Are there Negative Effects of Fast Curing light?

Fast curing has been accused of putting too much stress on the bond of a restoration to the tooth. If you apply too much light to a restorative material, it will presumably shrink more quickly, opening gaps at the tooth-restoration interface, causing white lines and microleakage. High power has also been accused of inducing cracks in thin porcelain veneers. To test these issues, we performed Class I & II microleakage studies, plus one with porcelain veneers:

Class I White Lines and Microleakage
Eleven different curing protocols using five different lights and four different restorative materials were investigated as to whether any variables could be isolated to predict the incidence of white lines at the margins and/or microleakage. We found that, while there is a general association between white lines and microleakage, it is not consistent across composite materials and curing protocols. In other words, there are too many other variables to merely conclude that if you eliminate the white lines, you will also eliminate microleakage.

Class II Microleakage
The same 11 different curing protocols and five different lights were used as in the Class I study, but with this project, we used three different flowables on the gingival wall and investigated as to whether any variables could be isolated to predict the incidence of microleakage. We found that neither the curing light nor the curing protocol produced any statistically significant differences in microleakage.

Veneer Crazing and Microleakage
Porcelain veneers, standardized to 0.7mm in thickness, were bonded to teeth using either a halogen light for 60 seconds or a plasma arc light for 15 or 30 seconds. The results showed no craze lines in any veneers when viewed under the stereomicroscope at 10x, both before and after thermocycling and staining. In addition, with margins at the CEJ, all the microleakage scores were very low, signifying no differences between the lights.

Components
Base Portalbe Dental Unit/Battery Charger Typically sits on the counter in the treatment room and includes the electronics that operate the light. For cordless LEDs, its function may be as the recharger. It may have the timer, some type of holder for the gun or wand, and the power switch (unless it is functioning as a battery charger, in which case it would not have a power switch since it would always be “on”).

Since counter space in treatment rooms is usually at a premium, the smaller base units are favored. Timers should be easily seen and accessible for changing. The gun or wand holder should keep these items secure, but allow easy placement and retrieval at the same time. Built-in radiometers are also featured in many base units.

Gun Houses the light bulb (in almost all halogen types), fan (in most halogens and some LEDs), trigger, and portal for the tips. A gun should be comfortable to hold. Even though most are not excessively heavy, some assistants may not be able to take the gun from you with their “pinky” finger, so instrument transfer can be difficult. Some guns still get very warm (even downright hard-to-handle hot) when they are activated for more than a minute or two.

To try to compensate for this heat generation, most halogen lights have extra powerful and sometimes noisy fans. Some lights even cut off after a certain period for cooling. In addition, some of the fans blow hot air into your face and/or make the immediate treatment area uncomfortably hot.

CAUTION
Never turn off a dental curing light while the fan is still running – it will overheat. Always allow the fan to cool the light. Once the fan stops running, the light can safely be turned off.

Many LED guns also include the timer, battery charge indicator, curing mode adjustment button, and other controls. For most models, these controls are located on the top of the gun so they can viewed by both right-handed and left -handed operators. However, in some instances, the controls are located on the side of the handle visible only to right-handed operators. These lights would not be a good choice for the left-handed minority.

Wand Typical pencil-thin wands were usually found with argon lasers and the original plasma arcs, but these types were corded. The cordless wands of LED lights have more bulk, but are still slimmer and lighter than the guns. Their activation mechanism using a pen grasp, however, may be somewhat awkward, especially if you are used to the triggers on guns.

Tips The power emitted from the face of curing tips is typically highest in the center and decreases as you get closer to the edge. If you are curing a large restoration and you are depending on the edge of the tip to cure critical areas like a veneer margin, you may be unknowingly undercuring.

For example, the mesiodistal width of a MOD preparation in a mandibular first molar may be 11mm. If you are using an 11mm tip, the power at its edges may not be strong enough to fully cure the marginal ridges. So, if you see fractures in these peripheral areas, it may be due to the restorative material not being cured properly to maximize its physical properties.

Using a tip too small could also cause brown lines at margins of veneers due to undercured resin cement. Large restorations would be better served in most instances by curing with a 13mm tip, which overlaps the restoration margins by several millimeters. However, the power output by a 13mm tip may be lower compared to smaller tips and may require longer curing times.

Multiple tips increase the versatility of a curing light and access to hard-to-reach areas. Four tips, all curved at roughly 60, should be sufficient fo
r the vast majority of procedures.

2mm is useful for tacking down indirect bonded restorations such as veneers, inlays, onlays, and crowns. Some 2mm tips can even fit into proximal boxes for curing closer to the gingival wall. Unfortunately, this may not be of much value unless you overlap the cure areas, taking as much or even more time than if you used a conventional tip and just extended the cure time.

8mm is for routine, small to moderate-sized restorations.

11mm is for moderate to large posterior restorations.

13mm is for veneers, onlays, and crowns.

The key in tip selection is to make sure that it actually extends beyond the outline of the entire restoration, so that multiple cures overlapping each other will not be necessary.

Note that the size of the tips as listed by the manufacturer is not necessarily the diameter of the light curing portion. For the most part, the diameter of tips as stated by the manufacturer is usually the external dimension. But this can be misleading on tips that have a protective covering that reduces their useable area by about 1mm.

Tips should swivel to allow positioning the light for maximal curing, but not be overly loose so they won’t stay in the intended position.

They should also be autoclavable for optimal sterility or adaptable for barrier use. It is especially important to keep the tips clean and free of adherents. Composite sticking to tips is a common problem. Any adherents will interfere with the light’s curing ability, so the face of the tip should be checked after each use. Be careful when cleaning the tips – they are easily scratched.

Protective Shields Most lights (but not all) come with different types of protective shields that fit over the end of the tip or mount on various locations of the tips. These shields are meant to protect our eyes from blue wavelength light being emitted by these devices. While these shields can be convenient and do not require any additional hands to hold them, they can also be cumbersome to use and difficult to switch from tip to tip. In addition, they are not universal in their protection.

For example, the larger shields may interfere with getting your light tip close to a second molar. In addition, they provide no protection when curing the linguals of anterior teeth. We recommend the use of handheld shields to protect your eyes from the light generated by these units.

Barriers Some of the wand-type lights come with plastic barriers, which is definitely the asepsis method of choice. These barriers can only be used with lights that do not have fans. Unfortunately, some barriers do not fit the lights very precisely and can be a nuisance if they move around excessively. On the other hand, barriers typically have minimal effect on the power output, but it is a good idea to get a radiometer reading with and without a barrier to be sure it is not going to interfere with curing effectiveness.

Batteries Lithium-ion (Li-ion) is the type powering most LEDs today, but some older models may still have Nickel Metal Hydride (NiMH). Lithium-ion are typically smaller or lighter, have a higher voltage, and hold a charge much longer, but they are more expensive than other types of batteries. NiMH are less expensive than Li-ion, but are larger, require “conditioning”, and suffer from the “memory effect”.

In some units, the batteries are easily removable and can be charged independently of the curing light. This means you will always have a fully charged battery ready to go. The batteries in other units are not removable and the entire wand or gun must be placed on the charger. This is not an issue if you are in the habit of always placing the light back on its charger, but could lead to your using a partially charged light. In addition, constantly charging a NiMH battery can damage it.

Simple Tips on How to Choose a Gearmotor Combination

{C}What is the typical power you need? In other words, what is a typical speed and torque operating point for your system? Choose a marathon micro motor that is capable of providing this much mechanical power. (Most motors are classified according to their power.) Usually you will choose the smallest, lightest, most inexpensive motor that meets your specifications. You may also have constraints on the nominal voltage of the motor (e.g., you have a 12V supply available, so you want the motor to run at around 12V). Since the input electrical power is the current times the voltage, low-voltage-rated motors of the same power draw larger amounts of current.
·{C}Once you have chosen a motor, choose a gearbox for the motor so that the speed+torque combinations you want from it (including the maximum speed and maximum torque you need) are under the speed-torque curve of the motor+gearbox combination. Also make sure the gearbox output shaft maximum torque specification is sufficient.
·{C}Motors should not be run for long periods of time at stall, as they are likely to overheat, as explained in Brushed DC Motor Theory. It is fine if they intermittently stall. The allowable continuous operation region of the speed-torque curve depends on the thermal characteristics of your motor, but typically you don't want continuous operation at less than 1/4 or 1/2 of the maximum speed of the motor. You may need to choose a larger micro motor to meet this specification.
·{C}You can further optimize your design for maximum efficiency in converting electrical power to mechanical power, to save on electrical power for battery-powered robots. Motors usually are most efficient at converting electrical power to mechanical power at high speeds. On the other hand, gearboxes with larger gear ratios generally have lower efficiency than gearboxes with smaller gear ratios. Don't worry about efficiency in converting electrical to mechanical power unless it is a critical issue for you.
Read more:
http://www.oyodental.com/

What should I consider when Chooseing equipment for my dental lab?

Dental laboratory equipment encompasses the full range of systems used for manufacturing fixed or removable dental prosthetics. Whether your lab is focused on using the latest digital dental technologies for highly efficient production or time-tested techniques for maximum esthetic appeal, these systems will be critical to your ability to fabricate dental restorations. Your equipment includes everything from the bench you work at and the utilities working in the background, to the systems and machines you need to complete the highly specific tasks that allow you to produce top quality dental restorations. Having the right equipment and having it in good working order is critical to your labs operations and success.
Hot Dental Equipment:

Dental Lab Vacuum Forming & Molding Equipment

Dental Lab JT® Wet Model Trimmer Abrasive Disc Wheel JT-19C

JT® Dental Lab Wax Heater and Knife 2 in 1 JT-50

With the first consideration of what types of restorations you want to create settled, it’s time to take a more specific look at the needs of your dental lab. Your investments need to not just fit in the lab, but be able to be set up in an ergonomic and useful manner, so be sure to look at the size and configuration of any system you are considering makes sense for your lab’s physical layout. Another important consideration is the company behind the systems you purchase. The more complicated a technology, the more important this service will be, so be sure you will have someone available to help keep you up and running once a piece of equipment is in your lab. Finally, when purchasing new equipment for your lab, inquire about routine maintenance that you should be performing to keep your new systems working in excellent condition. With this in mind, get your search going to find the right equipment for your dental lab.

Source: http://www.oyodental.com/What-should-I-consider-when-purchasing-equipment-for-my-dental-lab

Have you ever heard about the dental plan corporation?

For companies who may be facing the decision to cut dental insurance benefits, Dental Plan memberships might be a reasonable option that will keep their employees happy and healthy. By offering to pay the membership fee, it saves money on insurance premiums, and puts more financial responsibility on the patient. However, it still alleviates the need for the patient - the employee - to pay entirely out of pocket for the procedure.

A Dental Plan company is not a dental scaler  insurance company. Rather, it's an organizational plan that offers discounted services to members. Dental plans are companies that have pre-established relationships with providers of dental services, including family dentists, cosmetic dentists, oral surgeons, and orthodontists. Dentists provide dramatically decrease services in return for the facilitating dental plan company to direct patients to their practices.

For the consumer, a dental tools plan is a good alternative to dental insurance. In this economy, more and more companies are discontinuing portions of their benefit plans, and the first to go is often dental care. Instead, a consumer can pay a fee to belong to a Dental Plan, show their card at dental practices, and receive a discounted price. This is beneficial for individuals and families alike, as so many dental procedures are costly, but nonetheless absolutely necessary.

Dental Plan companies are an alternative to dental insurance. Consumers pay a membership fee to belong to an organization. In return, dental practices offer dental services at a discounted rate. Patients pay at the time of service, but sometimes far less than half of the average cost for the service.

Dental supply Plans

Dental Plans.com offers discount dental plans as a quality and affordable alternatice to dental insurance companies.

Dental Health Plans

Discount dental health plans allow dental services provided at a greatly reduced cost for the consumer.

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National Association of Dental Plans

Promoting network based dental plans to encourage membership to discount dental plans.

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Individual, Family, and Group discount dental plans for members to assure quality and affordable coverage.

It's pretty significant to resist these cravingsAbout 67 million American adults -- roughly one in three -- have high blood pressure, according to the U.S. Centers for Disease Control and Prevention, as do nearly 1 billion people worldwide. The condition puts people at risk for heart disease, kidney damage, strokes and vision loss, among other dental lab supplies health problems.

Villela and her team analyzed 44 seniors with an average age of 73, including 16 with normal blood pressure readings. All were initially given three pieces of French bread with varying amounts of salt on each. In that test, 68 percent of participants with high blood pressure preferred the bread with the highest concentration of salt, compared with 31 percent of those with normal blood pressure.

Fifteen days later, participants underwent a similar test, but this time other seasonings had been added to the salted bread. In that case, only 14 percent of patients with hypertension and none with normal blood pressure favored the bread with the highest salt content. Domenic Sica, president-elect of the American Society of Hypertension, said the findings may have been influenced by the limited number of patients involved.

"The concept of taste retraining in hypertensive patients, either young dental equipment r old, is at the foundation of this [research] and is studied in a creative manner," said Sica, a professor of internal medicine and nephrology at Virginia Commonwealth University, in Richmond. "How rapidly salt preference fell in this study is surprising, and may relate to the small number of subjects studied and a possible training effect."

Some previous studies have pointed to a genetic predisposition to craving salty foods, Villela said, and although there is no way of knowing who may have this predisposition, patients should know it is important to avoid salt despite the cravings. [In future research], it would be important to demonstrate that changes in habits can be maintained in the long term and the effect of these changes is reducing cardiovascular risk," she said.

High-salt diets have long been linked to high blood pressure, but new research finds that those with the condition may have a far greater preference for salty foods than those with normal blood pressure.

In a small study of older adults, researchers from the University of Sao Paulo in Brazil found that participants with high blood pressure, or hypertension, favored bread dusted with the highest concentration of salt more dental supplies than twice as much as those with normal blood pressure. Adding other seasonings to the salted bread, however, diminished the preference for salt across both groups.

The question remains: Are people with high blood pressure naturally drawn to salty foods, making them more prone to the condition?

"This is difficult to answer, but I believe that the genetic factor to salt appetite can be the beginning of the process," said study author Patricia Villela, a nutritionist and doctoral student at the university. "I was surprised by the fact that added seasonings may have changed the preference of the elderly, decreasing [their] appetite for salt."

The study was scheduled to be presented Wednesday at the annual meeting of the American Society of Hypertension, in San Francisco. Research presented at scientific conferences has typically not been peer-reviewed or published, and results are considered preliminary.

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The best ways of cutting oral health care costs

1. Buy the right insurance policy. To get a policy that meets your needs and budget, you’ll need to understand the differences between various insurance plans, such as Preferred Provider (endodontic motor), Health Maintenance Organizations (HMO), Health Savings Accounts (HSA) and Indemnity Insurance. For example, dental supplies an HMO has limited options for out-of-network care, but you’ll spend less in out-of-pocket expenses, and have lower co-pays and deductibles than with a PPO. In addition, with an HMO you won’t have to pay co-insurance when seeing your network’s physicians.

Lifescript and other sites have articles to help you understand not only the products, but also the terms used, such as premium, copayment, deductible, coinsurance, maximum out-of-pocket expenses, and lifetime coverage.

2. Look for subsidized clinics. If you can’t afford insurance, check if you or your children might qualify for state-supported assistance. If not, then look into Federally Qualified Health Centers in your area. At these government-funded centers, you pay what you can afford. They provide checkups when you’re well, treatment when you’re sick, pregnancy care, immunizations and checkups for children, dental care, prescription drugs, and mental health and substance abuse care.  Many communities also have free clinics; find out if there’s one in your area.

3. Take care of yourself and your family dental lab supplies. Cutting medical costs starts with doing all you can to stay healthy.

Maintain a normal weight as determined by your height and Body Mass Index (BMI).

Develop a regular exercise program, which might be a simple as a daily walk.

Don’t smoke, drink only in moderation, and refrain from illicit drugs.

Make sure your immunizations are up to date; have routine preventive care and age- and gender-appropriate medical tests.

Don’t rush to the doctor at the first sign of a cold, or a mild ankle sprain – use common sense. When in doubt, call your physician or use the toll-free number of your insurance company’s help line to speak directly with their clinician. But see a physician immediately if you have an issue that could be serious, including chest pain with exercise, slurred speech, unexplained rectal bleeding.

 If your insurance program or workplace offers wellness programs, see if they might benefit you.

4. Ask for generic drugs. Tell your doctor and pharmacist that you want to take generic medications if available, because they’re cheaper than brand-name drugs. Generics are regulated by the U.S. Food and Drug Administration (FDA) and have the same dose, strength, safety, route of administration and side effects. These drugs are cheaper because the generic manufacturers didn’t have to invest in the cost of developing, testing and marketing the medication.  They become available when the original patent expires.

5. Consider using a personal health record for yourself and your family. Theseallow you to better manage your health issues, leading to more cost-efficient care.

If you want to know more, welcome to click discount dental equipment on Labor’s Day!

Is teeth whitening harm to your health?

Teeth whitening is not for everyone. Before choosing to whiten your teeth it is important to see your dentist to determine if your teeth are suitable for the treatment. Teeth whitening is not recommended for everyone because of various issues relating to gum and tooth sensitivity, the natural colour of a person’s teeth and presence of fillings, crowns and veneers.

Unlike many untrained operators offering teeth whitening treatments, only dentists can assess a person’s suitability for the treatment. Without a proper assessment it is not possible to rule out any permanent side effects or other risks associated with the process.
If administered by untrained individuals, whitening procedures can cause discoloured teeth, heightened tooth sensitivity and gum problems.

When assessing your teeth for whitening, your dentist will:
Ensure your mouth is healthy before whitening commences - oyodental
Look for grey or yellow discolouration and diagnose the cause of any discolouration
Discuss with you the best method to whiten your teeth
Advise if there are factors which may influence the whitening process (e.g. antibiotic staining)
Assess whether your fillings, crowns and veneers need replacement (as these won’t change colour)
Identify areas of gum recession
Discuss possible tooth sensitivity and how it may be managed.
Teeth whitening should only be carried out on people who have their adult teeth, unless otherwise advised by a dentist.

Before you consider a teeth whitening treatment, review this
quick checklist:
Have you tried other ways to whiten your teeth without a chemical treatment, like having a professional scale and clean by your dentist and maintaining good oral hygiene habits?
Have you consulted your dentist and had your teeth assessed for suitability?
Has your dentist, in their professional opinion, recommended the treatment?
Are you aware of the side effects associated with tooth whitening?

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RS Electric Motors offers Marathon Electric Motors with confidence

RS Electric Motors offers marathon micro motor with confidence. Here's why...

Marathon motor company was named "Wisconsin Manufacturer
of the Year" for 1998. This award is based on criteria such as: Company Profitability, Commitment to Employees and Local Communities, and Effective Quality and Product Development. Marathon Electric's Corporate office and manufacturing facility in Wausau, Wisconsin, boasts of over 150 active employees with 25 or more years of service. Marathon Electric has been a leading manufacturer of motors and generators since 1913. That's 86 years of experience! Purchased in 1997 by Regal-Beloit Corporation, Marathon Electric has become an even more powerful force in the marketplace.

Marathon motors are truly "Motors for the long run!" Get the information on Marathon motors you need to make the right choice, at the right price.

    Select Marathon Motors Online Easy as 1-2-3...
    after you select the type of motor you need from the menu on the left.
      1. Click on a motor link
      2. Edit your list
      3. Send it to us
    We'll get back to you right away with the information you need; its that easy!

RS Electric brushless micro motor dental is the industrial motor company you can rely on for DC and AC motors, drives, and pumps. Service and repair of Marathon Electric Motors is also available. Get the information you need to make the right choice, at the right price.

Las causasy consecuencias de la respiración oral

Las causas de la respiración oral pueden ir desde alergias crónicas hasta el retroceso de la mandíbula que produce la excesiva succión del pulgar, pasando por hipertrofia de las amígdalas, pólipos nasales, desviación del tabique nasal, o constricción de vías respiratorias superiores… Entre otras.

Consecuencias

Las consecuencias son variadas, y tienen un peligro más que considerable. Pasemos a verlas:

Bajo rendimiento: tener una falta de oxígeno y otros factores hormonales hacen que los niños padezcan sobrepeso, cansancio y por ende, muestren un bajo rendimiento, tanto físico como estudiantil.
Apnea del sueño: la apnea del sueño se trata de un desorden del descanso, que causa interrupciones en la respiración, además de muchas consecuencias de carácter negativo como es la alta presión arterial, problemas cardiovasculares y fatiga.
Mal aliento, enfermedad periodontal y caries dental: respirar por la boca causa que tengamos una menor humedad en la cavidad oral, o que facilita el desarrollo de bacterias y afectación por caries, enfermedad periodontal e inclusive mal aliento.
Postura alterada del cuello, la cabeza y el cuello: respirar por la boca trae consigo una posición más avanzada de la cabeza, lo que se convierte en una sobrecarga de los músculos de la espalda y el cuello.
Sistema inmune debilitado: la falta de oxigeno que se presenta en las personas que roncan debilita el sistema inmune, además de interrumpir los ciclos del sueño e interfiere en el crecimiento de la producción de hormonas.
Deformidad en la mandíbula: si el problema de respiración oral afecta al niño, puede terminar alterándose la estructura facial, lo que causaría apiñamiento dental, así como maloclusión, además de una barbilla pequeña y la alteración de la posición de la cabeza. Estos problemas necesitarán tratamiento por parte de un dentista u ortodoncista.
En caso de que tu hijo sufra de esta problemática, tendrás que acudir con él al odontopediatra de las Clínicas Propdental, a fin de valorarle y determinar cual es el tratamiento que más le conviene. Si por contra eres tú mismo quien padece esta problemática, dirígete a tu dentista de confianza de Propdental,

Fuente: turbinas dentales‎  
             autoclave esterilizacion
 

How Does A Dental Ultrasonic Scaler Work?

The purpose of using best ultrasonic scaler is to facilitate the removal and elimination of agents which cause inflammation to the teeth, plaque and its products, as well as calculus. The term "calculus" is used to refer to a kind of dental plaque that has hardened over time. This condition is caused by the consistent accumulation of saliva on the plaque, and which may already be deposited on the teeth. With the rough surface providing a favorable environment for the increased formation of calculus, dental ultrasonic scalers make for a viable choice of equipment fit for use in eliminating this problem.

Scaling, when done professionally and thoroughly, ensures that the periodontium is free of harmful agents and disease. The periodontium is the mass of tissues which surround the teeth and provide support for the same. As a result of using these ultrasonic scalers effectively the teeth are maintained securely in the maxillary and mandibular bones, and which in turn helps to keep your teeth strong.

In performing its function the tip of the ultrasonic scalers vibrates following a pattern which depends on the power rating as well as the type. The water gets energy in the process of passing over the tip in order to provide cavitations and thus create an action similar to that of scouring.

Dental ultrasonic scalers work rapidly during the removal of calculus from the surfaces of the teeth. They do this via vibration actions ranging between twenty thousand and forty five thousand times per second. Most of the power, and consequently heat, for this device is focused at the tip, and which is effectively cooled using a jet of water. It is thus important to keep the scaling tip in motion over the teeth because of the heat that it generates. www.oyodental.com, as well as other professionals in the field, advises that no more than ten seconds should be spent on the same tooth. In addition to this, only a single ounce of pressure needs to be used. It is obviously important to provide and follow the stipulated guidelines and especially when it comes to people's health. For this reason, this procedure should only be carried out by professional dentists as any errors may even result in patients losing their teeth.

As a dental health professional looking for dental ultrasonic scaler, there is a wide variety of these available in the market, each with its benefits and drawbacks. They are available in different shapes, with some actually having interchangeable tips and thus providing added effectiveness at a lower price, this compared to a situation whereby you have to buy different devices for the different tips. There are also new variants which are able to carry their own supply of water. As a general rule though, finer action is experienced from devices with thinner tips.

Source:
http://www.oyodental.com/How-Does-A-Dental-Ultrasonic-Scaler-Work

How does a brushless electric dental micromotor work?

The article how does a brushless electric dental micro motor work? explains how brushed motors work. In a typical DC motor, there are permanent magnets on the outside and a spinning armature on the inside. The permanent magnets are stationary, so they are called the stator. The armature rotates, so it is called the rotor.
The armature contains an electromagnet. When you run electricity into this electromagnet, it creates a magnetic field in the armature that attracts and repels the magnets in the stator. So the armature spins through 180 degrees. To keep it spinning, you have to change the poles of the electromagnet. The brushes handle this change in polarity. They make contact with two spinning electrodes attached to the armature and flip the magnetic polarity of the electromagnet as it spins.
This setup works and is simple and cheap to manufacture, but it has a lot of problems:
The brushes eventually wear out.
Because the brushes are making/breaking connections, you get sparking and electrical noise.
The brushes limit the maximum speed of the motor.
Having the electromagnet in the center of the motor makes it harder to cool.
The use of brushes puts a limit on how many poles the armature can have.
With the advent of cheap computers and power transistors, it became possible to “turn the motor inside out” and eliminate the brushes. In a brushless DC motor (BLDC), you put the permanent magnets on the rotor and you move the electromagnets to the stator. Then you use a computer (connected to high-power transistors) to charge up the electromagnets as the shaft turns. This system has all sorts of advantages:
Because a computer controls the motor instead of mechanical brushes, it’s more precise. The computer can also factor the speed of the motor into the equation. This makes brushless motors more efficient.
There is no sparking and much less electrical noise.
There are no brushes to wear out.
With the electromagnets on the stator, they are very easy to cool.
You can have a lot of electromagnets on the stator for more precise control.
The only disadvantage of a brushless motor is its higher initial cost, but you can often recover that cost through the greater efficiency over the life of the motor.
For more information on brushless micro motor, check out the next page.
Source:http://www.oyodental.com/blog/2016/02/06/how-does-a-brushless-electric-dental-micromotor-work/

Several considerations When selecting dental air compressor

Sizing your compressor
To properly size a compressor, you need to know your air consumption and the capacity of the compressor. Consumption is usually determined by how many operatories are in use at a time. Capacity is the compressor output in cubic feet per minute (cfm), and can usually be found in product literature. As a rule of thumb, each chair needs approximately 2 cfm.

Dental compressor suppliers often simplify all this and just tell how many users a compressor will support. This is helpful, but you must check the duty cycle and actual flow to ensure you’re getting what you expect. Product literature may state pump displacement but not true capacity, which is a combination of actual volume output, duty cycle, and tank size.

Capacity and reliability are related because many compressors are designed with a limited “duty cycle” — the percentage of time a compressor can run without cooling off. For example, some dental compressors have a 30% duty cycle. This does not mean it can run three hours straight in a 10-hour day, but more like 18 minutes in an hour.

The key point is that two compressors may put out the same cfm, but the one with the lower duty cycle cannot run as much without reducing its service life. Duty cycle varies widely among compressors, so ask your supplier about it.

Air quality
Compressed air quality depends on the inlet air and what the compressor adds to it. Both oil-less and lubricated compressors are used in dentistry. Both require particulate filters to remove any airborne dirt and dust. With a lubricated compressor, the system must also include reliable coalescing filters to ensure patient safety.

Most dental compressor for sale include a dryer to remove moisture. The common types are desiccant and membrane. Both types use air to purge the saturated desiccant material or membranes. This reduces the air available chairside. When selecting, consider how much dried, compressed air is needed for the purge.

Sometimes, less is more
Dental compressors have “heads,” with each one housing one or more pistons. Some models employ a single head, while others use a multihead design. A common misunderstanding is that a machine with multiple heads has built-in backup. When a multihead compressor has a malfunctioning pump, it may not be able to continue running on another head.

Assuming equal quality in two machines, the machine with more moving parts has a greater chance of failure. Single-head machines, by necessity, are generally designed for longer life. They are designed for higher efficiency and greater duty cycle to take on a constant, more demanding workload that many multihead units simply cannot handle.

Not all compressors are created equal
Manufacturers make choices in design and materials to meet target price points, so quality varies widely. Following are some points to consider when comparing compressors.

Heads should be made of quality materials and designed to remove heat. Finned cylinders, large cooling fans, and filters are important features. Components should be designed to be serviced, not replaced. For example, antifriction coatings like Teflon are widely used to reduce piston wear.

Eventually, the coating wears off and the whole piston must be replaced. An alternative method is using replaceable Teflon guide sleeves and compression rings. These may last for years, and replacing them is simple and less expensive than installing an entire new piston or head assembly.

Other signs of quality include robust tubing and fittings, as well as good vibration isolation to prevent loose wires and fittings. With respect to safety, electrical connections should be neat and touch-proof. In addition, compressors used in dental offices should be clearly marked with full UL certification. Another safety item is the storage tank, which should be ASME certified.

See more:oyodental

La influencia de los alimentos en nuestra sonrisa

Alimentos buenos para la salud oral

Las elecciones que debemos hacer si queremos tener una buena salud bucodental pasan por el consumo de lácteos como la leche, el queso, el yogurt… Esto es debido a que la presencia de calcio en estos alimentos hace que nuestra dentadura se refuerce. Las aves de corral, otras carnes y los frutos secos también nos ayudan a aportarnos el fósforo necesario para conseguir proteger el esmalte de nuestra dentadura mediante el proceso de remineralización.

Los alimentos que cuentan con un alto contenido en agua también serán buenos para nosotros, ya no sólo para estimular la saliva, sino para diluir los azúcares: las manzanas, las peras o las verduras son algunos ejemplos. Si hablamos de bebidas, siempre será el agua nuestro líquido de elección, junto con la leche.

Alimentos dañinos para la salud oral

Existe una larga, muy larga lista de alimentos dañinos para nuestra dentadura, por lo que sólo nombraremos los más representativos: chucherías, galletas, así como las patatas fritas o los pasteles son algunos de los más perjudiciales. Esto es debido a que no sólo contienen un alto porcentaje de azúcar, sino que además son pegajosas, lo que hace que se enganchen a nuestra dentadura, facilitando enormemente el entorno propicio para las bacterias. Naturalmente esto no quiere decir que se tengan que eliminar por completo de la dieta, pero sí deberemos reducir el consumo o tratar de emplear medidas preventivas para que su efecto no sea tan negativo. Por ejemplo, usar una cañita para beber los refrescos es una buena opción.

Como vemos, los alimentos pegajosos y azucarados son los peores enemigos de una dentadura sana. Si los limitamos y nos decantamos por aquellos que presenten mayores beneficios para nuestros dientes estaremos haciéndole un enorme favor a la salud de nuestra sonrisa, lo cual irá acompañado de una mejoría en nuestra estética. Si tienes más información, consúltale a tu dentista de confianza de Propdental durante la próxima visita rutinaria.

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 autoclave esterilizacion

Woodpecker DTE D7 Ultraschall Spécifications du fabricant

Zahnsteinentferner Ultraschall Produktdetails:

1. abnehmbares, steriliesierbares Handstück

2. scaling, perio, endo

3. 2 facher Wasser anschluss: automatischer Wasser anschluss und Wasser anschluss von außen

Computer steuerbar

4. Inkl. Ansatz Spitzen und Spitzenhalter



Technische Details:

Power Input: 100V-240V~50Hz/60Hz 1.2A (max)

Main Unit Input: 30VDC 1.3A

Output primary tip vibration excursion≤100μm

Tipp vibration Frequency: 28kHz±3kHz

Output half-excursion force<2N

Output Power: 3W~20W

Main unit fuse: 250VT 1.6AL

Adapter fuse: 250VT 2.0AL

Water Pressure: 0.1bar to 5bar (0.01MPa~0.5MPa)

Main Unit Weight: 1.35kg

Adapter Weight: 0.3kg

Dimension: 237mm*206mm*95mm

Siehe Details:http://www.oyodental.de/

How to Choose The Proper Electric Toothbrushe

What is the best electric toothbrush out there? Why should you buy an electric toothbrush in the first place? Well let’s start with why you should be using an electric toothbrush. One of the biggest reasons to use an electric toothbrush is that these toothbrushes do the best job of cleaning your teeth and gums. They get in between your teeth, removing plaque and debris. They also gently massage your gums, promoting good tooth and gum health. In addition, electric brushes also save you a lot of time when brushing your teeth. Dentists recommend that you brush your teeth at least two minutes per brushing, but this is often not enough to completely clean. With an electric toothbrush, you are sure to get clean in the amount of time.(ultrasonic scaler)

While these are important factors when choosing the best electric toothbrush, it is also important to choose the right head itself. You have many to choose from, but the basic heads are soft, medium, and hard bristle heads. People with sensitive teeth and gums, as well as children should start off with a soft bristle head, because they are going to be gentle, but still do a quite effective job. They also make heads for whitening your teeth, as well as deep cleaning. It is important to check the brand of toothbrush to make sure which replacement heads are available.

You may have the best electric toothbrush in the world, one that is expensive, and has all the bells and whistles, but in the end, if you can’t work it, then it’s just an expensive and fancy paperweight. So really the bottom line is find a toothbrush that will be the easiest for you and your family to use, and use regularly. You should choose a toothbrush where the heads are interchangeable, so you don’t have to buy a base for everyone in the family. The heads should be color coded so you know who’s brush head is who’s. While some people may want to just have healthy teeth, there are people who don’t like the look of their smile, maybe they smoke or drink coffee, so a good toothbrush product should be able to accommodate these types of heads as well.

One thing for sure is that you need to really check around for the right price and the features you need. Make sure you find a product that you are going to be comfortable with for a long time. It is also important that they offer replacement heads at a reasonable cost.

Related goods:(teeth whitening machine)

 

Simple Methods to Make Teeth Whiter

You can get whiter teeth without spending too much time or money. This article contains many tips and tricks to ensure that you successfully whiten your teeth.

Fresh cut lemons are great for whiter teeth. Rub the lemon peel onto your teeth every day for a whiter smile. Lemon peels will give you white teeth without the harshness of chemicals.

You need to be very careful when eating or drinking after having a whitening of the teeth procedure done. Teeth absorb stains more easily after they have been whitened. It is important to avoid dark colored foods and drinks after your newly whitened teeth. Coffee is an example of something that can be absorbed by your teeth.

Eat raw veggies and fruits or vegetables if you want to see whiter teeth. Stay away from these kinds of food to ensure your teeth are healthy teeth. You should also avoid snacking on an ongoing basis if you want to keep your teeth to be white.

Whitening Products - dental led whitening machine

Read the directions on any whitening products completely before starting treatment. This can irritate your gums and damage your teeth. Do not use whitening products designed to whiten your teeth.

While mouthwashes are great at fighting bacteria, they can also result in discoloration of your teeth. To avoid discoloring your teeth, pick a brand that is gentle and does not have bright coloring.

This helps you fight plaque buildup so your teeth do not become discolored.

It also can make them very sensitive teeth that are more susceptible to staining.

Red Wine

Red wine has a very negative effect on teeth look. The deep hues of red wine color is absorbed into the teeth’s enamel and discolor them. The only way to permanently stop this is by reducing the amount of red wine completely.

Talk to a tooth whitening process. Do not whiten your teeth after getting checked for cavities or any dental work.

If the shade of your smile bothers you, the first thing you should do is speak to your dentist about all available options. Some feel that it’s wasteful to spend money on teeth whitening, but if it is affecting the quality of your life, it may be worth it because it could build up your self-confidence.

Drinking water after dark beverages can keep your teeth. A glass of water taken after drinking coffee or tea will keep their stain-causing agents from remaining on your teeth long enough to do any damage. You can also try drinking those dark drinks from a straw.

Twice a day, you should be brushing, floss, and massaging your gums. The most reliable way to ensure your teeth are white is to simply brush and floss every time you eat or drink anything. This ensures removal of food residue and plaque that builds up and cause any damage.

Brush your teeth upon waking up, and as soon as you want to go to bed to see your teeth get whiter.

You will enjoy life more with a bright, white, dazzling smile. You will be glowing with self-confidence and a bright smile without even knowing it. Start implementing these tips and hints to get bright, white teeth and the smile you always dreamed of having.

Looking for more dental equipment at oyodental.com

Mobile Zahnarzt Behandlungseinheit Spécifications du fabricant

Mobile Dentaleinheit | Mobile Zahnarzt Behandlungseinheit 

Produktsdetails:

1. 3 Handstück automatische Steuerung

2. Einzeln-Handstück Kühlmittel System..

3. Handstück Spülsystem

4. Aseptische Handstückschläuche

5. 3-Weg-Luft / Wasser-Spritze, Nass / Trocken- Fußschalter, Meister Ein/Aus-Schalter

6. Duplex Steckdose, Feststoffe Sammler

7. Anschlussdose mit Ventilen, Filter & Regler

Technische Details:

1. Hydraulischer Druck:0.3MPa

2. Luftdruck: 0.35MPa

3. Eingangsleistung: 0.8MPa

4. Ausgangsleistung: 0.5MPa

5. Abmessung: 85 x 70 x 65 cm

6. Gewicht:26kg 

Mehr sehen:http://www.oyodental.de/

Simple and Useful User Manual of Dental Lab Vacuum Forming Machine

Here is the Manuel for one of dental lab equipment, Vacuum Forming & Molding Machine. 

1. The Main Function

The products are mainly applied to plastic molding manufacture, safe and reliable diaphragm, hospitals, clinics, is necessary dental equipments. The machine will with stand years of rigorous use. 

 

a) Heavy-duty vacuum motor provides precise downward suction.

 

b) Power: 1000w

 

c) Weight: About 6kg.

 

2. Vacuum Forming Machine Instructions

 

1) First, both sides will be forming slice protective tear.

 

2) Then, the shaping pieces and place in molding clamping, lifting and heating. Will fix good model machines on the plate.

 

3) If the model is too high, in the model, the convenient take on the steel ring when diaphragm is caused by model pull liter damage

 

4) The machine will open outward heater heating switches, preheated. About 3 minutes.

 

5) The heater to preheating after turn head, waiting for molding slice shape piece prolepses (heat to sag) 1 centimeter or so. The deeper depression, maintain (will be more thin).

 

6) The bars will go down in shaping slice completely cover the model, close heating switches, open vacuum switch.

 

7) After switch button suction pump air time for 5 seconds. Remove diaphragm, heater cool down after it.

 

8) With scissors will spare trimming, or direct transport needle under the drain flange 3mm 2 ~ the grinding, dressing edge, retain gum margins under 0.5 mm.

 

9) Braces clip is completed, will put braces, again, check whether the model. So keep it made with TMJD, if feel edge is not closed, can use alcohol lamp baking, bent inwards, until closed.

 

3. Attention

 

 When heated, the heater to head to prevent the diaphragm heating outward.

 

 Please turn off the heat when vacuum switch, in order to prevent the diaphragm

 

 Please put the vacuum forming on the bench in place, prevent caused by uneven workbench the diaphragm is uneven.

 

 Please keep the working environment clean and tidy, this equipment is mandatory absorb, shall ensure that the bottom and prevent dirt and ventilation equipment, entering the internal equipment can not work normally.

 

We can offer many Manuels for our Vacuum Forming Machine, welcome to ask for it.

Some Notice For Dental Ultrasonic Scaler DUS-2A

We think Notice for DUS-2A dental ultrasonic scaler is also so important, please pay attention to this!


1 OPERATION NOTICE
a) Autoclave Sterilization is recommended
b) Autoclave Sterilization required first time you use and after each patient as noted below. Take handpiece out of packing bag before sterilization. ONLY Tip, Endo Wrench can be autoclaved under the high temperature and pressure.
c) Please release the scaler tip while pushing the foot pedal.
d) The scaler tip should be firmly tightly and has water output from it
e) The scaler tips should be replaced when it is over wear.
f) Please do not bend or polish the scaler tip
g) Please use pure water for our Ultrasonic scaler
h) If use water bottle to contain pure water, the water bottle should higher than patient’s head for over 1 meter at least.
i) Before install the handpiece, please ensure the cable connector side and cable socket side dry enough.
j) Please do not Pull on the tail line during the operation process in order to avoid the handpiece depart from the connector of cable.
k) Please do not beat or polish the handpiece
l) After the machine finished operation, please turn off the power and then pull out the adapter.
m) Our company is a professional manufacturer for medical devices, we are responsible for all the machines repair and modify as well as spare part replacement.
n) Other factory produced scaler tip may cause the damage of our ultrasonic scaler, please use scaler tip according to DENJOY scaler tip
o) Our machine only accept the power adapter provided by DENJOY DENTAL.

2 CONTRAINDICATION

a) Hemophilia patients can’t use the machine
b) When there is a patient or doctor who is now using the cardiac pacemaker, is forbidden to use this machine
c) The cardiac pacemaker sufferer, pregnancy. the serious cardiac pulse abnormality sufferer and children is forbidden to use this machine.

3 STORAGE AND MAINTENANCE

a) Please handle with care to our ultrasonic scaler, store it at dry environment.
b) Please don’t Storage with toxic, corrosive, flammable, explosive products
c) Environment storage should be not over humidity 80%,atmospheric pressure is 50 kpa-106 kpa, temperature -10 ℃〜+50℃.
d) When the machine is not in use, please turn off the power and pull the power socket, if not use the machine for long period, please charge and use the machine with water at least once each month, each type for 5 minutes at least.
e) Working life span of our machine is 5 years after machine leave our factory.

4 TRANSPORTATION

a) Please avoid too much Shock and vibration, handle with care and avoid inversion during the transportation
b) Do not ship together with dangerous product.
c) Keep away from moist

Marathon Micro Moteur S10 avec pièce à main 35000 RPM

Marathon S10 35000 RPM Micro Moteur avec pièce à main

 

Caractéristiques:


1.    Le S10 micro moteur dental est composé de la boîte de contrôle, le pédale de pied et la pièce à main.
2.    Type: SJK S10
3.    Très haute puissance et bonne qualité, fabriqué en Corée du sud par SAEYANG.
4.    Virture du produit : méthode exchange d’outil de CAM.
5.    Non vitesse d’étape (il est bien conçu pour la sortie de 0-35 000 rpm).
6.    Capacité de rotater à gauche ou à droit.
7.    Pédale de pied ON / OFF, et il peut aussi contrôler la vitesse de rotation.

4 Simple Steps to lubricate dental low speed handpiece

Lubrication of the dental delivery unit’s hand pieces is necessary to keep them in good working condition. The procedure described below takes only a few minutes per day and should be done in order to avoid overheating of the dental low speed handpiece, which is not covered by the warranty. Oil in either a bottle or in a spray format can be used.

Step 5

Re-assemble and operate the handpiece for 10 seconds, then wipe clean the excess oil on the exterior of the dental handpiece. After these steps, it is ready to use.

A simple Introduction of teeth whitening

Currently, cosmetic teeth whitening or teeth bleaching is performed, either in a dental office or by an independent entrepreneur, by placing a peroxide-based bleaching gel into direct contact with the dental hard tissues. This contact of bleach to teeth is facilitated either by painting the gel directly onto the teeth or by use of a custom made whitening tray loaded with bleaching gel that is placed into the mouth to carry the gel and keep it held in constant contact with the outer surface of the teeth. It has been shown that these two methods will result in noticeable whitening of the teeth, with the finished degree of whitening being based on both the relative strength and concentration of the peroxide-based gel and the amount of time that the active gel is left in contact with the surface of the teeth. If the concentration was low, a longer amount of time of contact with the bleach was needed to achieve a satisfactory result. This meant that for the patient a number of daily treatments were needed either in the dental office or at the patient’s home for the teeth to become satisfactorily white.

Making the bleach concentration stronger, on the other hand, would speed the color change, but would often lead to increasingly painful tooth sensitivity, which was a very non-desirable result for both the patient and practitioner. So, experience showed that a good result could be obtained at home if the patient used either a medium peroxide concentration of bleaching gel coupled with a regimen of spacing the treatments into an hour per day for a number days to a week, or to all-night bleaching with a low peroxide concentration gel every night for a 7-21 day course of treatment. These two variations of the teeth bleaching processes have been used for many years with a good and predictable outcome for the patient who actually correctly completes the treatment regimen.

The only downside was that results were not immediately obtained, but were gained incrementally over a number of days or weeks. Since this type of treatment was done unsupervised at home, strict compliance with treatment guidelines was many times hard, if not impossible to maintain, and results and patient satisfaction with the treatment were many times negative.

Therefore, many a practitioner hoped for a way that could combine the shortest course of treatment, coupled with the ability to be able to supervise the entire treatment to a satisfactory conclusion, that was both easy and pain free from sensitivity to the patient.

This hope resulted in what is now known as Chairside Power Bleaching, the system used by SmileLABS™. By combining a higher concentration of peroxide gel with the use of a strong, safe wavelength of light as an accelerator or catalyst to the teeth bleaching reaction, a much shorter time of contact between gel and tooth resulted that increased the bleaching efficiency of the gel and shortened treatment time by a very large factor, while keeping the process mostly free from sensitivity and achieved the patient’s desire of whiter teeth in minutes instead of days. The question is now whether that combination of gel and light really works.

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teeth whitening machine

What Is The Procedure of Dental Sealants?

What Are Dental Sealants?

Dental sealants (also called fissure sealants) are a plastic coating which is placed on the surface of the molar teeth.  Dental sealants are usually placed on the biting surface, but they may sometimes be needed on the cheek or tongue side of the teeth if there are pits there.

Why Should My Child Have Dental Sealants?

Dental sealants are placed to prevent food and plaque from getting stuck in the pits and fissures of the teeth and causing decay.  The grooves of the teeth are difficult to clean and are susceptible to decay.  The material used in dental sealants is flowed into these pits and fissures creating a smoother surface, which is easier to clean with a toothbrush.  Dental sealants reduce the risk of decay and needing fillings by putting a barrier between the surface of the teeth and the plaque.  Some sealants also have fluoride in them which helps to strengthen the teeth.

What Age Should Dental Sealants Be Placed?

Dental SealantsDental sealants should be placed soon after the teeth come through.  Once the new teeth are completely through the gums, this is the best time to have the sealants placed.  They are generally placed during 6 ad 14 years of age.  During routine dental visits, your dentist will advise you on when and if dental sealants should be placed.

How Long Do Dental Sealants Last?

Dental sealants can last up to 10 years.  The sealants can chip or wear away.  The sealants can be repaired or replaced if required.  Your dentist will check your sealants at your regular 6 month checkup appointment.

What Is The Procedure For Placing Dental Sealants?

Applying a dental sealant is a quick and painless procedure.  The teeth are thoroughly cleaned and dried.  The sealant material is then placed on the teeth and it is set with a Led curing light.

Related Article:Is The Dental Curing Light Dangerous Or Harmful To Look At?