Thursday 26 December 2019

Tips for Choosing Mobile Dental Unit with Air Compressor

Portable dental equipment options are available from a variety of dental equipment companies. These companies range from larger multi-product businesses to smaller companies whose only product may be an item of portable dental equipment. Several manufacturers will have a variety of portable equipment options. Many companies have been selling and re-engineering their products for many years, while others may have just recently entered the portable dental marketplace.

Starting your own dental practice is no easy task. Purchasing portable dental equipment for your practice can also be difficult. On average, a new dental practice will spend around $200,000 on structural upfit, equipment and supplies for their business. To make sure you are getting the most for your money, consider the following tips before diving into the world of dental equipment sales.
Do your research
Before making any final decisions and purchasing dental equipment for sale, do as much research as possible on your own first. Doing so will help you understand all that the market has to offer and what your options are.

It is never a good rule of thumb to buy something simply because it is available or because it is affordable for you. Find out exactly what your practice needs and then begin your research on the quality products to invest in. This is because buying portable dental equipment is just that, an investment. Check the product’s features and confirm how it will make your practice more effective.

Find a reputable Brand
As good as a deal that company you don’t recognize or haven’t seen any reviews on may offer, do not buy from them unless you are sure the decision is right for you.
Choose a manufacturer who has an established reputation and has been in business for a number of years. These companies have the knowledge and experience to help recommend the best products. This also benefits you because they know exactly how each product functions and how it benefits the different dental practices.

Choose quality first
With so many different models and manufacturers to choose from, you want to make sure you’re investing in something of quality that is best for your practice. While some products may do the same function, some perform and last better than others simply because of how they were made.

Although “top of the line” dental chairs may cost between $5,000 to $7,000, you may benefit more from buying a used dental chair instead. This is because many used and portable dental chairs are made of more durable materials than many of the mass-produced products on the market now.

Check with the equipment manufacturer regarding warranties, timeliness of repair, difficulty associated with performing minor repairs on site, and the availability of loaner units when necessary repairs are being done. Prior to purchase of a portable unit, ask the vendor for names of previous customers who have purchased a similar unit; contact these individuals to discuss the relative merits and problems of the unit.
Portable dental delivery unit makes it possible for clinicians to provide dental care to patients who are unable to travel to a traditional dental clinic. No ambulatory, homebound, and institutionalized patients benefit greatly when portable dental equipment is used to address their dental treatment needs on-site. Portable dental office equipment is also an option for small dental practices that plan to expand in the future. If you have any question when choosing portable dental unit, you can email us and we can help you determine which equipment is right for you and your practice.

Tips on Selecting the Suitable Dental Portable Unit for Dental Practice

At first it may seem daunting to try and choose between the various brands of self-contained portable dental turbine unit available. Prices can vary widely with some seemingly too good to be true to even higher priced units not always being clear on what and how well they work. The purpose of this article is to simplify the purchase decision and explain some of the mechanical features and what to look for when comparing different models of portable dental units for your office.
Look for these specific features when evaluating a portable dental unit for purchase for office use or portable dentistry:
Vibration – We will start our discussion with one of the most overlooked but important characteristics of evaluating a mobile dental delivery unit. An ideal system will have a powerful compressor and vacuum system, meaning the motors could generate significant vibration.
High Grade Compressor and Vacuum Pumps – Higher quality pumps are made with greater precision and the dynamic balancing of the motors and piston will make them run smoother. This smoother operation is the key to beginning with proper construction to eliminate vibration at its source.
Solid and Robust Construction Materials – Units that have poor construction or use flimsy materials will not handle vibration well and will cause problems. A well-built portable dental unit will be not only constructed of high-grade components, but will have thicker walls and materials. To keep these units lighter yet stronger they should use aluminum or an equivalent type of construction. Be cautious of units that are too small or lightweight to properly absorb vibration.
Suction Performance – One of the most difficult design areas for a mobile dental unit to create, is the powerful suction desired for dental procedures. It needs to provide high flow with moderate strength to pick up debris, capture water coolant effectively and pull viscous solutions through smaller tubings like the saliva ejector or surgical tips.
Suction Canister and Purging Ability – The suction canister should be sized to allow for a standard day of procedures with normal rinsing during treatment. Generally, a good baseline is that the canister should hold around two to three liters of liquid.
Sound Performance – A very common and important question when selecting a portable dental unit for an office is how loud is it? The reason is that many in the dental field have heard how loud inexpensive and poorly designed dental units with air compressors can be. A well-engineered portable dental system should be very quiet and operate under 48 decibels measured right next to the system.
Compressed Air and Headpiece Performance – When evaluating a portable dental unit with compressor, make sure that the internal air compressor provided can produce enough air flow at the right pressure to operate air driven dental turbine headpieces properly. Even electrical dental high speeds use air for cooling and need proper air flow.
Dental Water Supply and Water Line Disinfection – Current requirements are mandating that the water lines in dental delivery units be disinfected to remove the biofilm that can grow inside the small diameter tubings. Tablets and other chemicals can clog or damage portable dental unit components and require consistent management to ensure that the removal of biofilm is obtained.
Amalgam Separation – If you will be using the portable dental unit for restorative procedures such as removing old amalgam fillings, the suction system will need the ability to use an amalgam separator.
We are offering a wide range of high quality portable dental equipment including portable dental chair, dental turbine unit, mobile dental delivery unit and portable folding dental chair. All products are widely demanded by the clients as these are constructed using quality material. If you are interested in our product, you can visit our site:

Thursday 28 June 2018

New study finds troubling rates of dental implant complications

The study evaluated rates of dental implant loss and peri-implantitis as the result of dental implants.

Any dental procedure comes with the chance of infection, but a recent study out of Sweden has discovered that patients with dental implants run a high risk – and that several contributing factors can exacerbate this risk.

The research out of the University of Gothenburg aimed to evaluate the correlation between dental implants, implant loss and peri-implantitis, a destructive infection that affects the tissue surrounding dental implants and can result in loss of supporting jawbone. Researchers also explored the relationship between periodontitis and rates of implant loss.
The study consisted of 4,716 randomly selected participants that had all had dental implants in 2003-2004. Researchers sent out a survey and received dental records and charts for 2,765 patients in the study. 596 patients were also examined at a nine-year follow-up appointment. The results found that almost eight percent of patients with dental implants experienced the loss of at least one implant within that timeframe.

More research on dental implants with dental implant motor: New discovery can prevent dental implant infections
“Altogether, 7.6 percent of patients had lost at least one implant and 14.5 percent had developed peri-implantitis with pronounced bone loss,” reported Dr. Jan Derks, a researcher at Sahlgrenska Academy. 50 percent of patients presented with some signs of peri-implantitis, but only 14.5% were considered to have moderate to severe implications (equating to a crestal bone loss exceeding 2 mm). The 7.6 percent that had lost an implant showed an average loss of 29 percent of bone support.

Dr. Derks’ research also found that patients with preexisting periodontitis experienced an increased risk of peri-implantitis. Smoking was also identified as a risk factor contributing to early implant loss. The study also reported that “progression of peri-implantitis occurred in a non-linear, accelerating pattern, and, in the majority of cases, the onset of the disease had occurred early.”

More emerging research: Study finds protein can inhibit bone loss from periodontitis
Interestingly, the rate of implant failure did not differ between the general practice and specialty practices. “22% of all patients in the present sample received their implants in a general practice setting, and implant los in this subgroup was not different from outcomes in patients treated in specialist clinics,” the study stated.

“Peri-implantitis appears to develop within a few years and then progresses quickly at an accelerating pace,” said Dr. Derks. He hopes that the information gained from the study can help dentists minimize the risk of peri-implantitis and implant loss.

Friday 22 June 2018

The problems following a titanium dental implant

Over the course of this year I have been having a dental implant installed. When I look back over my medical diary, I can see that about 3 days after every part of the procedure I've started to feel generally unwell - like flu without the fever. It seems to last about 4 weeks then pass off.
The problems following a titanium dental implant

On 26 September I had the final part of the procedure, the permanent crown. Since then I've been feeling especially rubbish. To the extent that I'm only really functioning with the help of steroids (15mg/day seems to be the minimum required) and paracetamol. No fever, so not an infection.

I learn that there can be serious allergic issues with titanium (despite what dentists say), and particularly in autoimmune patients (oh goodee!). Which could be what's going on here and if so, that'll be a right pain in the whatsit as I guess the only solution would be to remove the implant and insert a bridge instead. No doubt at my (very great) expense.

BUT - is it that? In April this year I had the temporary crown replaced - with anaesthetic, but involving no new materials in my mouth (that I'm aware of) and had a similar, if milder, reaction then. Also, when I had the titanium dental implant surgically inserted, again I only had a milder version of my current symptoms. The final part of the procedure on 26/9 didn't involve anaesthetic or surgery or, again as far as I'm aware, any new materials in my mouth, yet I'm feeling much worse this time.

Has anyone else experienced similar problems? And did they resolve in time or did you have to take more drastic action?

Friday 19 May 2017

Power Scaling Inserts and Tips You Should Know

It’s unlikely that either Irene Newman or Alfred Fones could have envisioned removing stain, calculus, or biofilm with a power-driven scaler.1,2 Hand scalers and porte polishers were the standard of care in their day. Just 50 years after the birth of the profession, a new device, called a Cavitron, created a technology wave that added a new dimension to deposit removal.

Installing a piezo tip with a torque-limiting wrench.
Today’s ultrasonic landscape is heavily populated with information from companies that have both units, tips, and inserts as well as companies that sell after-market replacement tips and inserts. Internet sites are a rich source of information, and many companies such as Hu-Friedy and Satelec have valuable videos that demonstrate various scaling techniques with different tip designs.

A wide variety of tip designs are available for piezo electric ultrasonic dental scalers.
Scaling tips used in magnetostrictive units are called inserts, a term that describes how the device fits into the handpiece. Magnetostrictive inserts are made with a series of nickel alloy strips stacked one on top of another, attached to a scaling tip via a connecting body called a transducer. Magnetostrictive inserts come in either 30K or 25K configurations. Most automatically tuned machines use the shorter 30K inserts, while a few units will accept either a 25K or 30K insert.

Right and left tip configurations.
For piezo scalers, the scaler portion is referred to as a tip. Piezo tips screw directly into the handpiece, which houses the crystal that creates tip vibrations. Piezo units use two different thread patterns to screw the tip into the handpiece. S-threaded tips work with Satelec scalers and compatible units. An E-thread works with EMS piezo scalers and units that accept that thread pattern. The tip is initially screwed onto the handpiece and a small wrench is used to ensure the tip is secure. Torque-limiting wrenches ensure that the tip is not over-tightened.

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Saturday 1 April 2017

歯科根管治療の流れ - 歯の寿命はこれで決まる












Saturday 18 June 2016

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.

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.

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.