Dental high-speed mobile phone sterilization & maintenance

Dental high-speed mobile phone sterilization & maintenance


Dental handpieces have become a necessary tool for oral clinical work. There are a wide range of handsets available in the market, complete functions and different qualities. However, its price is relatively expensive, so it is necessary to take appropriate maintenance measures to maintain its mechanical properties as long as possible. On the other hand, the mobile phone generates negative pressure when the operation is stopped, and blood, saliva and detritus will enter the air and water into the interior of the mobile phone and distribute it to bearings, balls and other places, becoming an important medium for cross-infection. Therefore, "a person (patient) a machine" has been more and more oral medical institutions identified as an important measure of infection control.


Frequent use of dental handsets can cause wear and tear. However, according to the survey, the most common cause of dental handpiece damage is debris and overheating. If you enter the dental hand piece's internal blood, saliva, debris before sterilization is not cleaned, it will be hardened at high temperature roasted moxibustion, damage to the mechanical parts of the hand piece. Handpiece under high temperature, the metal materials and design components will also be damaged, so the dental handpiece manufacturers are required to sterilize a wide range of temperatures do not exceed 135 .


Each manufacturer's sterilization and maintenance of their products have their own rules, carefully read the manufacturer's instructions, in strict accordance with the instructions on the requirements of the cleaning and sterilization, is the most important part of cell phone maintenance. It is best to extract the contents of the manual extract, printed cards, sent to the staff, and regularly to review the routine, to prevent inertia and "simplified" a certain step. The types of handsets chosen for each clinic vary, and new staff may be unfamiliar with the handsets used and should receive the necessary training. Clinics should arrange for someone familiar with common troubleshooting methods, the best can get the support of manufacturers and distributors, regularly sent to the clinic during the clinic to do professional maintenance.


Dental hand piece sterilization should be someone responsible. No matter how busy the work is, these tasks must be done in a step-by-step manner. It is absolutely impossible to "cut corners and cut corners." The so-called "maintenance-free" phone only made special processing on the surface of the ball, making the phone will not stick debris during use, the lubricant will not be lost. However, the rest of the bearing (such as O-rings, etc.) or to be maintained, so do not ignore the routine maintenance of these phones.


Rinse is an important preparatory work for cell phone maintenance. Flush with a pressurized detergent nozzle at the air inlet of the rear of the hand piece and clean the debris inside the phone with a detergent. Then connect the handpiece to the dental chair and do not remove the bur (most handpieces should not be removed during operation). Start the machine and flush the remaining debris and detergent in the handpiece.


The parts of the dental hand piece are made of steel, so the key to maintenance is to keep these parts isolated from moisture at all times, and the best way to isolate them is to lubricate them. The authoritative opinion that: bearing the ball at any time there should be lubricants. However, too much lubricant will block the sterilization surface and sterilization factors affect the sterilization process. Too much lubricant accumulates on the surface of the ball, which can also detract from the hand piece's performance.


The American Academy of Dental Sciences (ADA), the Centers for Disease Control (CDC), and the FDA all agree that autoclaving is the best method of sterilization of dental handpieces. Now on the market of high temperature and pressure sterilization furnace can be used for dental hand piece sterilization. Disinfection furnaces have a good set of sterilization procedures, the entire heating and pressure, maintain, cool down, drying process completed within an hour. Unless urgent use, the hand piece should be packaged or placed in an appropriate container before sterilization. Dental hand piece sterilization is not suitable for immersion method, high temperature and too long time. When the hand piece is still hot, do not deliberately bring down the temperature in a short time (such as washing with disinfectant), which will damage the fine components inside the hand piece.


In order to ensure the effectiveness of dental hand piece sterilization, autoclave sterilization furnace should always maintain a good working condition. In addition to checking the tightness of the seal every time, the color of the indicator strip on the package's pockets should be changed, and a biological test should be conducted weekly.


The closer the handpiece is from the heat source, the more easily its components are damaged and degenerated. High-temperature high-pressure sterilization furnace heat source at the bottom, so the disinfection of the paper bag with a handpiece should be in the top of the disinfection furnace, try to stay away from heat, not on the bottom.


Most sterilization furnaces have a high temperature drying program after they have been sterilized. This is an important part to prevent the handpiece rusting, if this procedure fails, it should be promptly repaired.


In order to ensure the normal operation of the handpiece, you should also select the appropriate car needle. Big bur and long bur should be minimized, they will greatly increase the load on the ball; too small bur will slip, the bur is too large card stuck in a fixed slot; bur wear will increase the bearing heavy workload


Driving the handpiece's air pressure is too low will affect the normal operation of the handpiece, but also cause handpiece damage. Different handpiece have different working pressure, so every day before starting work should be in accordance with the provisions of the manufacturer to adjust the pressure. When the gas reaches the cellphone from the barometer, the pressure will usually drop 1.0psi. Add this difference to the calculation. In addition, you should always pay attention to listen to the noise generated by handpiece work, find out when abnormal pressure adjustment in time.


Dental handpiece bearings are composed of many components, of which balls and o-rings are the most vulnerable parts. The high temperature generated during sterilization can aggravate the degree of ball damage. Timely replacement of balls and o-rings saves more time and money


Now, more and more doctors like to use handpiece with optical fibers. The price of such phones is generally 20% -40% more expensive than fiber optics. The light intensity of this phone will be weakened with the extension of the use of time, it was tested, after using 1000 times, the light intensity decreased by 50%. The causes of diminished light intensity are: blackening of the binder resin by the fiberization process; breaking of individual optical fibers; coarsening of the lens due to repeated use; coverage of the lens with other materials. Lens problems are still relatively easy to solve, can be cleaned and polished (using a special polishing tool). However, the degeneration and breakage of optical fibers are difficult to recover.


Measures to extend the life of handpiece:


Before use: Make sure the dental chair's compressed air is water and oil-free; ensure that the dental chair's water is free from impurities; Determine the air pressure on the dental chair unless specifically specified by the manufacturer; and ensure that the temperature of the handpiece has returned to room temperature.


Use process: Ensure that the air pressure is less than 0.25; try not to use the big bur and long bur; Do not use too big or too small bur; Do not use the heavy abrasion bur; When the mechanic sanding (including the clinical model And prosthesis modifications) do not use a high-speed handpiece.


After use: rinse the phone with detergent before sterilization; sterilization temperature should not exceed 136 ; do not leave the phone overnight in the sterilizer; if only lubricated after sterilization, just add a few drops of oil.


Weekly Care: Use a handpiece cleaner to clean the mandrel of a press-type handpiece.


Quarterly Maintenance: Check the dental chair air dryer and water filter.


Bearing replacement: Before installing the bearings with ultrasonic cleaner to clean the handpiece casing; ultrasonic cleaning rinse the handpiece case, cleaning the handpiece head; timely replacement of O-rings, springs, clips and other components.


Dental hand piece sterilization steps:


Only manufacturers that can be sterilized phone can be sterilized. The following steps are common general steps, more importantly, in accordance with the provisions of the manufacturer for maintenance and sterilization.


1. After the treatment, remove the debris from the handpiece before removing the bur and start the machine to wash the handpiece's airway and water tube.


2. Remove the bur and remove the handpiece. If the manufacturer recommends using ultrasonic cleaning, according to the instructions of the manufacturer to clean the handpiece and its head, and then put the handpiece into the chair, start the machine to clean the debris inside the handpiece; if the manufacturer did not recommend the use of ultrasonic cleaning, Wash the handpiece with soapy water or detergent under running water.


3. If the handpiece needs to be lubricated before heating, use the manufacturer's recommended cleaner to remove debris from the handpiece and lubricate it. If you do not need heating before lubrication, the choice of non-lubricant cleaner, follow the manufacturer's instructions to clean the handpiece, do not over-lubricate.


4. And then install the handpiece to the dental chair, start the machine, remove the excess lubricant in the handpiece out to prevent excessive heating in the process of uneven accumulation of lubricant in the handpiece. If the manufacturer did not specify, the handpiece should be loaded when turning the needle.


5. Wipe the fiber optic connector and its exterior with damp alcohol cotton balls (do not have too much alcohol). Do not use highly concentrated solutions to avoid damage.


6. After cleaning and drying the handpiece, place it in a paper bag and sterilize the handpiece according to the manufacturer's specifications and the operating conditions of the sterilizer. Store the handpiece in a safe place after sterilization and do not open the closed paper bag before use.


7. Turn on the machine for 20 to 30 seconds before installing the handpiece and flush the dental chair air and water pipe.


8. If the handpiece does not require sterilization after lubrication, open the paper bag in front of the patient to show that the handpiece undergoes a rigorous sterilization. If you need to lubricate after sterilization, be sure to open the paper bag at the end of the handpiece before use lubrication, do not add excessive lubricant.


Dental handpiece common problems and solutions problem:

Inspection found dirty bearings

Solution: mostly due to debris accumulation.

1 Check the dental chair water vapor supply; 2 wash the handpiece with a handpiece cleaner before sterilization; 3 replace the bearing, install a new bearing first clean the handpiece case with an ultrasonic cleaner.


Problem: Check that the bearing black

Solution; mostly due to sterilization temperature is too high and debris accumulation caused.

1 to complete the above steps; 2 check the sterilization and disinfection furnace, if necessary, professionals to check the sterilization process temperature.


Problem: The bearing is often damaged

Solution: 1 to complete the above steps; 2 check the handpiece head (including the inner surface) is damaged;

3 bearings should only be repaired once, if further damage should replace the new bearing; 3 timely replacement of O-ring;

4 try to use a short needle, do not use the wear of the bur; 5 to repair the bearing in accordance with the provisions of the operating techniques to do;

6 Each patient must be treated after treatment.


Problem: The bur can not be fixed on the push type handpiece

Solution: more due to the accumulation of debris or excessive bur caused.

Treatment can not be fixed with the same bur.


Question: The bur moves when the bearing is rotating

Solution: This is often caused by bending the bur or the center of the mandrel.

1 Check the needle is bent; 2 If the bur is not bent, you need to replace the spindle;

3 do not use the big bur and long bur;


Problem: Work torque or efficiency is reduced

Solution: ball wear or trachea barrier is the main reason for this situation.

1 check the ball wear status and found worn to be replaced; 2 replacement O-ring;

3 check the phone trachea, found unobstructed, please professional maintenance.


Problem: "Maintenance-free" ball bearing wear

Solution: 1 Do not flush this handpiece; 2 Do not use "maintenance free" handpiece and general one in the same clinic. Bearing rust under normal circumstances, the bearing will not rust, but debris accumulation, and in the wet state may rust.

3 Each patient rinse and dry the handpiece immediately after treatment. Do not sterilize the handpiece in a wet bag.

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