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Re:How to maintain your handpieces (1 viewing)
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TOPIC: Re:How to maintain your handpieces

#274
unjing (User)
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Re:How to maintain your handpieces 2008/08/13 12:18 Karma: 0  
Good post, malaking tulong yan. Mahal na ang handpiece ngayon. This may be useful also. From www.directturbine.com

15 Most Common Reasons for Early Handpiece Failure

The most common reasons for premature failure result from practices (or lack thereof) that take place in the dental office. We created the following list of the most common reasons for early turbine failure to help you maximize the life of your handpiece.

1. Improper repair or installation. Turbine installation and repair is a much more delicate matter than most realize. If a turbine is not set just right, it will not last long. The most common signs of improper installation are 1) if the running noise is excessively loud or fluctuates, 2) the handpiece head vibrates, 3) if the back cap heats up during operation, 4) the bur will not insert/release, and/or 5) there is little or no torque during operation. As an added service to you, our expert technicians will install your new turbine for FREE.

2. Running handpieces beyond recommended air pressure. Manufacturer's specify the maximum air pressure tolerances for each handpiece make and model. Exceeding air pressure recommendations will cause the turbine to work beyond its capabilities and thus fail prematurely. (32-40 psi is typical)

3. Using a handpiece before it has completely cooled. When metal is heated, it expands. If the turbine runs while it is still warm (and expanded), it will quickly fail. First, the handpiece should be cooled with the paper side of the sterilizer bag facing up to allow moisture to escape. Second, the handpiece outer shell should, at a minimum, be cool to the touch before use. Please note: cooling the outer handpiece shell under cold water will not cool the internal turbine sufficiently!

4. Too few handpieces per operatory. There should be at least three handpieces for every operatory (one in use, one in the autoclave, one cooling down). Excessive use and repeated autoclave cycles will greatly reduce the lifespan of a handpiece turbine and other components.

5. Leaving the bur in the handpiece during autoclaving. When a bur is inserted, the chuck spring is compressed. Subjecting a spring to heat and corrosion under tension will weaken it, shorten the life, and cause burs to “cement” into place.

6. Not applying enough lubricant. Handpieces should be lubed prior to sterilization AND after sterilization (2-3 drops of oil or 1-2 seconds of spray lube).

7. Not running the handpiece after applying lubrication. Running the handpiece after lubrication (3-4 seconds) will insure that the lubricant reaches all moving parts and that excess oil is expelled . Excess oil will “gum up” internal parts causing poor performance and failure.

8. Using a chemical or soap to wipe-down handpiece. When high heat from the autoclave is applied to chemical cleaners, oxidation and/or residues cause turbine parts to work improperly and/or bind. Handpieces should only be wiped down with a clean, damp cloth.

9. Lubricating in the wrong hole. The drive air line leads directly to the handpiece turbine while other lines (water, exhaust) do not. It is critical that oil is delivered to the correct opening.

10. Using an incorrect lube applicator (for quick-disconnect models). The lube tip should fit the handpiece quick-disconnect properly. Using an incorrect applicator will not insure that the turbine is being lubed.

11. Leaving levers open during autoclaving (for lever-type handpieces only). Similar to leaving a bur in the chuck while autoclaving, the lever actuates the spring when it is open. The chuck will not last long under these circumstances.

12. Failing to maintain autoclaves. If the autoclave is not properly cleaned, build-up can occur that contaminates the entire system, including the handpieces.

13. Using an ultrasonic cleaner or solution. When a turbine is inserted inside a handpiece, it should never be immersed in any fluids other than a cleaning solution recommended by the manufacturer.

14. Not cleaning the chuck. Debris builds up quickly inside the chuck (bur insertion hole). This debris clogs the spring and causes bur slippage. Just one spray of cleaner into the bur hole once per week will reduce this common problem.

15. Improper Bur Length. As a general rule, the exposed length of the bur should not exceed the length of the head of the handpiece. This includes not using burs that are too long, and making sure burs that are not too long are inserted completely into the handpiece head. Often, doctors like a little extra length from a bur during a procedure. However, this extra length means the turbine is not holding the bur properly, creates poor balance and concentricity, and will prematurely loose its ability to retain the bur in place.
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How to maintain your handpieces
hunterako 2008/08/13 12:08
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unjing 2008/08/13 12:18
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unjing 2008/08/13 12:21
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cutedoc 2008/08/14 07:33
_GEN_GOTOTOP Post Reply
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