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Safety Investigation of Patient Burns Associated with Electric Dental Handpieces and Electric Oral Bone-cutting Handpieces

Date issued:
Sept 23, 2010

Dentists, Dental Hygienists, Dental Assistants

Electric dental handpieces and electric oral bone-cutting handpieces are AC-powered hand-held devices used to prepare dental cavities for restorations, such as fillings, and for cleaning teeth. For the purposes of this communication, is the term “handpiece” includes the motor, contrangle, and burr.

The FDA is again alerting dental professionals that serious patient burns can occur when electric dental handpieces overheat during dental procedures. Burns may not be apparent to the operator or the patient until after the tissue damage has occurred, because the anesthetized patient cannot feel the tissue burning and the handpiece housing insulates the operator from the heated attachment. These burns range from first degree burns to third degree burns requiring reconstructive surgery.

The FDA first informed dental professionals of this problem in 2007 (see Public Health Notification: Patient Burns from Electric Dental Handpieces). In that notice, the FDA reminded users of the importance of properly maintaining the handpieces. Since the notice, the FDA has received numerous additional reports of patients being burned by electric dental handpieces.

The FDA is recommending that dental professionals:

  • Be vigilant about maintaining electric dental handpieces and electric oral bone cutting handpieces according to the manufacturer’s instructions.

  • Verify with the manufacturer the appropriate routine service interval for your dental practice, based on the actual use of your electric dental handpiece or electric intraoral bone cutting handpieces.

  • Train personnel to properly clean and maintain the electric dental handpiece or electric intraoral bone cutting handpiece.

  • Develop a method for tracking maintenance and routine service for each dental handpiece or electric intraoral bone cutting handpiece.

  • Examine the electric dental handpiece attachments and electric intraoral bone cutting handpiece attachments prior to use. Do not use worn drills or burs.

  • Do not use poorly maintained electric dental handpieces or electric intraoral bone cutting handpieces.

  • Report overheating to the manufacturer.


Be Aware of  

Heat can be an issue
withelectric handpieces.
Make sure you test before
each use, and monitor
heat while using. Always
test the 1:5 increasers
before using on a patient,
as these handpieces, in
particular, have a tendency
to heat up. Be sure to
monitor the heat of the
head during the procedure.

Preventing Burns from Electric Dental Handpieces.