Written and maintained by CASRAI Editorial Board
Last updated
General product and regulatory information only, not medical or clinical advice. Facts checked 2026-10-31.
Short answer
An electric dental handpiece is a hand-held dental device driven by an electric motor, used to prepare cavities for fillings and to clean teeth. In US regulation “electric” is a power source, not a separate device class: 21 CFR 872.4200 covers AC-powered, water-powered, air-powered and belt-driven handpieces together as Class I, and the CDC says dental handpieces should always be heat sterilized between patients.
Definition and scope
The Code of Federal Regulations, at 21 CFR 872.4200, defines a dental handpiece and accessories as “an AC-powered, water-powered, air-powered, or belt-driven, hand-held device”. The device may include a foot controller for regulating speed and direction of rotation, and it is intended to prepare dental cavities for restorations, such as fillings, and for cleaning teeth. The regulation classifies the device as Class I.
This page covers what the electric type is, how US sources classify it and what the CDC says about reprocessing it. Coupling types and the comparison of speed classes are covered in Dental Handpiece Types: High-Speed, Low-Speed, Electric and Couplings Explained.
How it is used in practice
The regulatory text describes the device by its power source and its optional foot controller. The CDC states that “dental handpieces include high-speed, low-speed, electric, endodontic, and surgical handpieces”, so the electric handpiece is named as its own family in infection-control guidance even though the CFR groups it with the others.
The FDA product classification database lists product code EKX under the device name “handpiece, direct drive, ac-powered”, class 1, regulation number 872.4200, submission type 510(k).
Which term means what
| Term | Where it appears | What it says |
|---|---|---|
| Electric handpiece | CDC dental handpiece guidance | One of the listed handpiece families: high-speed, low-speed, electric, endodontic, surgical. |
| AC-powered handpiece | 21 CFR 872.4200 | One of four power sources (AC, water, air, belt) covered by one Class I device definition. |
| Handpiece, direct drive, ac-powered | FDA product code EKX | The device name FDA lists under regulation 872.4200, class 1. |
A supplier catalogue may call the same kind of product an electric handpiece, an AC-powered handpiece or a direct-drive handpiece. The regulatory names above are the defined ones; for any other trade term, such as micromotor, check the manufacturer’s own description of what the product includes.
Where it matters for labs, clinics and supply decisions
For anyone documenting or stocking handpieces, the CDC’s page on dental handpieces gives a short checklist:
- Heat sterilize handpieces between patients. The CDC says “these devices should always be heat sterilized between patients”.
- Use FDA-cleared devices and reprocess instruments between each patient.
- If a handpiece cannot be heat sterilized and does not have FDA clearance, the CDC says dental staff should not use it.
- The CDC’s handpiece family includes attachments such as prophy angles and nose cones. Staff should also follow the validated manufacturer’s instructions for reprocessing handpiece couplers.
The CDC page does not give separate instructions for electric motors, so the instructions for use supplied with the specific product govern. Related CASRAI references: handpiece lubricant, dental autoclave monitoring, sterilization technology and ultrasonic cleaners for dental instruments.
Common misunderstandings
“Electric” is a separate regulatory class
It is not. 21 CFR 872.4200 defines one handpiece device with several power sources, and product code EKX is the AC-powered entry in that group.
Class I means no reprocessing rules apply
Class I is a regulatory classification. It does not change the CDC’s guidance that handpieces be heat sterilized between patients.
Wiping the surface is enough
The CDC guidance calls for heat sterilization between patients, not surface cleaning alone.
FAQ
What is an electric dental handpiece?
A motor-driven, hand-held dental device used to prepare cavities for restorations and to clean teeth. In US regulation it falls under 21 CFR 872.4200 as an AC-powered handpiece, Class I.
What is the FDA product code for it?
EKX, named “handpiece, direct drive, ac-powered” in FDA’s product classification database, class 1, regulation 872.4200.
Does the CDC say how to reprocess one?
For dental handpieces in general: heat sterilize between patients and follow the manufacturer’s validated instructions where the CDC calls for them. The CDC page does not single out electric motors.
Sources
- 21 CFR 872.4200, Dental handpiece and accessories: https://www.law.cornell.edu/cfr/text/21/872.4200 (checked 2026-10-31).
- FDA Product Classification database, product code EKX: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpcd/classification.cfm?id=EKX (checked 2026-10-31).
- CDC, Best Practices for Dental Handpieces: https://www.cdc.gov/dental-infection-control/hcp/dental-ipc-faqs/dental-handpieces.html (checked 2026-10-31).
