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General product and regulatory information only; this page is not medical or clinical advice and gives no instructions for using any instrument on a patient.
Short answer
An endodontic reamer is a dental hand instrument that US federal regulation names as the “endodontic pulp canal reamer”. FDA lists it as its own device type (product code EKP, “Reamer, Pulp Canal, Endodontic”) under 21 CFR 872.4565, in Class I, the lowest-risk class. The regulatory record identifies the device and its class; it does not describe how a particular reamer performs.
Definition and scope
21 CFR 872.4565(a) defines a dental hand instrument as “a hand-held device intended to perform various tasks in general dentistry and oral surgery procedures.” The regulation then names the instruments it covers, and “endodontic pulp canal reamer” is one of them. Endodontic means relating to the tooth pulp and root canal, so the reamer sits in the endodontic part of that list.
FDA’s product classification database carries the same device under code EKP, with these entries (checked 2026-10-31):
- Device name: Reamer, Pulp Canal, Endodontic
- Regulation: 21 CFR 872.4565, Dental hand instrument; review panel: Dental
- Device class: 1
- Premarket notification (510(k)): exempt
- Good manufacturing practice exemption: no
- Summary malfunction reporting: eligible
- Implanted device: no; life-sustaining or life-supporting: no
How the classification works in practice
Under 21 CFR 872.4565(b), these instruments are Class I (general controls). If the device is made of the same materials that were used in the device before May 28, 1976, it is exempt from the premarket notification procedures in subpart E of part 807, subject to the limitations in 21 CFR 872.9. For a general introduction to these pathways, see the guides on FDA 510(k) premarket notification and FDA device classification, 510(k) and PMA.
FDA’s EKP record also lists one recognized consensus standard, ISO 21850-1 (2020), which concerns stainless steel materials for dental instruments. It is a materials standard, not a standard for the geometry or performance of a reamer.
Reamers and related endodontic instruments in the regulation
The table lists endodontic and endodontic-related instruments exactly as 21 CFR 872.4565(a) names them. All are covered by the same classification text. Design and breakage detail for files is in the endodontic file guide.
| Name in 21 CFR 872.4565(a) | Listed as |
|---|---|
| Endodontic pulp canal reamer | Separate named instrument (this page) |
| Endodontic pulp canal file | Separate named instrument |
| Endodontic broach | Separate named instrument |
| Endodontic root canal preparer | Separate named instrument |
| Endodontic root canal plugger | Separate named instrument |
| Endodontic pulp canal filling material spreader | Separate named instrument |
| Endodontic curette | Separate named instrument |
| Periodontic or endodontic irrigating syringe | Separate named instrument |
Where it matters for labs, clinics and supply decisions
A supply or compliance reviewer can use the regulatory record as a checklist of what it does and does not establish:
- The device type is identifiable: code EKP, 21 CFR 872.4565, Class I.
- Class I with a 510(k) exemption means FDA has not cleared the individual product through premarket notification. It is not a finding that FDA tested a specific brand.
- The record shows the good manufacturing practice exemption as “no”, so manufacturers of this device type are not exempt from that requirement.
- The listed standard, ISO 21850-1 (2020), covers the steel used in dental instruments. Any claim about cutting behaviour or fracture resistance has to come from the manufacturer’s own documentation.
- For reprocessing and instrument-category background, see dental surgical instruments.
Common misunderstandings
Class I does not mean unregulated
Class I devices are subject to general controls, and the EKP record shows the manufacturing-practice exemption as “no”.
The CFR name is not a product specification
“Endodontic pulp canal reamer” is a regulatory device name. The regulation text quoted here does not give dimensions, flute design or materials requirements for a reamer.
One regulation covers many instruments
Because 21 CFR 872.4565 groups dozens of hand instruments, the shared Class I status says nothing about how reamers differ from files or broaches in use.
FAQ
Is an endodontic reamer the same as a file?
No. 21 CFR 872.4565(a) names “endodontic pulp canal reamer” and “endodontic pulp canal file” as separate instruments, and FDA assigns them separate entries in its classification database. The regulation text does not describe how they differ in design.
What class of device is an endodontic reamer?
Class I (general controls) under 21 CFR 872.4565, FDA product code EKP, exempt from 510(k) premarket notification as recorded in FDA’s database on 2026-10-31.
What does FDA’s record say about standards?
It lists ISO 21850-1 (2020) on stainless steel materials for dental instruments as a recognized consensus standard.
Sources
- Electronic Code of Federal Regulations, 21 CFR 872.4565, Dental hand instrument (ecfr.gov), checked 2026-10-31.
- FDA Product Classification database, product code EKP (accessdata.fda.gov), checked 2026-10-31.
