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This page describes products and general use; it is not medical advice.
A periodontal probe is a slim, graduated hand instrument used in dental settings to measure and check the tissue around teeth. This page is for clinic staff, buyers and students who need to read a probe’s name, markings and regulatory identity correctly. It covers what the instrument is, how its markings differ between makers, and where reprocessing guidance comes from. It does not teach clinical technique.
What a periodontal probe is
A periodontal probe is a hand-held dental instrument with a thin working end marked in millimetre bands. In US federal regulation it falls under 21 CFR 872.4565, “Dental hand instrument”, which describes the category as “a hand-held device intended to perform various tasks in general dentistry and oral surgery procedures” and names a “periodontic probe” in its list. FDA’s classification database lists the product code EIX as “Probe, Periodontic” (Dental panel, regulation 872.4565, class 1).
Who uses it: dentists, dental hygienists and dental assistants use probes; procurement and sterile-processing staff handle and order them; dental students learn the pattern names.
How it is built
Manufacturer descriptions in FDA’s GUDID database (the Global Unique Device Identification Database) show the common parts: a handle, a shank, and a thin working end with a graduated scale. Some handles carry exchangeable tips: Helmut Zepf lists a North Carolina style probe as “exchangeable” with an M4 x 0.5 thread, graduated in 1 mm steps from 1 to 15 mm. Tip materials also vary in the records, for example a titanium tip on the Florida Probe pocket depth handpiece and a titanium tip with zirconium nitride coating on a Kohdent Williams probe.
Types and markings
The same pattern name does not guarantee the same markings. The table lists records from GUDID, where manufacturers enter their own descriptions (checked 2026-10-30).
| Manufacturer record | Graduation listed | Ends |
|---|---|---|
| Reicodent / devemed, # CP11.5B (WHO) | 3.5 – 5.5 – 8.5 – 11.5 mm | Single ended |
| Reicodent / devemed, # 23/CP12 | 3 – 6 – 9 – 12 mm | Double ended |
| Reicodent / devemed, # CP11 | 3 – 6 – 8 – 11 mm | Single ended |
| devemed TITAN, # CP15 North Carolina | 1 to 15 mm, in 1 mm steps | Single ended |
| Helmut Zepf, CPG12 | 3 / 6 / 9 / 12 mm, exchangeable tip | Not listed |
| Schwert, WHO periodontal probe | 3.5 / 5.5 / 8.5 / 11.5 mm | Not listed |
Other records name Williams, Goldman Fox/Williams, UNC (University of North Carolina) pattern and Marquis tips, and one electronic option, the Florida Probe pocket depth handpiece, described as a steam sterilizable periodontal probe with a titanium probe tip. Some records mention colour coding (for example Sontec’s “color coded” UNC tip),; colour meanings differ between makers, so the maker’s label is the authority.
How to read a label or catalogue entry
- Check the printed graduation (for example 3-6-9-12 versus 3-6-8-11 versus 1-15 mm), not only the pattern name.
- Check whether it is single ended or double ended, and whether the tip is exchangeable.
- Check whether the maker labels it reusable or single use. The manufacturer’s labeling sets this, not the probe pattern.
- Read the instructions for use (IFU) supplied with the product for cleaning and sterilization limits.
Reprocessing and handling basics
The CDC’s Guidelines for Infection Control in Dental Health-Care Settings, 2003 sorts dental instruments into critical, semicritical and noncritical items. It states that semicritical items touch mucous membranes or nonintact skin and that, because most semicritical dental items are heat-tolerant, they should be sterilized by heat. It lists the electronic periodontal probe among high-technology instruments considered semicritical, as devices whose ability to be sterilized varies by manufacturer and device type. The manual probe is not named in that passage; the maker’s IFU sets the reprocessing method. For general sterilization background see autoclave cycle types and flash versus immediate-use steam sterilization.
Common mistakes
- Assuming the same markings across makers. The table above shows four different graduation patterns under related names.
- Assuming Class I means no requirements. Class I means general controls apply; 21 CFR 872.4565(b) exempts a device from premarket notification only if it is made of materials used before 28 May 1976.
- Confusing probes with explorers. FDA files both under 872.4565 but they are different instruments; see dental explorer types.
FAQ
What is a periodontal probe?
A graduated dental hand instrument with a thin working end. FDA lists it as “Probe, Periodontic”, product code EIX, class 1, under 21 CFR 872.4565.
Is a periodontal probe reusable?
It depends on the product. Manufacturers label each probe as reusable or single use, and the product’s IFU states which applies.
Are all probes marked the same?
No. Records list 3-6-9-12 mm, 3-6-8-11 mm, 3.5-5.5-8.5-11.5 mm and 1-15 mm graduations, depending on the maker and pattern.
Related reading: dental surgical instruments.
Sources
- 21 CFR 872.4565, Dental hand instrument, Cornell LII, law.cornell.edu/cfr/text/21/872.4565 (checked 2026-10-30).
- openFDA device classification, product code EIX, api.fda.gov (checked 2026-10-30).
- openFDA UDI / GUDID records, api.fda.gov/device/udi.json (checked 2026-10-30). Descriptions are entered by manufacturers.
- CDC, Guidelines for Infection Control in Dental Health-Care Settings, 2003, MMWR RR-17, cdc.gov/mmwr (checked 2026-10-30).
