Periodontal probes measure pocket depths, attachment levels and bleeding on probing. The main difference between them is the pattern of markings along the tip. Using the same type of probe consistently helps clinicians compare readings over time, so it is worth choosing periodontal probes carefully.
In short
Williams and UNC 15 probes are used for detailed charting; the WHO (CPI) probe with its ball tip is used for screening; Nabers probes measure furcations. Clear, durable markings matter most.
Common periodontal probes#
| Probe | Markings | Typical use |
|---|---|---|
| Williams | 1, 2, 3, 5, 7, 8, 9, 10 mm | General pocket charting |
| UNC 15 | Every millimetre to 15 mm, bands at 5, 10 and 15 | Detailed charting, deeper pockets |
| Marquis | Colour-coded bands, often 3, 6, 9, 12 mm | Quick reading of pocket depth |
| Michigan O | Thin tip, often 3, 6, 8 mm (also with Williams markings) | Charting with a fine tip |
| WHO / CPI | 0.5 mm ball tip and a coloured band | Periodontal screening (BPE/CPI) |
| Nabers | Curved tip, often marked at 3-mm intervals | Measuring furcation involvement |
Screening and charting#
For basic periodontal screening, many clinicians use the WHO (CPI) probe. Its ball tip helps detect calculus and reduces the risk of over-penetration, and the coloured band shows quickly whether a pocket falls within a screening code. For full charting, Williams or UNC 15 probes give readings to the nearest millimetre.
Markings: etched, banded or coloured#
Markings should stay readable through hundreds of sterilization cycles. Laser-etched lines and durable colour bands last much longer than printed marks. Check the markings carefully when choosing a supplier.
Quality checklist
- Markings are crisp, accurate and durable.
- The tip is smooth and rounded, of consistent diameter.
- The working end is straight and correctly angled.
- The handle gives a light, comfortable grip.
Frequently asked questions#
Why does the WHO probe have a ball tip?#
The 0.5 mm ball helps the clinician feel calculus and reduces the risk of pushing the probe too far into the tissue.
Which probe is best for detailed periodontal charts?#
Many clinicians use a UNC 15 because it has a marking at every millimetre up to 15 mm.
When should probes be replaced?#
When the markings become hard to read or the tip is bent or worn.
Order periodontal probes from Gami Surgical#
Gami Surgical manufactures periodontal probes and other dental hand instruments in Sialkot, Pakistan, and delivers worldwide. Send us the patterns and quantities for a quote.
