WHO / PSI Periodontal Probe
The WHO / PSI (CP 11.5) periodontal probe has a 0.5 mm ball tip with markings at 3.5, 5.5, 8.5 and 11.5 mm, and it is the probe for the WHO Community Periodontal Index and the Periodontal Screening Index, where the 3.5 to 5.5 mm band is the decision zone.
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Zepf makes it as a complete instrument and as interchangeable inserts for its handle systems. This page lists 1 complete instrument and 2 inserts, all made in Germany by Helmut Zepf, and every one on this page ships from our US warehouse.
Helmut Zepf GmbH
Regular price $149.99Unit price-
Helmut Zepf GmbH
Regular price $39.99Unit price -
Helmut Zepf GmbH
Regular price $23.99Unit price
Reference pages already linked from this collection, in one place.
Which WHO / PSI Periodontal Probe Do You Need?
Every product in this collection is listed below once, by its Zepf number, grouped into complete instruments and inserts for Zepf interchangeable handles.
Complete instruments1 items
| Zepf No. | Pattern or size | Handle |
|---|---|---|
| 24.453.03 | CP 11.5 (WHO), 3.5-5.5-8.5-11.5 mm, single-ended | Round stainless steel |
Inserts for interchangeable handles2 items
Versions, Coatings and Handles
Interchangeable inserts fit the M4 × 0.5 mm and M2.5 Zepf handle systems (ZEPF-bIONIK QuickFix, Z-SHAPE Relax, ZEPF-Line) and change with the Zepf safety key.
Warranty and Our Guarantee
Every Zepf instrument on this page carries the Helmut Zepf Warranty against defects in materials and workmanship for three years. And because an instrument can only be judged in the hand, you have 60 days to return it for any reason — even after you have used it. Try it on real patients; if it is not the instrument for you, send it back.
Made in Germany by Helmut Zepf
Helmut Zepf has manufactured dental and surgical instruments in Germany for over 100 years. Every instrument on this page is forged, ground and finished by Zepf and carries its part number for traceability.
Clinical Use
- The WHO Community Periodontal Index and the Periodontal Screening Index, where the 3.5 to 5.5 mm band is the decision zone.
- Technique: walk the probe around each tooth with light pressure (about 20 to 25 g), keeping the tip in contact with the root and the shank parallel to the long axis, and read the depth at the gingival margin.
- Reading: read the graduation against the gingival margin at each of the six sites per tooth and record the deepest reading per surface.
Sharpening, Retipping and Inserts
A probe reads reliably only while its tip is undamaged and its markings are legible. On the insert versions, a worn or bent working end is renewed in seconds by swapping the insert; complete instruments can be sent to our sharpening and reconditioning service. Sharpening stones and oil for the cutting instruments are in the diagnostic range.
Our Dental Instrument Reprocessing & Sterilization Guide covers cleaning, disinfection and sterilization of Helmut Zepf hygiene and diagnostic instruments.
Compare With
Part of the Dental Periodontal Probes collection. Related Helmut Zepf collections: UNC 15 Periodontal Probe, CPG 12 Marquis Periodontal Probe, CPN 22 Periodontal Probe, Periodontal Probe Insert Collection, and Key for Exchanging Inserts. For probe markings and terminology, see the Periodontal Probe Markings & Types Guide and the Dental Hygiene Instrument Glossary.
Related resources: Hygiene Instrument Comparison Chart · Gracey Curette Numbers & Types Guide · Dental Hygiene Instruments
FAQ
How is the WHO / PSI (CP 11.5) graduated?
A 0.5 mm ball tip with markings at 3.5, 5.5, 8.5 and 11.5 mm.
When do I use the WHO / PSI (CP 11.5) rather than another probe?
The WHO Community Periodontal Index and the Periodontal Screening Index, where the 3.5 to 5.5 mm band is the decision zone.
Are the inserts interchangeable?
Yes: the probe inserts screw into the M4 × 0.5 mm and M2.5 Zepf handle systems and change with the safety key.
Is there a warranty?
Three years under the Helmut Zepf Warranty, and 60 days to return it for any reason, even after use.
