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Biomimetic Dentistry Glossary

Peripheral Seal Zone (PSZ)

A key term of biomimetic restorative dentistry, clearly defined. Part of The Hybrid Layer's free reference glossary.

Glossary term Free to read

Summary – What is the Peripheral Seal Zone (PSZ)?

The Peripheral Seal Zone (PSZ) is defined as the 2-3 mm of tooth structure (enamel, DEJ, and superficial dentin) in which complete caries and crack removal is indicated. The DEJ is identified and complete caries and crack removal should be carried out 1-2 mm inside of the position of the DEJ.

Caries Removal Endpoints (CRE) should be used to achieve partial removal of caries in deeper areas over the pulp within the Central Stop Zone (CSZ), in order to avoid pulp exposure.

Photo showing Caries Removal Endpoints (CRE)
Fig 1. Clinical example of complete caries removal being carried out in the PSZ.
Photo Credit: Dr John Weselake

Learn More…

To learn more about the Peripheral Seal Zone concept in relation to Caries Removal Endpoints and the use of Caries Detector Dye, see Lesson 1 of the Six Lessons Approach to Biomimetic Dentistry below.

Lesson 1 – Diagnosis And Treatment Of Caries
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See the PSZ in practice

Three lectures from the library that put the Peripheral Seal Zone to work: the Six Lessons framework it comes from, caries detector dye and the biobase on real cases, and modern cariology in daily practice.

The Six Lessons Approach to Biomimetic Restorative Dentistry — Dr Davey Alleman & Dr David Alleman How to Use Caries Detector Dye and Create a Biobase — Dr Nowais Awan Clinical Application of Modern Cariology — Dr Jorge Aravena Diaz

Every lecture is included with All-Access membership. View the full library

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