What is Lekholm and Zarb Classification in Implant Dentistry?

A widely referenced system for classifying residual alveolar bone into four quality types (Types I–IV) based on the ratio of cortical to cancellous bone, used to guide implant treatment planning.

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Implant Dentistry Glossary

104 terms total — 1 showing — Last updated 26 Oct 2026

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transmucosal collar

Intermediate Technical IVT

The polished, gingival-penetrating portion of a tissue-level implant or healing abutment that traverses the soft tissue and defines the mucosal seal.

26 Oct 2026

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Lekholm and Zarb Classification

Professional Formal IVT

A widely referenced system for classifying residual alveolar bone into four quality types (Types I–IV) based on the rati...

Lekholm–Zarb classification bone quality classification (Lekholm and Zarb)

Technical Term Full entry →

Glossary terms, with category, difficulty and definition
Term	Category	Difficulty	Definition
Lekholm and Zarb Classification IVT	Technical Term	Professional	A widely referenced system for classifying residual alveolar bone into four qual...

Glossary Stats

Total terms 104

IVT eligible 102

Verified 0

basic 8

intermediate 57

advanced 34

professional 5