Lekholm and Zarb classified maxillary and mandibular bone in an edentulous person. This can impact the stability of a dental implant.
(1) bone shape or volume
(2) bone density or quality
Code for Bone Volume/Shape
no or mild resorption (most remains)
Code for Bone Density/Quality
homogenous compact bone throughout the entire jaw
small amount of dense trabecular bone
thick layer of compact bone
core of dense trabecular bone
thin rim of cortical bone
care of dense trabecular bone
core low density trabecular bone
The final designation is expressed by combining the two codes:
(bone shape code) / (bone quality code)
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