Porous hydroxyapatite granules for alloplastic enhancement of the facial region

Hydroxyapatite is a biocompatible alloplast with the same chemical composit ion as bone. It is readily incorporated into host bone, does not undergo ap preciable resorption, does not incite a clinically significant foreign body reaction and resists infection. This article describes forms of hydroxyapa tite, procedures for use, and clinical examples.