1. Introduction
tooth
HYDROXYAPATITE, ATROPHIED
Dimensional changes in the alveolar bone after tooth extraction are well-known [A thin, atrophied alveolar ridge may pose challenges in achieving favorable esthetics and long-term success with dental implant therapy in this critical zone. When immediate implant placement is not recommended, alveolar ridge preservation (ARP) techniques are used to minimize the reduction of the alveolus dimensions after tooth extraction. Most of these techniques include applying space-preserving biomaterials [Histologically, human dentin and enamel comprise 45% organic material and 55%inorganic structure, primarily hydroxyapatite [Autogenous dentin biomaterials (ADB) have osteoinductive and osteoconductive properties with organic and inorganic ingredients, making them suitable as a grafting substitute for alveolar ridge preservation ARP [