Objective To observe the clinical effects of alveolar ridge augmentation by using dense polycrystal particulate hydroxyapatite(HA) in dental implant.

• 目的观察运用致密羟基磷灰石(HA)微粒,在颌骨萎缩患者牙槽嵴上行牙槽骨扩展术后行人工种植牙的临床效果。