Difference of Stress distribution and Bone remodeling under Occlusal force on two kinds of Dental Implant.

种植体-骨粘连的差异影响牙合应力浓度和骨重塑。在ha种植体中，牙槽骨主要是附着在种植体颈部的牙槽骨进行牙合应力和骨重塑。另一方面，在钛种植体中，主要对种植体底部周围的松质骨进行牙合应力集中和骨重塑。但在实验条件下，两种种植体的骨吸收存在少量差异。因此，种植体与骨粘连的差异对种植体的临床顺利进行影响不大。牙合应力过大加种植周炎时骨吸收最多，种植周炎时骨吸收次之。实验组种植体牙合应力过大，牙槽骨吸收最小。对照组两种种植体均有少量骨吸收。种植周炎对骨吸收和骨重塑的影响大于两种种植体的牙合应力过大，因此，控制好种植周炎是保证种植体临床顺利进行的最重要因素。

Difference of implant-bone adhesion was influence to concentration of occlusal stress and bone remodeling. In HA-implant, occlusal stress and bone remodeling was mainly performed on alveolar bone which was adhesion to neck part of implant. On the other hand, in Ti-implant, concentration of occlusal stress and bone remodeling was done on mainly cancellous bone around implant bottom. But, difference of a little amount of bone resorption was shown between two kinds of implant under experimental conditions. Therefore, the difference of implant-bone adhesion was suggested a little influence to implant successful clinical course.The most large amount of bone resorption was found under the condition of excessive occlusal stress plus peri-implantitis, and the next large amount bone resorption was found in peri-implantitis. Excessive occlusal stress on implant showed the smallest alveolar bone resorption in experimental group. In control group, the two kinds of implant showed little amount of bone resorption.Peri-implantitis was more influence on bone resorption and bone remodeling than excessive occlusal stress of two kind of implant Therefore, a good control of peri-implantitis is the most important factor for good clinical course of dental implant.