半负荷状态下即刻和延期植入种植体的实验研究

An experimental study of Immediate and Postponed Intra-mandibular Implants in the Semi-function State

选择3种不同种植体采用即刻和延期两种方式植入5只狗的下颌前磨牙及第一磨牙区内,呈半负荷状态,分别于术后 2.4.6.8.12.24周取出标本作X线.LM SEM观察,结果显示:3个月时所有种植体均已达到完善骨整合,成骨量和骨小梁排列方向与(牙合)力负荷一致,且在同一机体上,骨整合无显著性差异,不同种值体之间8周时骨整合己无差异.

Three types of dental implants were implanted in the mandibular premolar and the first molar region of five beagle dogs by using immediate implantation (just after ex-traction) and postponed implantation (3 months after extraction) in the semi-function state. The interfaces between implants and bones were studied by x-ray, LM and SEM respectively at week 2,4,8,12 and 24 after implantation. The results showed that osseointegrations were finished after 3 months. Occlusion loading determined bone qualities and directions of wovenbone. We found that osseointegration showed no significant difference in the same dogs and in all implants after 8 weeks.