Miyata T, Kobayashi Y, Araki H, Motomura Y, Shin K
Department of Periodontology, Meikai University School of Dentistry, Saitama, Japan.
Int J Oral Maxillofac Implants. 1998 Sep-Oct;13(5):677-83.
This study examined the influence of controlled occlusal overload on an implant. An experiment was conducted on five crab-eating monkeys (Macaca fascicularis) in which overload with no inflammation in the peri-implant tissues was modeled. Two osseointegrated implants were placed into each monkey. After 3 months of osseointegration, superstructures that were excessive by about 100 microns were mounted on the implants, and a traumatic occlusal force was experimentally delivered to its implant from the lingual to the buccal side. This procedure was performed under conditions of good oral hygiene. The monkeys received an excessive occlusal force for 1 to 4 weeks and were then immediately sacrificed. The results showed that the implants remained firmly integrated with bone, and all of the subjects that received excessive occlusal force for 1 to 4 weeks showed an absence of gross bone loss. These results suggest that conditions of occlusal force created by excessively high implant-supported superstructures may not destroy the peri-implant tissues.
本研究考察了可控性咬合过载对种植体的影响。对五只食蟹猴（猕猴）进行了一项实验，模拟种植体周围组织无炎症的过载情况。每只猴子植入两颗骨整合种植体。骨整合3个月后，在种植体上安装高出约100微米的上部结构，并从舌侧向颊侧对种植体施加实验性创伤性咬合力。该操作在良好口腔卫生条件下进行。猴子接受过度咬合力作用1至4周后立即处死。结果显示，种植体与骨保持牢固整合，所有接受1至4周过度咬合力的受试对象均未出现明显骨丢失。这些结果表明，由过高的种植体支持上部结构产生的咬合力条件可能不会破坏种植体周围组织。
