摘要
采用透射电镜观察了混合玻璃陶瓷涂层骨内牙种植体与软组织的界面,分析了上皮细胞附着于种植体表面的附着机制。结果表明:在附着于种植体表面的结合上皮细胞的外单位膜上,有半桥粒、基板和衬里缘,这些结构与附着于天然牙表面的上皮细胞的结构相似。说明在种植体与牙龈组织之间有生物性附着。这种生物性附着起到生物屏障的作用,使该类骨内牙种植体具有长期行使生理功能的可能性。
The interface of the crevicular gingiva with a dental implant is a critical zone repr-esenting the potential biological seal which protects the underlying bone and soft tissue-supporting mechanisms from destructive extraneous substances.Ultrastructural observationof regenerated junctional epithelial celIs interfacing surgically placed M-coated endostealdental implants exhibited an external basal lamina located between the external surfaceepithelial cell and the implant and hemidesmosomes located at intervals along the outerjunctional epithelial plasma membrane.The component substructure of the basal laminaand the hemidesmosomes were similar to those seen interfacing natural teeth.This studyprovides ultrastructural evidence for the presence of an attachment complex betweengingiva and M-coated implants which is analogous to that seen around natural teeth.These data support the concept that a viable biological seal can develop around endostealdcntal implants and provide support for satisfactory clinical service.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
1992年第3期224-226,共3页
West China Journal of Stomatology
