结论口腔环境下，皮肤和牙槽黏膜均有纤维结缔组织在种植体表面附着，形成“袖口”，起生物封闭作用。
Conclusion Skin graft and alveolar mucosa both formed fiber connective tissue attachment on the surface of implant, which seal the environment between the oral and bone-interface.
目的探讨结缔组织生长因子在口腔黏膜下纤维性变发病机理中的作用。
To investigate the significance of connective tissue growth factor in the pathogenesis of oral submucous fibrosis.
方法56例黏膜下平滑肌瘤经内镜进行治疗，治疗中用针形刀首先切开肿瘤表面组织然后剥离瘤体组织。
Methods 56 patients with submucosal leiomyomas of esophagus were treated endoscopically. The technique consisted of incision of the overlying tissue followed by tumor stripping using a needle knife.
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