钛合金烤瓷全冠修复龈下残根残冠67例-医药英语-论文中心 关键词 钛合金；烤瓷；核桩；龈下 [gap=657]Keywords：titaniumalloy;ceramic;postcore;subgingival
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目的观察牙冠延长术治疗断缘位于龈下的冠根联合折断牙的临床效果。
Objective:To observe the clinical effect of tooth extrusion with progressive methods for anterior teeth with crown-root fracture.
方法：对38颗牙体缺损达龈下的患牙行牙冠延长术，以恢复患牙的生物学宽度。
Methods:On 38 teeth due to various crown damages or vertical fractures in subgingival lesions were performed with surgical crown lengthening in order to achieve biologic width.
目的：研究伴放线菌放线杆菌在牙周炎患者和健康人龈下菌斑中的分布。
Objective: To determine the distribution of Actinobacillus actinomycetemcomitans (Aa) in subgingival plaques in the patients with chronic periodontitis(CP).
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