摘要
目的:探讨金属烤瓷修复后修复体颈缘的情况。方法:对55例患者制作65个单位的金属烤瓷修复体, 冠边缘位置分别在牙龈上方(21例)、齐牙龈(21例)和牙龈下(23例)。修复完成后2年进行随访,采用牙龈指数、颈缘退缩及颈缘适合性作戴冠前后指标分析。结果:龈上和齐龈肩台组龈炎反应轻,分别有2例和3例;龈下肩台龈炎有6例,龈上肩台与齐龈肩台龈炎差异无统计学意义(P>0.05),龈下肩台与龈上肩台龈炎比较差异有统计学意义(P<0.05)。结论:龈上或齐龈肩台设计能较好的避免基牙龈炎。
Objective： The aim of this article was to evaluate the effects of three tooth preparations of PTM restoration. Methods： This design was assigned into 3 groups according to different gingival margin loca- tion. After two year restoration, we randomly analysed gingival index and margin fit. Results： The undergingival margin preparation of tooth has a highest incidence of gingivitis in three groups. 6 gingivitis were found in under-gingival margin. The up-gingival margin has 2 gingivitis. The level-gingival margin has 3 gingivitis. Conclusion： The up-gingival margin and level-gingival of configuration may prevent gingivitis.
出处
《新疆医科大学学报》
CAS
2005年第10期956-957,共2页
Journal of Xinjiang Medical University
