华西口腔医学杂志

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金属烤瓷修复体两种牙体预备形式的临床性能比较

李玉玲,王庆涛,兰利冲,林春华   

  1. 广西医科大学附属口腔医院 修复科,广西 南宁530021
  • 收稿日期:2004-08-25 修回日期:2004-08-25 出版日期:2004-08-20 发布日期:2004-08-20
  • 通讯作者: 李玉玲,Tel: 0771-5358349
  • 作者简介:李玉玲(1954-),女,山东人,副教授

Clinical Evaluation of Two Tooth Preparation Methods of Metal-porcelain Restoration

LI Yu-ling,WANG Qing-tao,LAN Li-chong,LIN Chun-hua   

  1. Dept.ofProsthodontics,School ofStomatology,Guangxi Medical University,Nanning530021, China
  • Received:2004-08-25 Revised:2004-08-25 Online:2004-08-20 Published:2004-08-20

摘要:

目的 比较金属烤瓷修复体牙体颈部预备为90°肩台式和龈下无肩台式两种形式的临床性能。方法 将需做金属烤瓷冠修复的患者,根据牙体缺损情况分为2组,牙体唇侧颈缘预备为90°肩台式40例,制作金属烤瓷冠 55个;龈下无肩台式40例,制作金属烤瓷冠52个。在修复完成后1年、2年进行随访,检查修复体菌斑指数、牙龈指数、颈缘变色及颈缘适合性。结果 2组结果比较表明4项指标皆无统计学差异。结论 将牙体唇侧颈缘设计为龈下无肩台形式制作金属烤瓷修复体也能满足临床要求。

关键词: 金属烤瓷, 牙体预备, 龈边缘

Abstract:

Objective To evaluate the clinical performance of the two configurations of gingival margin preparation of tooth. Methods The cases in this study were divided into two groups according to different tooth defects. Each group consisted of 40 cases. One group′s gingival margin configurationwas 90°shoulder, the otherwas under-gingival non-shoulder. The clinical perfor- mance of these restorationswas followed up for 1 year and 2 years. The evaluators examined the restorations for plaque index, gin- gival index, marginal discolor and marginal fit.Results There was no significant difference in the evaluators between the two groups.Conclusion The under-gingival non-shouldermargin configuration of porcelain fused to mental should be used for clinical application compared with the 90°shoulder one in certain circumstance.

Key words: porcelain fused to mental, toothpreparation, margin