中国医科大学学报

中国医科大学学报
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中国医科大学学报 ›› 2017, Vol. 46 ›› Issue (10): 921-923.doi: 10.12007/j.issn.0258‐4646.2017.10.014

• 论著 • 上一篇    下一篇

聚合度和隙料厚度对计算机辅助设计与制作全瓷冠边缘和 内部适合性的影响

张亚君,屈直   

  1. 锦州医科大学附属第二医院修复科,辽宁 锦州 121000
  • 收稿日期:2017-01-19 出版日期:2017-10-30 发布日期:2017-10-16
  • 通讯作者: 屈直 E-mail:quzhi7777@sina.com
  • 作者简介:张亚君(1988 -),女,硕士研究生

Influence of Convergence Angle and Cement Space on Margin and Internal Adaptation of CAD/CAM All-ceramic Crowns

ZHANG Yajun,QU Zhi   

  1. Department of Prosthodontics,The Second Affiliated Hospital of Jinzhou Medical University,Jinzhou 121000,China
  • Received:2017-01-19 Online:2017-10-30 Published:2017-10-16

摘要: 目的 探讨聚合度和隙料厚度对计算机辅助设计与制作(CAD/CAM)全瓷冠边缘适合性的影响。方法 聚甲基丙烯酸甲酯(PMMA)树脂代型,分为A组(2°)和B组(4°),每组30个,每组又分3个亚组,每亚组10个,在PMMA树脂代型上制作CAD/CAM 全瓷基底冠,隙料厚度设为40 μm、60 μm和80 μm。采用双色硅橡胶印模技术复制全瓷冠的内部间隙,在金相显微镜下采集边缘 间隙的图像。用Micro-image Analysis软件测量边缘间隙,将所得数据用SPSS 20.0软件进行分析。结果 隙料厚度相同时,2°和4° 之间的差异有统计学意义。结论 隙料厚度60μm,聚合度4°时,全瓷冠的适合性最好。

关键词: 全瓷冠, 聚合度, 隙料厚度, 边缘适合性

Abstract: Objective To study the influence of the convergence angle and cement space on the fit of CAD/CAM all-ceramic crowns. Methods The PMMA resin was produced in two groups,group A(2 degrees)and group B(4 degrees),30 in each group,and each group was divided into 3 sub-groups A1,A2,A3;or B1,B2,B3. Each subgroup included 10 patients with a CAD/CAM all-ceramic crown with PMMA resin generation type,but the cement space was 40μm,60μm,or 80μm. The internal clearance edge of the double color silicone rubber impression reproduction technology of the all-ceramic crown was observed under the microscope. Analysis Micro-image software was used to measure the edge gap,and the resulting data were analyzed using SPSS 20.0 software. Results When the cement space is the same,the difference between 2 degrees and 4 degrees was statistically significant. Conclusion The fit is the best when the cement space is 60μm and the convergence angle space is 4 degrees.

Key words: all-ceramic crown, convergence angle, cement space, marginal fit

中图分类号: 

  • R783
[1] 曹程,李平,屈直. 粘接剂排溢沟对后牙氧化锆全冠适合性的影响[J]. 中国医科大学学报, 2017, 46(10): 882-886.
[2] 霍欢,殷家悦,艾红军. 不同印模方式对全冠边缘及内部适合性的影响[J]. 中国医科大学学报, 2016, 45(7): 656-658.
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