中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (21): 3903-3906.doi: 10.3969/j.issn.1673-8225.2012.21.024

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

氧化锆全瓷修复体与氧化锆基台的适合性*★

李  伟1，杨建军2，王大山2，刘广源1，杨  振1，李  婷1   

  1. 1青岛大学医学院，山东省青岛市 266003；2青岛大学医学院附属医院口腔科，山东省青岛市 266003
  • 收稿日期:2012-02-11 修回日期:2012-03-10 出版日期:2012-05-20 发布日期:2012-05-20
  • 通讯作者: 杨建军，教授，主任医师，青岛大学医学院附属医院口腔科，山东省青岛市 266003 yjjqd@126.com
  • 作者简介:李伟★，男，1988年生，山东省莱芜市人，汉族，青岛大学在读硕士，主要从事口腔修复方面的研究。m77star@ 126.com
  • 基金资助:

    青岛市科技计划项目的部分研究内容(08-2-1-5-nsh)。

Fit accuracy between zirconia abutments and zirconia crowns  

Li Wei1, Yang Jian-jun2, Wang Da-shan2, Liu Guang-yuan1, Yang Zhen1, Li Ting1   

  1. 1Qingdao University Medical School, Qingdao  266003, Shandong Province, China; 2Department of Stomatology, Affiliated Hospital of Qingdao University Medical School, Qingdao  266003, Shandong Province, China
  • Received:2012-02-11 Revised:2012-03-10 Online:2012-05-20 Published:2012-05-20
  • Contact: Yang Jian-jun, Professor, Chief physician, Department of Stomatology, Affiliated Hospital of Qingdao University Medical School, Qingdao 266003, Shandong Province, China yjjqd@126.com
  • About author:Li Wei★, Studying for master’s degree, Qingdao University Medical School, Qingdao 266003, Shandong Province, China m77star@126.com
  • Supported by:

     the Science and Technology Plan Project of Qingdao City, No. 08-2-1-5-nsh*

PDF

396

被引次数

13

摘要：

背景：近年来，氧化锆基台的研制及临床应用成为众多学者的研究热点，氧化锆基台支持的氧化锆全瓷冠修复以其极佳的美学修复效果被临床医生及患者所认可，而基台与冠之间的适合性大小是种植修复的重要影响因素。
目的：研制氧化锆基台并研究其与氧化锆全瓷冠之间的适合性。
方法：选用纳米级氧化锆粉，采用注射成型工艺制作氧化锆基台。选取氧化锆基台和0sstem GSⅡ成品钛基台各5个，分为氧化锆基台-氧化锆全瓷冠组和钛基台-钴铬烤瓷冠组两组，氧化锆基台-氧化锆全瓷冠组采用CAD/CAM技术针对氧化锆基台制作氧化锆全瓷冠5个，钛基台-钴铬烤瓷冠组采用基台间隙帽铸造法在钛基台上制作钴铬合金烤瓷冠5个，分别将冠修复体就位与基台上，观察冠是否完全就位。然后采用硅橡胶印模法复制基台与冠之间的微间隙模型，将模型修整剖开，在扫描电镜下观察并采集微间隙图片，使用Digora Optime牙片数字成像软件测量微间隙值。
结果与结论：两组冠回位率均为100%。氧化锆基台-氧化锆全瓷冠组的轴面微间隙值和颈部微间隙值均小于钛基台-钴铬烤瓷冠组(P < 0.05)，提示氧化锆基台与氧化锆全瓷冠之间适合性良好，可以满足临床应用要求。
 

关键词: 氧化锆基台, 计算机辅助设计及计算机辅助制作, 氧化锆全瓷冠, 硅橡胶印模法, 适合性

Abstract:

BACKGROUND: In recent years, development of zirconia abutments has become a hotspot. The zirconia all-ceramic crowns and zirconia abutments restoration are recognized by many clinicians and patients because of their excellent aesthetic restoration effects, and the fit accuracy between them is a key factor for the implant restoration.
OBJECTIVE: To develop the zirconia abutments and to study the fitness of the interface between the zirconia abutments and zirconia crowns.
METHODS: Nanometer zirconia powder was used to manufacture zirconia abutments by injection molding. Five zirconia abutments and five titanium abutments were divided into two groups: Zirconia abutments-zirconia crowns group and titanium abutments-Co-Cr alloy based PFM crowns group. In the zirconia abutments-zirconia crowns group, five zirconia crowns were made upon the zirconia abutments by computer aided design and computer aided manufacturing. While in titanium abutments- Co-Cr alloy based PFM crowns group, five Co-Cr alloy based PFM crowns were made upon the titanium abutments by finished plastic cap casting. The finished crowns were inserted onto the abutments respectively to observe whether the crowns were inserted onto the abutments completely. Then the microgap models of the interface between abutments and crowns were made using silicone rubber impression, afterwards, to repair and cut these models. Microgap pictures were observed and collected by scanning electron microscope, and the microgap was tested by Digora Optime.
RESULTS AND CONCLUSION: The insertion rate of the two groups was both 100%. The microgaps in the axial surface and cervical part of zirconia abutments-zirconia crowns group were significantly lower than those of titanium abutments-Co-Cr alloy based PFM crowns group (P < 0.05). The interface between zirconia abutments and zirconia crowns shows a good fitness and provides a reliable scientific basis for the clinical application.

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