Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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A Study on the Suitability of Cervical Margin According to Die Materials Used in Crown Prosthesis

치관보철물 제작시 사용되는 치형 재료에 따른 치경부 변인의 적합성에 관한 연구

  • Lee, In-Kyu (Dept. of Dental Laboratory Technology, WonKwang Health Science College The Graduate School of Health and Environment, Wonkwang University) ;
  • Choi, Un-Jae (Dept. of Dental Laboratory Technology, WonKwang Health Science College The Graduate School of Health and Environment, Wonkwang University) ;
  • Chung, Hee-Sun (Dept. of Dental Laboratory Technology, WonKwang Health Science College The Graduate School of Health and Environment, Wonkwang University)
  • 이인규 (원광보건대학 치기공과 원광대학교 보건환경대학원) ;
  • 최운재 (원광보건대학 치기공과 원광대학교 보건환경대학원) ;
  • 정희선 (원광보건대학 치기공과 원광대학교 보건환경대학원)
  • Published : 2000.12.10
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Abstract

The gaps between the die margin worked and the casting body were measured with an optical microscope and compared after making crown prosthetic materials using three kinds of die material - dental stone, extra hard stone, epoxy resin - used in crown prosthesis. The results are as follows : 1. All the gaps between the cast cervical margin and the casting bodies were relatively good regardless of die materials used with the gaps under $50{\mu}m$, the allowable limit. 2. The cervical margin suitability of epoxy resin die was the highest among the three kinds of die material with the suitability value of $30.28{\pm}12.67$. 3. Among the four surfaces(buccal, lingual, mesial, distal) of all the casting bodies, buccal surface was the highest in the cervical margin suitability with the value of $25.93{\pm}15.51$.

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