Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Fracture Strength Analysis of Monolithic Zirconia Ceramic by Abutment Shape

지르코니아 단일구조 전부도재관의 지대치 형태에 따른 파절 강도

  • Kim, Won-Young (Department of Dental Laboratory Science, Graduated School, Catholic University of Pusan) ;
  • Hong, Min-Ho (Department of Dental Laboratory Science, Graduated School, Catholic University of Pusan)
  • 김원영 (부산가톨릭대학교 보건과학대학 치기공학과) ;
  • 홍민호 (부산가톨릭대학교 보건과학대학 치기공학과)
  • Received : 2014.09.11
  • Accepted : 2014.12.19
  • Published : 2014.12.30
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Abstract

Purpose: This study was performed fracture strength test by conducted change of abutment and coping shape for suggesting monolithic all ceramic crown which has thin thickness and superior strength of the occlusal surface. Methods: The specimens on the four kinds abutment was made according to thickness of occlusal surface and angle of axis surface. And All ceramic coping specimens of 6 different kinds was made by the CAD/CAM Method. Compression strength test using the UTM and the verification of compression-stress situation using the 3D finite element method were conducted under optimum conditions. Results: 516C specimen was showed the strongest compression-fracture strength, followed by 516FR, 516F45, specimens. Did not show significant differences between 516FR and 516F45. 516C of the universal testing machine the specimen's surface that are within the vertical load is small, finite element method of a uniformly distributed load, so the value received suggests otherwise. Conclusion: In conclusion, abutments of monolithic ziconia ceramic when having a same thickness of the occlusal, as the angle of occlusal edge is small, the stress is well dispersed and it can endure well in the fracture.

Keywords

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  1. Influence of fracture strength of zirconia ceramic restoration on thickness of veneer porcelain vol.42, pp.2, 2015, https://doi.org/10.14815/kjdm.2015.42.2.149