Cement Gap에 따른 Zirconia Crown의 파절강도 비교
A Study on the Fracture Strength of the Cement Gap
김남중, 이충재, 곽운선,
소속 상세정보
김남중 ( Kim Nam-Joong ) - 신한대학교 치기공학과
이충재 ( Lee Chung-Jae ) - 신한대학교 치기공학과
곽운선 ( Kwak Woon-Seon ) - 단국대학교 보건복지대학원 구강보건학과
KMID : 0362120160380040299
Abstract
Purpose: This research is conducted for better clinical test of Zirconia as we find out the fracture strength difference of Zirconia on cement gaps of full Crown that made use of Zirconia which is somewhat being used in recent dental technology.
Methods: We produced each nine of Zirconia Crown of Zirconia fracture cement gaps A group(0.03 mm), B group(0.05 mm), C group(0.08 mm) on cement gaps by use of CAD/CAM, and compared the results. We could end up getting conclusions as following.
Results: There was fracture strength difference per cement gaps but no impact(P<0.05). There was difference between 1.962 0.259 from group A and 2.005 0.367 from group B, but no impact(P<0.05). There was difference between 1.962 0.259 from group A and 2.478 0.331 from group C, but it s hard to be considered as an impact(P<0.05).
Conclusion: Because of the hight pressure 0.08 mm is fractured and Margin has a lot of empty space due to gap for 0.08 mm. To identify the difference between 0.08 mm and 0.05 mm, 0.08 mm is selected as a gap. Therefore when it comes to using 0.05 mm authentically 0.05 mm is quite practical to use as a gap.
키워드
Cad/Cam ; Cement gap ; Fracture strength ; Zirconia
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