베니어 포세린 두께가 지르코니아 세라믹 수복물의 파절 강도에 미치는 영향
Influence of fracture strength of zirconia ceramic restoration on thickness of veneer porcelain
김은지, 박미경,
소속 상세정보
김은지 ( Kim Eun-Ji ) - 부산가톨릭대학교 보건과학대학 치기공학과
박미경 ( Park Mi-Gyoung ) - 부산가톨릭대학교 보건과학대학 치기공학과
KMID : 1035320150420020149
Abstract
The purpose of this study was to examine fracture strength of zirconia ceramic restoration on thickness of veneer porcelain. Specimens were made from zirconia core and veneering ceramic 0.5 mm (ZR5), 0.7 mm (ZR7), and 1.0 mm (ZR10), respectively. Metal ceramic restorations (PFM) with metal core and veneering porcelain in thickness 0.5 mm and 1.0 mm, respectively were used as control. Fracture strength of the specimens was measured using a universal testing machine (UTM). Fracture surface of the specimens was observed. The fracture strengths of each specimen group were 2627.1 (± 559.4) N (ZR5), 3476.1 (± 116.6) N (ZR7), 3821.3 (± 594.1) N (ZR10), and 5273.5 (± 538.4) N (PFM). As a result, the fracture strength of zirconia ceramic group increased as the thickness of veneering porcelain increased. The fracture strength of zirconia ceramic group (2627.1-3821.3 N) was lower than that of metal ceramic group (5273.5 N). Failure pattern of each specimen was perpendicular fracture lines directly of the lingual slope of the buccal cusp. The entire fracture was observed in zirconia ceramic group and the partial fracture only showed in metal ceramic group.
키워드
All-ceramic; Fracture strength; Veneer porcelain thickness; Zirconia
원문 및 링크아웃 정보
등재저널 정보