Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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A COMPARATIVE STUDY ON MARGINAL LEAKAGE OF CAD/CAM-FABRICATED CERAMIC INLAY

CAD/CAM으로 제작된 Ceramic Inlay의 변연누출에 관한 비교연구

  • Cho, Byeong-Hoon (Dept. of conservative Dentistly, College of Dentistry, Seoul National University) ;
  • Lee, Myung-Jong (Dept. of conservative Dentistly, College of Dentistry, Seoul National University) ;
  • Im, Mi-Kyung (Dept. of conservative Dentistly, College of Dentistry, Wonkwang University) ;
  • Lee, Kwang-Won (Dept. of conservative Dentistly, College of Dentistry, Chonbuk National University) ;
  • Son, Ho-Hyun (Dept. of conservative Dentistly, College of Dentistry, Seoul National University)
  • 조병훈 (서울대학교 치과대학 보존학교실) ;
  • 이명종 (서울대학교 치과대학 보존학교실) ;
  • 임미경 (원광대학교 치과대학 보존학교실) ;
  • 이광원 (전북대학교 치과대학 보존학교실) ;
  • 손호현 (서울대학교 치과대학 보존학교실)
  • Published : 1997.09.30
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Abstract

To compare the marginal leakage of CAD/CAM-fabricated ceramic inlay, gold inlay and amalgam, forty extracted caries-free premolars were prepared with Class II MO cavity design. The teeth were divided into four groups of ten samples each. Group 1 was restored with CAD/CAM-fabricated ceramic inlays cemented with Scotchbond Resin Cement / Scotchbond Multi-purpose plus. Group 2 was restored with gold inlays cemented with Scotchbond Resin Cement / Scotchbond Multi-purpose plus. Group 3 was restored with gold inlays cemented with zinc phosphate cement. And, Group 4 was restored with amalgam. All samples were thermocycled, and stored in 1 % methylene blue. Marginal leakage was examined at four margins, that is, occlusal distal, priximal gingival, occlusal facial and occlusal lingual margins from sectioned samples under stereomicroscope(x15). The results were as follows : 1. Group 1 and 2 showed no statistically significant difference among marginal leakage at all four examined margins(p>0.05). 2. Group 3 and 4 showed significant marginal leakage at proximal gingival margin compared with other margins(p<0.05). 3. Significantly increased marginal leakage at priximal gingival, occlusal facial and occlusal lingual margins in group 3 were observed compared with other groups (p<0.05).

Keywords

Acknowledgement

Supported by : 서울대학병원