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접착재의 종류에 따른 In-Ceram 도재관의 변연적합도와 파절강도에 관한 연구
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  • 접착재의 종류에 따른 In-Ceram 도재관의 변연적합도와 파절강도에 관한 연구
  • MARGINAL FIDELITY AND FRACTURE STRENGTH OF IN-CERAM CROWNS ACCORDING TO VARIOUS RESIN CEMENTS
저자명
임주환,Lim. Ju-Hwan
간행물명
대한치과보철학회지
권/호정보
1998년|36권 6호|pp.888-899 (12 pages)
발행정보
대한치과보철학회
파일정보
정기간행물|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

In-Ceram system is one of contemporary esthetic all ceramic restorations and has relatively high flexural strength. The purpose of this study was to evaluate the marginal fidelity according to type of resin cement and measuring position, and to evaluate fracture strength according to type of resin cement. In this study, twenty seven In-Ceram crowns were fabricated on the metal master die of prepared maxillary right central incisor and devided into three groups. All specimens were cemented with Panavia 21 (group PV), Super-bond (group SB) and Lute-it (group LI) on the metal master die. After cementation, specimens were measured marginal gap between the margin of the In-Ceram crown and the finishing line of metal master die by using a stereomicroscope (SZ-ST, Olympus, Japan). Marginal gaps were recorded at the labial, lingual, mesial and distal measuring points on the metal master die. For the mesurement of fracture strength, lingual surfaces of cemented specimens were loaded at a distance of 1mm from incisal edge by using the Autograph S-2000 (Shimadzu, Japan). The results of marginal fidelity and fracture strength were statistically analyzed with the SPSS version 8.0 programs. The results of this study were as follows: 1. In comparison of marginal fidelity according to the measuring points, there was no significant difference. 2. The marginal fidelity according to the type of resin cement was decreased in order of group $LI;(63.75{mu}m),;SB;(77.78{mu}m),;PV;(86.53{mu}m)$, and there was significant difference between group LI and PV (p<0.05). 3. The fracture strength according to the type of resin cement was showed descending order of group $LI;(60.00kg/cm^2),;SB;(56.80kg/cm^2),;PV;(56.11kg/m^2)$, but there was no significant difference.