수종Ceromer의 변역적합도와 파절강도에 관한 비교연구
A study on the marginal fidelity and the fracture strength of ceromers
장희원, 조인호, 임헌송, 이종혁,
소속 상세정보
장희원 ( Chang Hee-Won ) - 국립경찰병원 치과보철과
조인호 ( Cho In-Ho ) - 단국대학교 치과대학 치과보철학교실
임헌송 ( Lim Heon-Song ) - 단국대학교 치과대학 치과보철학교실
이종혁 ( Lee Jong-Hyuk ) - 단국대학교 치과대학 치과보철학교실
KMID : 0362420050430040438
Abstract
Statement of problem: The use of Ceromer is increasing in dentistry. But, the research of Ceromer has not been conducted much.
Purpose: This study was to evaluate the marginal fidelity and internal adaptation according to marginal position.
Materials & Methods: In this study 60 resin crowns were fabricated. The measurements of the marginal fidelity were carried out using stereomicroscope SZ-40(R)(Olympus, Japan) and the measurements of fracture strength were done using Instron 8871(R)(Instron Co., U.S.A.) at a cross head speed of 1mm/min. All of the measurements were statistically analyzed by ANOVA test, multiple range test and Weibull analysis. Statistical significance was set in advance at the probability level of less than 0.05. All of the measurements were analyzed with Window SPSS(R) Version 10.0 soft ware for the personal computer.
Results: 1. There were no statistical differences of the marginal fidelity between Targis(R) and Tescera(R), but difference between these two and BelleGlass(R) according to materials. 2. There were no statistical differences of the marginal fidelity between no fiber group and fiber group. There were no interactions between each maerial and with/without fiber group in the marginal fidelity. 3. There were statistical differences of the fracture strength between Tescera. and BelleGlass(R), but no statistical differences of the fracture strength between Targis(R) and Tescera(R), Targis(R) and BelleGlass(R) according to materials. 4. There were statistical differences of the fracture strength between no fiber group and fiber group. There were no interactions between each material and with/without fiber group in the fracture strength. 5. When comparing the fracture surface, no fiber group showed the resin which were fractured at the labial surface and separated from the adhesion surface. In fiber group, the fractures took a place in resin compartments.
Conclusion: The marginal fidelity and the fracture strength were clinically acceptable. From these results, Targis(R) and Tescera(R) were superior than BelleGlass(R) in the marginal fidelity. But, when applying these resin crowns in clinic, more careful consideration is needed and further study is recommended.
키워드
Targis(R);Tescera(R);BelleGlass(R);marginal fidelity;fracture strength
원문 및 링크아웃 정보
등재저널 정보