자가 접착형 레진 시멘트를 코어재로 사용 시 미세누출

Abstract

ABSTRACT Microleakage of self-adhesive resin cement used as core material

Yoo, Mi-Sun Advisor : Prof. Min, Jeong-Bum, D.D.S., Ph.D. Department of Dentistry Graduate School of Chosun University

This study evaluated the marginal leakage around Class-I cavity restored with Self-adhesive resin cement and core build-up material. Standardized class-I cavities were prepared on 78 caries-free extracted human premolars. Prepared teeth were randomly assinged to three groups and restored using one of the self adhesive resin cements and core build up material. 1) RelyX Unicem (Group1) 2) Maxcem (Group2) 3) Luxabond + Luxacore (Group3) The specimens were stored in distilled water for 24 hours, followed by immersion in 2 % methylene blue dye for 24 hours. The teeth were sectioned longitudinally and evaluated for microleakage under stereomicroscope. The degree of leakage was scored according to an ordinal ranking system (0-4). The data were statistically analyzed by Kruskal Wallis nonparametric test and Mann-Whitney U Tests (p = 0.05).

The results were as follows: 1. Mean microleakage scores for groups were as follow: 2.7 (unicem), 4 (maxcem), 3.1 (luxacore) and there were significant difference between groups. 2. Maxcem showed the largest degree of microleakage, and there were significant difference between Maxcem and other groups. 3. RelyX Unicem showed the smallest dgree of microleakage, and there were no significant difference between Unicem and Luxacore.

In the respect of microleakage, there is possibility of using RelyX Unicem as core material, but it shoud be applied with caution to the clinical situation. The final evaluation of material should be performed in long-term clinical studies.