Er:YAG 레이저를 이용한 교합면소와 열구 표면 처리 후 치면열구 전색재의 미세누출에 관한 평가

Abstract

Applicating pit and fissure sealant is the most universal and effective method to prevent occlusal dental caries. During the processing of applying the pit and fissure sealant, various methods have been developed to remove organic matter, plaque microflora and debris from the pit and fissure, increasing the maintenance rates of the sealant. Recently, the Er:YAG laser has been used as a new enamel surface treatment method. The purpose of this study is to evaluate whether enamel surface treatment with Er:YAG laser would be superior to other methods or not. The experiment was divided into four groups according to the treatment methods. : group 1, traditional acid-etching only, group 2, fissurotomy, and acid-etching, group 3, laser irradiation only, group 4, laser irradiation and acid-etching. 1. An experiment was done of a Er:YAG laser at 60mJ, 100mJ, 140mJ and 180mJ at 5Hz. Only the 100mJ laser irrradiation was similar to a acid-etched enamel in an SEM evaluation. 2. Fissurotomy and acid-etching method(group 2) and laser irradiation and acid-etching method(group 4) showed decreased microleakage when compared with acid-etching only and laser irradiation only. 3. No significant difference was found between fissurotomy and acid-etching method(group 2) versus laser irradiation and acid-etching method(group 4), and acid-etching only(group 1) versus laser irradiation only(group 3).