Effects of two different restorative materials on microleakage of class v cavities

Abstract

Purpose: The aim of this study is to evaluate the micro-leakages of a composite restorative material and a high viscosity glass ionomer cement restorative material in class V cavities at in-vitro conditions. Materials and Methods: In this study, 30 extracted, caries-free human superior premolar teeth were used. Class V cavities were prepared on buccal surfaces of all teeth which were standardized to be 1mm below from the enamel-cement session. Teeth were randomly separated into two groups, each consists of 15 teeth. In first group the prepared cavities was filled with a composite resin (S3 Bond + Clearfil Esthetic; Kuraray, Tokyo, Japan). And in the second group the cavities was filled with high flowable glass ionomer cement (Fuji IX GP; GC, Tokyo, Japan). The restorative materials polimerizated with using a LED (Elipar Freelight; 3M ESPE, Seefeld, Germany) light source. All specimens were stored in distilled water for 24 hours. And all specimens were subjected to 10000 times thermal cycles of 5 degrees C/55 degrees C for 1 minute each. Teeth covered with nail polish except 1mm circumference of restorations and stored in %1 methylene blue solution for 24 hours. After washing, the teeth were sectioned perpendicular at bucco-lingual direction and evaluated under ax15 stereomicroscope. The scores were statistically analyzied using the Kruskal-Wallis and the Mann Whitney U tests. Findings: There were not any statistical difference between the experimental groups (p>0.05). In group 1, cervical and occlusal micro-leakage scores were statistically different (p<0.05). Although in group 2, there were no statistical differences between the cervical and occlusal microleakage scores. Results: The both restorative materials used in class V cavities, had been found successful in micro-leakage evaluation.