人工齒牙우식법을 利用한 數種 充塡材의 邊緣對鎖效果 比較 = Comparison of the Marginal Sealing Effect of Several Filling Materials using Artificial Caries Technique

다국어 초록 (Multilingual Abstract)

The purpose of the study was to compare the marginal sealing effect of amalgam, composite resin and glass ionomer cement restorations placed into cavity in root, by means of artificial caries technique
The 100 extracted human 3rd molar teeth were selected, and simple cavities were prepared on root surfaces. The prepared cavities were filled with Optaloy Ⅱ, Optaloy Ⅱ-Vitrabond, Silux Plus, Silux Plus-Vitrabond and Ketac-Fil.
All specimens were immersed in lactate buffer solution(pH 4.5) at 37℃ for 15 days. The 80㎛thick sections of restored teeth were prepared and examined under crossed polars of a polarizing microscope, and the depths of the demineralized lesions were measured by means of a calibrated eyepiece graticule.
The results were as follows:
The marginal leakage was the least in Ketac-Fil group(p<0.05) and there was no significant difference in marginal leakage between Optaloy Ⅱ group and Silux plus group(p>0.05).
The marginal leakage was reduced with Vitrabond base in Silux Plus groups(p<0.05), but no significant difference in marginal leakage was observed between Optaloy Ⅱ groups(p>0.05).