Hafez Marwa Abdel, Elkateb Mona, El Shabrawy Sonia, Mahmoud Amel, El Meligy Omar
J Clin Pediatr Dent. 2017;41(1):53-61. doi: 10.17796/1053-4628-41.1.53.
To evaluate the microleakage of composite restorations following Papain-based chemo-mechanical caries removal compared to the conventional drilling method. The characteristic of the hybrid layer was also studied using scanning electron microscopy.
The sample included thirty freshly extracted and exfoliated primary molars with open proximal carious dentin lesions. Teeth were divided into two equal groups, according to method of caries removal. Following caries removal, cavity preparations were restored with composite resin. After thermocycling, teeth were sealed apically and coated with nail polish except the surface of restorations and the surrounding 1mm. Teeth were immersed in basic fuschin dye solution, then they were sectioned mesiodistally. The extent of dye penetration was detected using a light stereomicroscope. After microleakage test, the resin/dentin interface was examined using scanning electron microscopy.
There was no significant difference in the degree of leakage between both groups. In the Papacarie group, longer and numerous resin tags were observed with statistically significant thicker hybrid layer than those following the drilling method. However, there was no significant difference between the diameters of resin tags of both groups.
Papacarie does not adversely affect the microleakage of composite restorations and provides a suitable surface for bonding.
与传统钻孔方法相比，评估基于木瓜蛋白酶的化学机械去龋后复合树脂修复体的微渗漏情况。还使用扫描电子显微镜研究了混合层的特征。
样本包括30颗新拔除和脱落的患有近中龋性牙本质病变的乳磨牙。根据去龋方法将牙齿分为两组。去龋后，用复合树脂修复窝洞。热循环后，将牙齿根尖密封，除修复体表面及其周围1mm外，均涂上指甲油。将牙齿浸入碱性品红染料溶液中，然后沿近远中方向切片。使用光学立体显微镜检测染料渗透程度。微渗漏测试后，使用扫描电子显微镜检查树脂/牙本质界面。
两组之间的渗漏程度无显著差异。在木瓜蛋白酶去龋组中，观察到树脂突更长且数量更多，混合层厚度在统计学上显著厚于钻孔方法组。然而，两组树脂突的直径无显著差异。
木瓜蛋白酶去龋对复合树脂修复体的微渗漏没有不利影响，并为粘结提供了合适的表面。
