Singla Ruchi, Bogra Poonam, Singal Bhawana
Department of Conservative Dentistry and Endodontics, Dr. H.S.J. Institute of Dental Sciences and Hospital, Chandigarh, India.
J Conserv Dent. 2012 Jul;15(3):233-6. doi: 10.4103/0972-0707.97944.
The purpose of this study was to compare the microleakage of traditional composite (Charisma/Gluma Comfort Bond) and self-priming resin (Embrace Wetbond).
Standardized Class V cavities partly in enamel and cementum were prepared in 20 extracted human premolars. Teeth were divided into two groups. Group 1 was restored with Charisma/Gluma Comfort Bond and Group 2 with Embrace Wetbond. The specimens were stored in distilled water at room temperature for 24 h and then subjected to 200 thermocycles at 5°C and 55°C with a 1 min dwell time. After thermocycling teeth were immersed in a 0.2% solution of methylene blue dye for 24 h. Teeth were sectioned vertically approximately midway through the facial and lingual surfaces using a diamond saw blade. Microleakage was evaluated at enamel and cementum surfaces using 10 × stereomicroscope. The statistical analysis was performed using Wilcoxon signed-rank test.
Wetbond showed less microleakage at occlusal and gingival margins as compared with Charisma/Gluma Comfort Bond and the results were statistically significant (P < 0.05).
Class V cavities restored with Embrace Wetbond with fewer steps and fewer materials offers greater protection against microleakage at the tooth restorative interface.
本研究的目的是比较传统复合树脂（卡瑞斯玛/古玛舒适粘结剂）和自酸蚀粘结树脂（爱必适湿粘结剂）的微渗漏情况。
在20颗拔除的人类前磨牙上制备部分位于牙釉质和牙骨质的标准V类洞。将牙齿分为两组。第1组用卡瑞斯玛/古玛舒适粘结剂修复，第2组用爱必适湿粘结剂修复。标本在室温下于蒸馏水中储存24小时，然后在5°C和55°C下进行200次热循环，每次保持1分钟。热循环后，将牙齿浸入0.2%的亚甲蓝染料溶液中24小时。使用金刚石锯片将牙齿沿颊舌面大约在中间位置垂直切开。使用10倍体视显微镜评估牙釉质和牙骨质表面的微渗漏情况。采用Wilcoxon符号秩检验进行统计分析。
与卡瑞斯玛/古玛舒适粘结剂相比，爱必适湿粘结剂在咬合面和牙龈边缘显示出较少的微渗漏，结果具有统计学意义（P < 0.05）。
用爱必适湿粘结剂修复V类洞步骤更少、材料更少，在牙齿修复界面提供了更好的防微渗漏保护。
