Say Esra Can, Koray Fatma, Tarim Berna, Soyman Mübin, Gülmez Turgut
Department of Operative Dentistry, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey.
Quintessence Int. 2004 Jan;35(1):56-60.
To evaluate the effect of two cavity disinfectants, a 2% chlorhexidine and a 1% benzalkonium chloride solution, on the shear and tensile bond strengths of dentin bonding systems to dentin.
Superficial dentin was exposed from 84 freshly extracted human third molars. The teeth were randomly assigned to two main groups according to the bonding agent used, either One Step or Optibond Solo. Each dentin bonding system had six test groups (three for shear, three for tensile testing), and each test group had a control and two cavity disinfectant groups. In the control groups, dentin bonding systems were applied after etching the dentin, whereas in the cavity disinfectant groups, dentin was conditioned and treated for 20 seconds with the disinfectants before applying the dentin bonding systems. A hybrid resin composite then was applied to all treated samples. After storage in distilled water at 37 degrees C for 24 hours, shear and tensile tests were performed. Data were analyzed using Kruskall-Wallis and Mann-Whitney U tests.
The mean shear and tensile bond strengths of One Step and Optibond Solo were not significantly different from each other, and the cavity disinfectants also had no significant effects on shear and tensile bond strength values versus the controls.
The results indicate that the use of 2% chlorhexidine and 1% benzalkonium chloride solutions as cavity disinfectants after etching the dentin did not affect the shear and tensile bond strengths of One Step and Optibond Solo.
评估两种窝洞消毒剂，即2%氯己定和1%苯扎氯铵溶液，对牙本质粘结系统与牙本质之间的剪切和拉伸粘结强度的影响。
从84颗新鲜拔除的人类第三磨牙中暴露表层牙本质。根据使用的粘结剂，将牙齿随机分为两个主要组，即一步法或Optibond Solo。每种牙本质粘结系统有六个测试组（三个用于剪切测试，三个用于拉伸测试），每个测试组有一个对照组和两个窝洞消毒剂组。在对照组中，牙本质粘结系统在酸蚀牙本质后应用，而在窝洞消毒剂组中，在应用牙本质粘结系统之前，先用消毒剂对牙本质进行预处理20秒。然后将混合树脂复合材料应用于所有处理过的样本。在37℃蒸馏水中储存24小时后，进行剪切和拉伸测试。使用Kruskal-Wallis和Mann-Whitney U检验分析数据。
一步法和Optibond Solo的平均剪切和拉伸粘结强度彼此无显著差异，与对照组相比，窝洞消毒剂对剪切和拉伸粘结强度值也无显著影响。
结果表明，在酸蚀牙本质后使用2%氯己定和1%苯扎氯铵溶液作为窝洞消毒剂不会影响一步法和Optibond Solo的剪切和拉伸粘结强度。
