Saliva contamination of dentin bonding agents.
Saliva contamination of dentin bonding agents.
复制标题
牙本质粘合剂的唾液污染。
作者：
M. Johnson;J. Burgess;C. B. Hermesch;D. Buikema
本研究探讨了两种牙本质粘结剂的剪切粘结强度与牙本质时，在其应用程序的不同阶段与测量量的唾液污染。将80颗拔除的人类第三磨牙随机分为4组，每组10颗，用于测试牙本质粘结系统（All-Bond 2，Scotchbond Multi-Purpose）。A组样本未被污染;根据制造商的说明书应用底漆/粘合剂/树脂。在组B中，用新鲜的完整人唾液污染样品15秒，然后用无油空气强制干燥;这发生在涂底漆之后但在涂粘合剂之前。在C组中，污染发生在应用粘合剂之后，应用树脂之前。在D组中，在涂底漆时允许唾液污染表面，而不强行去除。然后对样本进行热循环、固定，并在7天时在Instron上进行剪切测试。获得以MPa为单位的粘合强度，并使用单因素ANOVA在P = 0.05的显著性水平下分析数据。虽然剪切粘结强度降低唾液污染的样本，有没有统计学上的显着差异组平均值。
This study examined the shear bond strength to dentin of two dentin bonding agents when contaminated with a measured amount of saliva at various stages in their application procedure. Eighty extracted human third molar teeth were randomly separated into four groups of 10 for each of the dentin bonding systems tested (All-Bond 2, Scotchbond Multi-Purpose). Group A specimens were not contaminated; primer/adhesive/resin were applied according to manufacturers' instructions. In Group B, samples were contaminated for 15 seconds with fresh whole human saliva, and then forcibly dried with a blast of oil-free air; this occurred after application of the primer but prior to application of adhesive. In Group C, contamination occurred after application of adhesive, prior to application of resin. In Group D, saliva was allowed to contaminate the surface as the primer was being applied, without forcible removal. Specimens were then thermocycled, mounted, and tested in shear on an Instron at 7 days. Bond strengths in MPa were obtained, and data were analyzed using a one-way ANOVA, at the P = 0.05 level of significance. Although shear bond strengths were lowered in saliva-contaminated samples, there was no statistically significant difference between group means.