Terkla L G, Mitchem J C, Mahler D B
Department of Dental Materials Science, Oregon Health Sciences University, School of Dentistry, Portland 97201-3097.
Am J Dent. 1991 Oct;4(5):214-8.
The purpose of this study was to measure the bond strength of resin dentin bonding agents under clinically-simulated conditions. Using extracted human teeth subjected to physiologic-pulpal fluid pressure, occlusal cavity preparations were restored with three dentin bonding agent/resin composite combinations. The teeth were sectioned to remove the occlusal enamel and upper part of the restoration. The force required to remove the remainder of the restoration was converted to a dentin bond strength value. The effect of incremental placement of the resin composite also was investigated. Scotchbond 2 showed better bonding than Gluma or Scotchbond Dual Cure, and Gluma showed better bonding than Scotchbond Dual Cure. Although all materials showed better bonding with the use of three increments of resin composite versus one, only in the case of Scotchbond 2 was there a statistically-verified difference.
本研究的目的是在临床模拟条件下测量树脂牙本质粘结剂的粘结强度。使用承受生理牙髓液压的拔除人类牙齿，用三种牙本质粘结剂/树脂复合材料组合修复咬合面洞形预备体。将牙齿切片以去除咬合面釉质和修复体的上部。去除修复体其余部分所需的力被转换为牙本质粘结强度值。还研究了树脂复合材料分层放置的效果。Scotchbond 2显示出比Gluma或Scotchbond Dual Cure更好的粘结效果，并且Gluma显示出比Scotchbond Dual Cure更好的粘结效果。尽管与使用一次树脂复合材料增量相比，所有材料在使用三次树脂复合材料增量时都显示出更好的粘结效果，但只有在Scotchbond 2的情况下存在统计学验证的差异。
