Woronko G A, St Germain H A, Meiers J C
National Naval Dental Center, Naval Dental School, Bethesda, MD 20889-5602, USA.
Oper Dent. 1996 May-Jun;21(3):116-21.
The purpose of this investigation was to determine the effect of dentin primers from Scotchbond Multi-Purpose, ProBond, All-Bond 2, and Syntac on the shear bond strength of composite resin to etched enamel. Two groups of extracted human molar teeth with flattened enamel surfaces (n = 12) were randomly assigned to each enamel/dentin bonding system. Following manufacturers' instructions enamel surfaces were etched, rinsed, and dried. Composite bonding procedures were conducted similarly in both groups for each enamel/dentin bonding system, except that in one of the two groups, dentin primer was applied prior to adhesive resin and composite placement. Samples were thermocycled and tested in shear until failure. Fracture analysis was performed on enamel surfaces with both light and scanning electron microscopy. Shear bond values (Mean +/- SD, MPa) were: Scotchbond Multi-Purpose unprimed 22.4 +/- 3.2, primed 17.9 +/- 5.9; ProBond unprimed 19.4 +/- 6.2, primed 18.3 +/- 3.3; All-Bond 2 unprimed 19.0 +/- 3.6, primed 17.3 +/- 3.0; and Syntac unprimed 26.2 +/- 9.0, primed 22.0 +/- 5.4. The only significant difference found between primed and unprimed groups was with Scotchbond Multi-Purpose, though there was a trend for primer application to decrease enamel bond strengths. Fracture surface analysis revealed that most failures were cohesive within the composite resin. These data suggest that the effect of primer on bonded composite resin to etched enamel is material specific.
本研究的目的是确定3M多功能粘结剂、普乐美粘结剂、全优粘结剂2和 Syntac 牙本质粘结剂对复合树脂与酸蚀釉质之间剪切粘结强度的影响。将两组釉质表面平整的拔除人类磨牙（n = 12）随机分配到每种釉质/牙本质粘结系统。按照制造商的说明对釉质表面进行酸蚀、冲洗和干燥。除了在两组中的一组中，在应用粘结树脂和复合树脂之前先涂抹牙本质粘结剂外，两组针对每种釉质/牙本质粘结系统的复合粘结程序均以类似方式进行。对样品进行热循环处理，并进行剪切测试直至破坏。使用光学显微镜和扫描电子显微镜对釉质表面进行断裂分析。剪切粘结值（平均值±标准差，MPa）分别为：3M多功能粘结剂未使用粘结剂 22.4±3.2，使用粘结剂 17.9±5.9；普乐美粘结剂未使用粘结剂 19.4±6.2，使用粘结剂 18.3±3.3；全优粘结剂2未使用粘结剂 19.0±3.6，使用粘结剂 17.3±3.0；Syntac未使用粘结剂 26.2±9.0，使用粘结剂 22.0±5.4。在使用粘结剂和未使用粘结剂的组之间发现的唯一显著差异是3M多功能粘结剂，不过使用粘结剂有降低釉质粘结强度的趋势。断裂表面分析表明，大多数破坏发生在复合树脂内部的内聚破坏。这些数据表明，粘结剂对粘结到酸蚀釉质上的复合树脂的影响具有材料特异性。
