Fortin D, Swift E J, Denehy G E, Reinhardt J W
Départment de Restauration, Université de Montréal, Canada.
Dent Mater. 1994 Jul;10(4):253-8. doi: 10.1016/0109-5641(94)90070-1.
The purpose of this in vitro study was to evaluate shear bond strengths and microleakage of seven current-generation dentin adhesive systems.
Standard box-type Class V cavity preparations were made at the cemento-enamel junction on the buccal surfaces of eighty extracted human molars. These preparations were restored using a microfill composite following application of either All-Bond 2 (Bisco), Clearfil Liner Bond (Kuraray), Gluma 2000 (Miles), Imperva Bond (Shofu), OptiBond (Kerr), Prisma Universal Bond 3 (Caulk), Scotchbond Multi-Purpose (3M), or Scotchbond Dual-Cure (3M) (control). Lingual dentin of these same teeth was exposed and polished to 600-grit. Adhesives were applied and composite was bonded to the dentin using a gelatin capsule technique. Specimens were thermocycled 500 times. Shear bond strengths were determined using a universal testing machine, and microleakage was evaluated using a standard silver nitrate staining technique.
Clearfill Liner Bond and OptiBond, adhesive systems that include low-viscosity, low-modulus intermediate resins, had the highest shear bond strengths (13.3 +/- 2.3 MPa and 12.9 +/- 1.5 MPa, respectively). Along with Prisma Universal Bond 3, they also had the least microleakage at dentin margins of Class V restorations.
No statistically significant correlation between shear bond strength and microleakage was observed in this study. Adhesive systems that include a low-viscosity intermediate resin produced the high bond strengths and low microleakage. Similarly, two materials with bond strengths in the intermediate range had significantly increased microleakage, and one material with a bond strength in the low end of the spectrum exhibited microleakage that was statistically greater. Thus, despite the lack of statistical correlation, there were observable trends.
本体外研究的目的是评估七种新一代牙本质粘结系统的剪切粘结强度和微渗漏情况。
在80颗拔除的人磨牙颊面的牙骨质-釉质界处制备标准盒状V类洞。在应用All-Bond 2（Bisco公司）、Clearfil Liner Bond（可乐丽公司）、Gluma 2000（迈尔斯公司）、Imperva Bond（松风公司）、OptiBond（登士柏公司）、Prisma Universal Bond 3（卡沃公司）、Scotchbond Multi-Purpose（3M公司）或Scotchbond Dual-Cure（3M公司）（对照）后，用微填料复合树脂修复这些洞。将这些牙齿的舌侧牙本质暴露并打磨至600目。应用粘结剂，并使用明胶胶囊技术将复合树脂粘结到牙本质上。标本进行500次热循环。使用万能试验机测定剪切粘结强度，并使用标准硝酸银染色技术评估微渗漏情况。
Clearfil Liner Bond和OptiBond这两种包含低粘度、低模量中间树脂的粘结系统具有最高的剪切粘结强度（分别为13.3±2.3MPa和12.9±1.5MPa）。与Prisma Universal Bond 3一起，它们在V类修复体的牙本质边缘处的微渗漏也最少。
本研究中未观察到剪切粘结强度与微渗漏之间存在统计学上的显著相关性。包含低粘度中间树脂的粘结系统产生了高粘结强度和低微渗漏。同样，两种粘结强度处于中等范围的材料微渗漏显著增加，而一种粘结强度处于低范围的材料表现出统计学上更大的微渗漏。因此，尽管缺乏统计相关性，但仍有可观察到的趋势。
