Imamura G M, Reinhardt J W, Boyer D B, Swift E J
University of Iowa, Department of Operative Dentistry, Iowa City, IA 52242, USA.
Oper Dent. 1996 Nov-Dec;21(6):249-56.
The purpose of this study was to evaluate the effectiveness of various surface treatments used to enhance the bond strength of resin cements to two different laboratory-processed composite resins. Seventy specimens of a microfilled composite resin (Concept) and 70 specimens of a micro-hybrid composite resin (Herculite XRV) were fabricated in metal wells and subjected to heat (250 degrees F) and pressure (85 psi) curing. An additional 70 specimens of each material were fabricated in the shape of disks and also subjected to the same heat/pressure curing. All composite resins were subjected to one of seven treatment regimens. The like-treated specimens were then bonded together using dual-curing resin cement and a uniform seating force (106 gm). After 7 days, bonded specimens were thermocycled 1000 times at 5 and 55 degrees C, and debond shear strengths were determined on a Universal Testing Machine. The use of microabrasion (50 microns aluminum oxide at 60 psi) and ceramic layer deposition (30 microns aluminum oxide with a ceramic additive at 75 psi) consistently improved the shear bond strength of the resin cements to both composite resins. The other treatment combinations provided varying effects. In conclusion, microabrasion or ceramic layer deposition are preferred methods to enhance the bond of resin cements to composite resins.
本研究的目的是评估各种表面处理方法在提高树脂水门汀与两种不同实验室加工复合树脂粘结强度方面的有效性。在金属模具中制备了70个微填料复合树脂（Concept）样本和70个微混合复合树脂（Herculite XRV）样本，并进行加热（250华氏度）和加压（85磅力/平方英寸）固化。每种材料另外制备70个圆盘形状的样本，同样进行加热/加压固化。所有复合树脂均接受七种处理方案中的一种。然后使用双固化树脂水门汀和均匀就位力（106克）将经过相同处理的样本粘结在一起。7天后，对粘结样本在5摄氏度和55摄氏度下进行1000次热循环，并用万能试验机测定脱粘剪切强度。微研磨（60磅力/平方英寸下的50微米氧化铝）和陶瓷层沉积（75磅力/平方英寸下含陶瓷添加剂的30微米氧化铝）的使用始终提高了树脂水门汀与两种复合树脂的剪切粘结强度。其他处理组合产生了不同的效果。总之，微研磨或陶瓷层沉积是增强树脂水门汀与复合树脂粘结的优选方法。
