Matsumura H, Yanagida H, Tanoue N, Atsuta M, Shimoe S
Department of Fixed Prosthodontics, School of Dentistry, Nagasaki University, Nagasaki, Japan.
J Prosthet Dent. 2001 Sep;86(3):315-9. doi: 10.1067/mpr.2001.114823.
Although adequate surface preparation is indispensable to achieve a consistent and durable bond between resin composite materials and the metal substructures of veneered restorations, information on the bonding performance of current metal adhesive systems is limited.
The purpose of this study was to evaluate the surface preparation effects of 4 metal conditioners and 1 adhesive system on bonding between a prosthetic resin composite veneering material and a gold casting alloy.
Four primers containing sulfur derivative monomer and designed for conditioning noble metal alloys (Alloy Primer, Infis Opaque Primer, Metal Primer II, and Metaltite) and a surface modification technique (Siloc) were assessed. Cast disk specimens made of gold alloy (Pontor LFC) were either primed with 1 of the 4 primers or treated with the Siloc system and bonded with a light-activated prosthetic resin composite material (New Metacolor Infis). Control specimens were also prepared without the use of a bonding agent. Shear bond strengths were determined before and after thermocycling (20,000 cycles) for evaluation of bond durability.
All of the primed and Siloc-treated groups showed improved 24-hour shear bond strengths compared with the control group. After thermocycling, the groups either primed with the Metaltite conditioner or treated with the Siloc system exhibited the highest mean shear bond strengths.
The Metaltite conditioner and Siloc system each represent a useful method for improving the bond between the gold alloy and resin composite material tested.
尽管进行充分的表面处理对于在树脂复合材料与贴面修复体的金属亚结构之间实现一致且持久的粘结是必不可少的，但有关当前金属粘结系统粘结性能的信息有限。
本研究的目的是评估4种金属调节剂和1种粘结系统对修复用树脂复合材料贴面材料与金铸造合金之间粘结的表面处理效果。
评估了4种含硫衍生物单体并设计用于贵金属合金预处理的底漆（合金底漆、Infis不透明底漆、金属底漆II和Metaltite）以及一种表面改性技术（Siloc）。由金合金（Pontor LFC）制成的铸盘标本，要么用4种底漆中的1种进行预处理，要么用Siloc系统处理，然后与光固化修复用树脂复合材料（New Metacolor Infis）粘结。还制备了不使用粘结剂的对照标本。在热循环（20,000次循环）前后测定剪切粘结强度，以评估粘结耐久性。
与对照组相比，所有预处理组和Siloc处理组的24小时剪切粘结强度均有所提高。热循环后，用Metaltite调节剂预处理或用Siloc系统处理的组表现出最高的平均剪切粘结强度。
Metaltite调节剂和Siloc系统均是改善所测试的金合金与树脂复合材料之间粘结的有用方法。
