Janda R, Roulet J-F, Latta M, Damerau G
Heinrich-Heine-University Düsseldorf, Medical Faculty, Centre of Dentistry, Moorenstr. 5, Geb. 18.73, D-40225 Düsseldorf, Germany.
Dent Mater. 2007 Feb;23(2):193-7. doi: 10.1016/j.dental.2006.01.009. Epub 2006 Feb 21.
Resin to metal bond strength of two commercial and one experimental metal-resin bonding system for crown and bridge veneer composites was evaluated.
All specimens were prepared and tested according to ISO 10477 Amendment 1. A high precious alloy (HPA), a Co/Cr-alloy (Co/Cr) and pure titanium (Ti) were wet-ground to a final surface finish of 800 grit and air-dried. Twenty specimens of each metal were treated with Rocatec (RO), 20 with a Silano-Pen (SP), and 20 with the experimental spark-erosion (SE) bonding system. A light-curing opaque and a crown and bridge veneer composite were applied to each metal specimen. Ten specimens of each metal and bonding system were stored in water for 24h at 37 degrees C, 10 were thermocycled (TC) 5000 times in a water-bath between +5 and +55 degrees C prior to measuring shear bond strength (SBS). Scanning electron microscopy (SEM) was used to examine the treated metal surfaces.
After 24h SE generated significantly higher SBS values on Ti than RO (p<0.05). SP revealed the highest SBS for Co/Cr. After TC significant decreases occurred for RO on HPA, for SP on Co/Cr and Ti, and for SP on Ti. SE revealed the highest mean bond values for all metals. These results and SEM proved that no sandblasting is required for SE to obtain good bond strength.
The experimental spark-erosion bonding system is an easy and very effective method for surface-treating alloys to obtain high SBS values for crown and bridge veneer composites.
评估两种市售和一种实验性的用于冠桥贴面复合材料的金属 - 树脂粘结系统的树脂与金属的粘结强度。
所有试样均按照ISO 10477修订版1进行制备和测试。一种高贵金属合金（HPA）、一种钴铬合金（Co/Cr）和纯钛（Ti）经湿磨至最终表面光洁度为800目并风干。每种金属的20个试样用Rocatec（RO）处理，20个用硅烷笔（SP）处理，20个用实验性电火花腐蚀（SE）粘结系统处理。将一种光固化不透明材料和一种冠桥贴面复合材料应用于每个金属试样。每种金属和粘结系统的10个试样在37℃水中储存24小时，10个在测量剪切粘结强度（SBS）之前在+5至+55℃的水浴中进行5000次热循环（TC）。使用扫描电子显微镜（SEM）检查处理过的金属表面。
24小时后，SE在Ti上产生的SBS值显著高于RO（p<0.05）。SP在Co/Cr上显示出最高的SBS。热循环后，HPA上的RO、Co/Cr和Ti上的SP以及Ti上的SP的SBS值显著降低。SE在所有金属上显示出最高的平均粘结值。这些结果和SEM证明，SE无需喷砂即可获得良好的粘结强度。
实验性电火花腐蚀粘结系统是一种简单且非常有效的合金表面处理方法，可获得用于冠桥贴面复合材料的高SBS值。
