Kadoma Yoshinori
Department of Applied Functional Molecules, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Japan.
Dent Mater J. 2002 Jun;21(2):156-69. doi: 10.4012/dmj.21.156.
To develop a new surface treatment agent which improves the bond strength of adhesive resin to both non-precious and precious metals, experimental treatment agents containing both an adhesive bonding promoter for precious metals and one for non-precious metals were prepared by dissolving epithioalkyl methacrylate (EP3MA or EP8MA) and 10-methacryloyloxydecyl dihydrogen phosphate (MDP) in acetone. The surfaces of dental metals were treated by the treatment agents and metal specimens were butt-jointed together with MMA-PMMA resins. After 2,000 thermal cyclings in water at temperatures of 4 and 60 degrees C, tensile bond strengths were measured. The effectiveness of surface treatments was evaluated by tensile bond strengths and microscopic failure mode analysis after the tensile test. The combined treatment of EP3MA-MDP or EP8MA-MDP was used effectively for non-precious metals as well as precious metals, and was shown to be extremely effective compared with the single treatment of EP3MA, EP8MA, or MDP.
为开发一种能提高粘结性树脂与非贵金属和贵金属粘结强度的新型表面处理剂，通过将甲基丙烯酸环氧丙酯（EP3MA或EP8MA）和10 - 甲基丙烯酰氧基癸基磷酸二氢酯（MDP）溶解于丙酮中，制备了同时含有贵金属粘结促进剂和非贵金属粘结促进剂的实验性处理剂。用这些处理剂处理牙科金属表面，并将金属试样与甲基丙烯酸甲酯 - 聚甲基丙烯酸甲酯树脂对接在一起。在4℃和60℃的水中进行2000次热循环后，测量拉伸粘结强度。通过拉伸粘结强度和拉伸试验后的微观失效模式分析来评估表面处理的效果。EP3MA - MDP或EP8MA - MDP的联合处理对非贵金属和贵金属均有效，并且与EP3MA、EP8MA或MDP的单一处理相比，显示出极其有效的效果。
