Mathey Y, Dubied P, Geering A H
Klinik für Zahnärztliche Prothetik, Universität Bern.
Schweiz Monatsschr Zahnmed. 1990;100(4):401-7.
The tensile strength and shearing strength of six bonding systems for the acrylic resin to metal bond were tested, unaltered and after cyclic thermal shock. The methods were 1) sandblasting with 50 mu and 2) 250 mu aluminium oxide granules, 3) electrolytic etching, 4) the RBS system, 5) the Sebond-MKV system, and 6) silicoating with the Kulzer Silicoater system. The materials to bond were Paladur, an autopolymerizing methacrylate, and the cobalt chromium alloy Wisil M. It was found that sandblasting gave good constant results depending on the size of the Al2O3 granules. RBS did not improve the tensile strength. The other tested systems improved the average values by a factor 3.5 in comparison to sandblasting. Silicoating showed a wide scattered range. The values of Sebond were increased and constant. After thermocycling the values were up to 30% better, but only when the recommended opaquer was not used. Sandblasting could give a good reference as baseline for comparative studies.
测试了丙烯酸树脂与金属结合的六种粘结系统在未经过和经过循环热冲击后的拉伸强度和剪切强度。测试方法如下：1）用50微米和250微米的氧化铝颗粒进行喷砂处理；2）电解蚀刻；3）RBS系统；4）Sebond-MKV系统；5）使用库尔泽硅涂层系统进行硅涂层处理。粘结材料为自聚甲基丙烯酸酯Paladur和钴铬合金Wisil M。结果发现，喷砂处理根据氧化铝颗粒大小能得到良好且稳定的结果。RBS系统并未提高拉伸强度。与喷砂处理相比，其他测试系统将平均值提高了3.5倍。硅涂层处理的结果分散范围较广。Sebond系统的值有所提高且稳定。热循环后，数值提高了多达30%，但前提是不使用推荐的遮色剂。喷砂处理可为比较研究提供良好的基准参考。
