Effect of ageing on the bond strength of a permanent denture soft lining material
Effect of ageing on the bond strength of a permanent denture soft lining material
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DOI：
10.1046/j.1365-2842.2002.00946.x
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发表时间：
2002-10-01
影响因子：
2.9
通讯作者：
Jagger, D
中科院分区：
文献类型：
--
作者：
Al-Althel, M;Jagger, R;Jagger, D
Molloplast-B是一种广泛使用的长期热固化硅胶义齿软衬材料。该材料与聚甲基丙烯酸甲酯义齿基托材料的粘结失效是临床上经常遇到的问题。本研究的目的是研究长期浸泡在37℃+/-1℃的水中和50℃+-1℃的水中加速老化对这种义齿弹性衬里材料粘结到热固化义齿基托材料上的拉伸和剪切粘结强度的影响。在37℃+/-1℃的水中浸泡1周，对测得的粘结强力值没有显著影响。将试件在37℃+/-1℃的水中浸泡更长时间会导致测量的拉伸和剪切粘结强度显著降低。本研究证明，在37+/-1℃的水中长期老化导致的Molloplast-B结合强度的降低，可以通过在更高的温度下在水中老化来在较短的时间内实现。
Molloplast-B is a widely used, long-term, heat-cured silicone denture soft lining material. Adhesion failure of this material to poly (methyl methacrylate) denture base material is a problem that is encountered clinically. The purpose of this study was to investigate the effects of long-term immersion in water at 37 +/- 1 degreesC and of accelerated ageing in water at 50 +/- 1 degreesC on the tensile and shear bond strength values of this denture resilient lining material bonded to a heat-cured denture base material. Immersion in water for 1 week at 37 +/- 1 degreesC had no significant effect on the measured bond strength values. Longer immersion of specimens in water at 37 +/- 1 degreesC led to a significant reduction in the measured tensile and shear bond strengths. The present study has demonstrated that the reduction in Molloplast-B bond strength that occurs as a result of long-term ageing in water at 37 +/- 1 degreesC can be achieved in a shorter period of time by ageing the specimens in water at a higher temperature.