Jagger R G
J Oral Rehabil. 1978 Apr;5(2):151-7. doi: 10.1111/j.1365-2842.1978.tb01208.x.
The properties of a denture base material may be modified by altering both the temperature and the time of heating during the curing cycle. In this study a polymethylmethacrylate denture base containing no crosslinking agent was polymerised using four different curing cycles. The structure of the materials so obtained was investigated by an acid etching technique. The materials were characterized with respect to degree of cure, strength and water sorption. It was concluded that: 1. No correlation was observed between the curing cycles and polymer structure. 2. The curing cycle of 7 h at 70 degrees C plus 1 h at 100 degrees C produced best indentation strength and tensile strength. 3. A correlation was observed between residual monomer, indentation resistance, tensile strength and water sorption. This suggested that residual monomer concentration is the most important parameter in the determination of the properties of the material investigated in this study.
义齿基托材料的性能可通过在固化周期中改变加热温度和时间来进行调整。在本研究中，使用四种不同的固化周期对不含交联剂的聚甲基丙烯酸甲酯义齿基托进行聚合。通过酸蚀技术研究如此制得的材料结构。对材料的固化程度、强度和吸水性进行表征。得出以下结论：1. 未观察到固化周期与聚合物结构之间存在相关性。2. 70℃下7小时加100℃下1小时的固化周期产生最佳的压痕强度和拉伸强度。3. 观察到残余单体、抗压痕性、拉伸强度和吸水性之间存在相关性。这表明残余单体浓度是决定本研究中所研究材料性能的最重要参数。
