Asmussen E, Peutzfeldt A
Department of Dental Materials and Technology, Royal Dental College, Copenhagen, Denmark.
Scand J Dent Res. 1990 Dec;98(6):564-7. doi: 10.1111/j.1600-0722.1990.tb01013.x.
Inlay/onlay materials based on composite resins have recently been introduced. It was the aim of the present study to investigate the effect of post-curing temperature on selected mechanical properties. Four different composite resins were produced. The composite resins had identical filler content, but varied with respect to the content of the monomers BISGMA, TEGDMA, UEDMA, and HEMA. After initial curing by light, the materials were post-cured at 37, 100, 125, 150, 175, or 200 degrees C for 1 h. We then measured diametral tensile strength, flexural strength, and modulus of elasticity. These properties were found to vary with the composition of the material. Composites containing UEDMA or UEDMA/HEMA were stronger and stiffer than BISGMA/TEGDMA formulations. The optimum post-curing temperature was 150 degrees C, but the increase in strength and stiffness was moderate, only about 9%.
基于复合树脂的嵌体/高嵌体材料最近已被引入。本研究的目的是调查后固化温度对选定机械性能的影响。制备了四种不同的复合树脂。这些复合树脂具有相同的填料含量，但在双酚A双甲基丙烯酸缩水甘油酯（BISGMA）、三乙二醇二甲基丙烯酸酯（TEGDMA）、超支化聚氨酯二甲基丙烯酸酯（UEDMA）和甲基丙烯酸羟乙酯（HEMA）单体的含量方面有所不同。经光初始固化后，材料在37、100、125、150、175或200摄氏度下后固化1小时。然后我们测量了径向拉伸强度、弯曲强度和弹性模量。发现这些性能随材料组成而变化。含有UEDMA或UEDMA/HEMA的复合材料比BISGMA/TEGDMA配方更强且更硬。最佳后固化温度为150摄氏度，但强度和刚度的增加适中，仅约9%。
