尽管自粘树脂粘固剂对于牙科临床医生来说是方便且技术敏感性较低的材料,它们由于其组成中的酸性组分而表现出较低的转化程度。补充发起人,加速器,已经建议在自粘树脂水泥中使用活化剂来补偿较低的转化程度。本研究旨在评估自固化引发剂的不同组合的效果,自固化活化剂,和促进剂对自粘树脂水泥的转化度(DC)。使用六种引发剂组合制备了双固化自粘树脂,活化剂,加速器。在有和没有光固化的情况下评估DC随时间的变化。薄膜厚度,流动属性,评估每种制剂的细胞毒性。结果表明,所有补充成分都有增加DC的作用,但观察到DC的更大增加顺序如下:激活剂,加速器,和发起者。树脂水泥的细胞毒性与DC值有关,因为具有较低DC值的树脂粘固剂表现出更高的细胞毒性。膜厚度符合所有组的ISO标准。结果表明,使用活化剂是增强自粘树脂水泥中DC的最有效方法,并且细胞毒性随着DC值的降低而增加。而薄膜厚度和流动性能与DC值无关。
Although self-adhesive resin cements are convenient and less technique-sensitive materials for dental clinicians, they exhibit a lower degree of conversion due to acidic components in their composition. Supplementation of the initiator, accelerator, and
activator in self-adhesive resin cements has been suggested to compensate for the lower degree of conversion. This study aimed to evaluate the effects of different combinations of self-curing initiators, self-curing activators, and accelerators on the degree of conversion (DC) of self-adhesive resin cements. A dual-cured self-adhesive resin was prepared using six combinations of initiators, activators, and accelerators. The change in the DC over time was evaluated with and without light curing. The film thickness, flow properties, and cytotoxicity of each formulation were assessed. The results showed that all supplemental components had an effect on increasing the DC, but a greater increase in the DC was observed in the following order:
activator, accelerator, and initiator. The cytotoxicity of the resin cements was related to the DC values, as resin cements with lower DC values exhibited higher cytotoxicity. The film thickness met the ISO standards for all groups. The results suggest that utilizing an
activator is the most effective approach to enhance the DC in self-adhesive resin cement and that cytotoxicity tended to increase with lower DC values, whereas film thickness and flow properties demonstrated no correlation with DC values.