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预热对大块充填树脂固化性能影响的体外研究

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摘要 目的探讨预热对大块充填树脂(Bulk-fill Resin Composites,BFRCs)单体转化率(Monomer Conversion,DC)和聚合体积收缩率(Polymerization Volume Shrinkage,PVS)的影响。方法采用Mini LEDTM光固化机对预热(55±0.5)℃及未预热(23±0.5)℃的大块充填树脂进行固化,一部分采用傅里叶红外光谱仪(FTIR)测定DC,另一部分激光位移传感器测量PVS。数据分析采用配对t检验(P<0.05)。结果未预热组、预热组的DC分别为(60.69±5.54)%、(71.29±8.55)%。未预热组、预热组的PVS分别为(1.82±1.01)%、(0.90±0.65)%。预热能显著提高SonicFill树脂的DC(P<0.05):aDC组>ADC组;同时,预热能显著降低SonicFill树脂的PVS(P<0.05):aPVS组<APVS组。结论预热对大块充填树脂DC和PVS均有显著影响,预热后能提高单体转化率,降低聚合体积收缩率。
出处 《江西医药》 CAS 2022年第6期569-571,581,共4页 Jiangxi Medical Journal
基金 江西省卫生健康委员会一般项目,编号SKJP220202726。
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