华西口腔医学杂志2012，Vol.30Issue(3)：243-246,4.DOI:10.3969/j.issn.1000-1182.2012.03.005
自粘接树脂水门汀在模拟根管内的硬度变化
Hardness development of self-adhesive resin cement in simulated root canal
摘要
Abstract
Objective To compare the hardness development of dual-cured self-adhesive and universal resin cement in simulated root canal. Methods The light-proof half-cylinder steel slot with one end open were syringed and filled respectively by self-adhesive ACRelyX Unicem), BCBisCem) and universal CCDUOIiNK) resin cements, then the open end of slot was irradiated directly by a light unit for 20 s. Specimens were stored in a light-proof box for 0.5 h, Knoop microhardness was measured along the vertical surfaces of specimens from 1 mm to 10 mm depth at 1 mm intervals. The same measurements were taken at 24 h and 120h after irradiation. Data were analyzed by One-way ANOVA. Results Hardness of each group decreased with the increase of simulated canal depth (AV0.001), however hardness showed no significant change between 5 mm and more depth of group A, between 4 mm and more depth of group B and C. The increase of hardness for each group was more rapid within 0.5 h after irradiation, thereafter the hardness increased gradually to maximum at 24 h. At 120 h after irradiation, hardness of group C was greater than that of other two groups at more than 1 mm depth (fMXOOl) ■ Conclusion Under dual-cured condition, hardness has significant difference between self-adhesive and universal resin cements, however their hardness development is similar.关键词
自粘接树脂水门汀/双重固化/显微硬度/根管Key words
self-adhesive resin cement/ dual-cured/ microhardness/ root canal分类
医药卫生引用本文复制引用
丁虹,兰卫东,孟翔峰..自粘接树脂水门汀在模拟根管内的硬度变化[J].华西口腔医学杂志,2012,30(3):243-246,4.基金项目
南京市医学科技发展基金资助项目(ZKX09035) （ZKX09035）
南京市科技发展基金资助项目(201001083) （201001083）
