Additive effects of touch-activated polymerization and extended irradiation time on bonding of light-activated adhesives to root canal dentin
Additive effects of touch-activated polymerization and extended irradiation time on bonding of light-activated adhesives to root canal dentin
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DOI：
10.1016/j.prosdent.2020.11.021
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发表时间：
2022-05-01
影响因子：
4.6
通讯作者：
Nakajima, Masatoshi
中科院分区：
文献类型：
--
作者：
Dwiandhany, Wahyuni S.;Abdou, Ahmed;Nakajima, Masatoshi
问题陈述。光活化胶粘剂与根管牙本质的结合与额外的接触聚合活化剂的研究还不够充分。目的。本实验的目的是研究接触聚合活化剂和延长光照时间对光活化胶粘剂微拉伸粘结强度（mTBS）的影响。材料和方法。采用Prime&Bond Universal （PBU）对50颗拔除的下颌前磨牙进行后牙洞的制备和粘接；PBU+自固化活化剂（SCA）；清理SE Bond 2 (SEB)；SEB+Clearfil DC活化剂（DCA）；或Clearfil Universal Bond Quick ER （UBQ）。在光辐射10或20秒后，用双活化树脂芯材料填充柱腔。每个试件制备了8根梁，并进行了mTBS试验。mTBS数据采用Bonferroni校正的3-way anova分析（alpha= 0.05）。3-way方差分析表明，使用接触聚合活化剂（SCA和DCA）可显著增加冠状区（P= 0.015）和根尖区（P= 0.001） PBU和SEB的mTBS。光照时间延长至20秒后，其根尖区mTBS显著提高(P
Statement of problem. The bonding of light-activated adhesives to root canal dentin with an additional touch-polymerization activator has been insufficiently examined. Purpose. The purpose of this in vitro study was to investigate the effect of touch-polymerization activators and extended light-irradiation time on the microtensile bond strength (mTBS) of lightactivated adhesives.Material and methods. Post cavities were prepared in 50 extracted mandibular premolars and bonded using Prime&Bond Universal (PBU); PBU+Self Cure Activator (SCA); Clearfil SE Bond 2 (SEB); SEB+Clearfil DC Activator (DCA); or Clearfil Universal Bond Quick ER (UBQ). After lightirradiation for 10 or 20 seconds, the post cavities were filled with dual-activated resin core materials. Eight beams were prepared per specimen and subjected to the mTBS test. The mTBS data were analyzed by using 3-way ANOVAs with the Bonferroni correction (alpha=.05).Results. The 3-way ANOVAs indicated that the use of touch-polymerization activators (SCA and DCA) significantly increased the mTBS of PBU and SEB in both the coronal (P=.015) and apical (P=.001) regions. The extension of light-irradiation time to 20 seconds significantly improved their mTBS in the apical region (P