Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU).
Department of Oral Prosthetic Engineering, Graduate School, Faculty of Dentistry, Tokyo Medical and Dental University (TMDU).
Dent Mater J. 2019 Dec 1;38(6):892-899. doi: 10.4012/dmj.2018-286. Epub 2019 Aug 1.
The purpose was to evaluate the effect of a hydrophilic amide monomer on μTBS of one-step adhesive to dentin at different application times. Clearfil Universal Bond Quick (UBQ), experimental adhesive (UBQ; same compositions as UBQ but hydrophilic amide monomer was replaced with 2-hydroxyethyl methacrylate), Clearfil SE ONE and Clearfil SE Bond were applied to midcoronal dentin prepared with 600-grit SiC at different application time (0, 10, 20 and 40 s). Water sorption (Wsp) and the ultimate tensile strength (UTS) of polymerized adhesives were also measured. UBQ showed significantly lower Wsp and higher UTS than UBQ. At each application time, UBQ exhibited significantly higher μTBSs than UBQ. UBQ showed the highest μTBS at 0 s application time among all the adhesives. When the application time was prolonged from 0 s to 10 s, only UBQ showed no significant difference. The hydrophilic amide monomer increased μTBS with reduction in Wsp and increase in the UTS and may allow a shortened application time.
目的是评估亲水性酰胺单体对一步法牙本质粘接剂 μTBS 的影响，在不同的应用时间。Clearfil Universal Bond Quick (UBQ)，实验性粘接剂（UBQ；与 UBQ 相同的成分，但亲水性酰胺单体被 2-羟乙基甲基丙烯酸酯取代），Clearfil SE ONE 和 Clearfil SE Bond 被应用于用 600 目 SiC 制备的近中牙本质，应用时间不同（0、10、20 和 40 s）。还测量了吸水（Wsp）和聚合胶粘剂的极限拉伸强度（UTS）。UBQ 的 Wsp 明显低于 UBQ，UTS 明显高于 UBQ。在每个应用时间，UBQ 表现出明显高于 UBQ 的 μTBS。在所有的胶粘剂中，UBQ 在 0 s 的应用时间表现出最高的 μTBS。当应用时间从 0 s 延长至 10 s 时，只有 UBQ 没有显著差异。亲水性酰胺单体通过降低 Wsp 和增加 UTS 来增加 μTBS，并可能允许缩短应用时间。
