Xu Yingxin, Zhou Jianfeng, Tan Jianguo
Department of Prosthodontics, Peking University School and Hospital of Stomatology.
Department of Stomatology, Peking University Shenzhen Hospital.
Dent Mater J. 2018 Mar 30;37(2):325-331. doi: 10.4012/dmj.2017-060. Epub 2017 Dec 27.
This study was to ascertain if grape seed extract (GSE) can restore the shear bond strength (SBS) of total-etching adhesive to enamel immediately after bleaching. Immediately after bleaching with Beyond gel, different concentrations of GSE were applied to the surface of bovine enamel for 1 min before bonding of resin composite with Adper single bond 2 or All-Bond 3 adhesive. SBS values and debonding modes were recorded. Structure of the bonding interface and elements on enamel surface were analyzed by scanning electron microscopy and X-ray photoelectron spectroscopy (XPS). SBS was found to be compromised significantly in 0 and 2.5% GSE groups. GSE (≥5%) could restore the SBS to the level of control. Failure in the adhesive joint was always the major debonding mode. No significant difference was found by XPS. Thus, GSE can restore the SBS compromised after bleaching in 1 min if the concentration is ≥5%.
本研究旨在确定葡萄籽提取物(GSE)能否在漂白后立即恢复全蚀刻型粘合剂与牙釉质之间的剪切粘结强度(SBS)。在用Beyond凝胶漂白后,立即将不同浓度的GSE涂覆在牛牙釉质表面1分钟,然后用Adper单键2或全粘结3粘合剂粘结树脂复合材料。记录SBS值和脱粘模式。通过扫描电子显微镜和X射线光电子能谱(XPS)分析粘结界面的结构和牙釉质表面的元素。结果发现,0%和2.5%GSE组的SBS显著降低。GSE(≥5%)可将SBS恢复到对照组水平。粘结接头失效始终是主要的脱粘模式。XPS分析未发现显著差异。因此,如果GSE浓度≥5%,则可在1分钟内恢复漂白后受损的SBS。