Immediate enamel bond strength of universal adhesives to unground and ground surfaces in different etching modes
Immediate enamel bond strength of universal adhesives to unground and ground surfaces in different etching modes
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DOI：
10.1111/eos.12626
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发表时间：
2019-08-01
影响因子：
1.9
通讯作者：
Miyazaki, Masashi
中科院分区：
文献类型：
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作者：
Takeda, Mitsuhiro;Takamizawa, Toshiki;Miyazaki, Masashi
本研究的目的是通过剪切粘合强度 (SBS) 测试和扫描电子显微镜观察，确定通用粘合剂在不同蚀刻模式下对未研磨和研磨搪瓷表面的直接粘合效果。对三种通用粘合剂、传统的两步自蚀刻粘合剂和传统的单步自蚀刻粘合剂进行了比较。将来自下前牙的人类牙釉质标本分为四组并进行以下处理：（i）自蚀刻模式下的未研磨牙釉质； (ii) 自蚀刻模式下的研磨釉质； (iii) 蚀刻和冲洗模式下的未研磨搪瓷； (iv) 在蚀刻和冲洗模式下研磨搪瓷。粘合组件经过 SBS 测试。无论搪瓷是否未研磨或研磨，所有粘合剂在蚀刻和冲洗模式下均显示出明显高于自蚀刻模式的 SBS 值。不同蚀刻方式下，釉质表面状况对SBS的影响不同。在没有预蚀刻的情况下，所有测试材料在未研磨釉质中的 SBS 值均低于研磨釉质中的 SBS 值。在蚀刻和冲洗模式下，对于任何测试的粘合剂，未研磨的搪瓷和研磨的搪瓷之间没有观察到 SBS 值的显着差异。在将自蚀刻粘合剂施加到未研磨的釉质表面之前进行磷酸预蚀刻对于增强初始釉质粘合效果至关重要。
The purpose of this study was to determine the immediate bond effectiveness of universal adhesives to unground and ground enamel surfaces in different etching modes, through shear bond strength (SBS) tests and scanning electron microscopy observations. Three universal adhesives, a conventional two-step self-etch adhesive, and a conventional single-step self-etch adhesive were compared. Human enamel specimens from lower anterior teeth were divided into four groups and subjected to the following treatments: (i) unground enamel in self-etch mode; (ii) ground enamel in self-etch mode; (iii) unground enamel in etch-&-rinse mode; and (iv) ground enamel in etch-&-rinse mode. Bonded assemblies were subjected to SBS testing. All the adhesives showed significantly higher SBS values in etch-&-rinse mode than in self-etch mode, regardless of whether enamel was unground or ground. The influence of the enamel surface condition on SBS was different in different etching modes. Without pre-etching, all tested materials showed lower SBS values in unground enamel than in ground enamel. In etch-&-rinse mode, no significant differences in SBS values were observed between unground enamel and ground enamel for any of the adhesives tested. Phosphoric acid pre-etching before application of self-etch adhesives to an unground enamel surface is essential to enhance initial enamel bond effectiveness.