Bond durability of universal adhesives to intact enamel surface in different etching modes
Bond durability of universal adhesives to intact enamel surface in different etching modes
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DOI：
10.1111/eos.12768
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发表时间：
2021-03-05
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：
Suzuki, Miho;Takamizawa, Toshiki;Miyazaki, Masashi
本研究旨在确定通用粘合剂在热循环（TC）和疲劳应力下不同蚀刻模式下对完整釉质（IE）和磨光釉质（GE）的釉质粘合耐久性。使用两种通用粘合剂和一种两步自蚀刻粘合剂。通过处理将牙釉质样本分为四组：（i）蚀刻和冲洗中的GE，（ii）蚀刻和冲洗中的IE，（iii）自蚀刻中的GE，以及（iv）自蚀刻中的IE。对粘合样本进行 TC 测试，然后进行剪切粘合强度 (SBS) 测试。在 37°C 水中储存 24 小时（基线）后也进行了 SBS 测试。对于剪切疲劳强度 (SFS) 测试，粘合样本在 10 Hz 频率下承受 50,000 次循环的疲劳应力。在基线时，与蚀刻和冲洗模式相比，在自蚀刻模式下，所有粘合剂在 GE 下均表现出显着高于 IE 的 SBS 值。 TC 后，无论蚀刻模式如何，带有 IE 的通用粘合剂都显示出比基线更低的 SBS 值。通用粘合剂在蚀刻和冲洗模式下使用 IE 时显示出显着较低的 SFS 值，但在自蚀刻模式下则不然。在自蚀刻模式下使用通用粘合剂时，对棱柱形釉质进行磷酸预蚀刻或研磨可能有助于与釉质建立可靠的初始和长期粘合。
This study aimed at determining the enamel bond durability of universal adhesives to intact enamel (IE) and ground enamel (GE) in different etching modes under thermal cycling (TC) and fatigue stresses. Two universal adhesives and a two-step self-etch adhesive were used. Enamel specimens were divided into four groups by treatment: (i) GE in etch-and-rinse, (ii) IE in etch-and-rinse, (iii) GE in self-etch, and (iv) IE in self-etch. Bonded specimens were subjected to TC, and then shear bond strengths (SBS) were conducted. SBS tests were also conducted after storage in 37 degrees C water for 24 h (baseline). For shear fatigue strength (SFS) testing, bonded specimens were subjected to fatigue stress at a frequency of 10 Hz for 50,000 cycles. At baseline, all adhesives showed significantly higher SBS values with GE than IE in self-etch mode in contrast to in etch-and-rinse mode. After TC, the universal adhesives with IE showed lower SBS values than the baseline, regardless of the etching mode. Universal adhesives showed significantly lower SFS values with IE in etch-and-rinse, but not in self-etch mode. Phosphoric acid pre-etching or grinding of the aprismatic enamel may be helpful in establishing reliable initial and long-term bonds to enamel when using universal adhesives in self-etch mode.