中华口腔医学研究杂志(电子版) ›› 2013, Vol. 07 ›› Issue (02) : 117 -121. doi: 10.3877/cma.j.issn.1674-1366.2013.02.007 × 扫一扫
基础研究
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Li-juan CHEN1, Yan-jun WAN1, Qing-fei MENG1, Ya-ming CHEN1,†()
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陈丽娟, 万延俊, 孟庆飞, 陈亚明. 氟离子导入对牙本质粘接系统微拉伸粘接强度的影响[J/OL]. 中华口腔医学研究杂志(电子版), 2013, 07(02): 117-121.
Li-juan CHEN, Yan-jun WAN, Qing-fei MENG, Ya-ming CHEN. Effect of fluoride iontophoresis on the microtensile bonding strength of different bonding systems[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2013, 07(02): 117-121.
目的
研究氟离子导入对牙本质与两种树脂粘接剂之间微拉伸粘接强度 （MTBS）的影响。
方法
选取12 颗新鲜拔除（1 周内）的完整无龋、无裂纹人下颌第三磨牙，随机分成4 组，每组3 颗。 用Isomet 低速切割机流水冲洗下磨去咬合面釉质，暴露牙本质。 （1）A1 组：使用全酸蚀树脂粘接剂One-Step Plus；（2）A2 组：氟离子导入处理后使用全酸蚀树脂粘接剂One-Step Plus；（3）B1组：使用自酸蚀树脂粘接剂ACE Bond SE；（4）B2 组：氟离子导入处理后使用自酸蚀树脂粘接剂ACE Bond SE。 每颗牙齿均制作高3.0 ～5.0 mm 的树脂冠，于37℃的0.9%氯化钠溶液中放置24 h，之后制备成截面为1.0 mm × 1.0 mm 的条状试件，测试MTBS，并对结果进行统计学分析（α=0.05）。
结果
各组MTBS 依次为（30.86 ± 6.84）、（25.04 ± 8.49）、（19.22 ± 6.88）、（19.40 ± 6.92） MPa。 A1、A2 组间（P=0.01）、A1、B1 组间（P＜0.0001）、A2、B2 组间（P=0.02）比较差异均有统计学意义；B1、B2组间比较差异无统计学意义（P=1.00）。 此外，微拉伸试件断裂大多以粘接界面破坏为主，各组间试件断裂方式差异无统计学意义。
结论
氟离子导入可显著降低One-Step Plus 的牙本质粘接强度，而对ACE Bond SE 的牙本质粘接强度则无明显影响。 无论是否使用氟离子导入，全酸蚀粘接剂One-Step Plus 的牙本质粘接强度都显著高于自酸蚀粘接剂ACE Bond SE。
Objective
To evaluate the effect of fluoride iontophoresis on the microtensile bonding strength （MTBS） between dentine and two adhesive systems.
Methods
Twelve freshly extracted intact human mandibular third molars were divided into four groups randomly. The superficial occlusal dentine of each tooth was exposed by Isomet Low Speed Saw under copious water spray. Group A1：applied with total-etched adhesive systems One-Step Plus； Group A2： applied with total-etched adhesive systems One-Step Plus after fluoride iontophoresis； Group B1： applied with self-etched adhesive systems ACE Bond SE； Group B2： applied with self-etched adhesive systems ACE Bond SE after fluoride iontophoresis. A resin-composite crown was made for each tooth. The teeth were stored in 0.9% saline solution for 24 h at 37℃，and each was sectioned both mesial-distally and buccal-lingually along its long axis into ten 1.0 mm × 1.0 mm sticks for the microtensile test. The data were analyzed with the significant level α=0.05.
Results
The MTBS （MPa） of four groups were as follows respectively： （30.86 ± 6.84），（25.04±8.49），（19.22±6.88），（19.40±6.92）. There were significant differences between group A1 and A2 （P=0.01），group B1 and B2 （P＜0.0001） and group A2 and B2 （P=0.02），but no significant difference was found between group B1 and B2 （P=1.00）. Meanwhile，most of the specimens were fractured within the adhesive interface and there was no significant difference in the microtensile facture modes among all four test groups.
Conclusions
Fluoride iontophoresis treatment reduced the bonding strength of total-etched bonding system One-Step Plus，but not that of self-etched adhesive system ACE Bond SE. Whether the dentine was treated with fluoride iontophoresis，the bonding strength to dentine of total-etched bonding system was larger than that of self-etched bonding system.