氟离子导入对牙本质粘接系统微拉伸粘接强度的影响  

Effect of fluoride iontophoresis on the microtensile bonding strength of different bonding systems

作　　者：陈丽娟[1] 万延俊[1] 孟庆飞[2] 陈亚明[3] 

机构地区：[1]徐州市第一人民医院,221002 [2]徐州市中心医院 [3]南京医科大学附属口腔医院修复科

出　　处：《中华口腔医学研究杂志（电子版）》2013年第2期25-28,共4页Chinese Journal of Stomatological Research(Electronic Edition)

摘　　要：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3.0～5.0mm的树脂冠,于37℃的0.9%氯化钠溶液中放置24h,之后制备成截面为1.0mm×1.0mm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 AI： applied with total-etched adhesive systems One-Step Plus; Group A2： applied with total-etched adhesive systems One-Step Plus after fluoride iontophoresis; Group BI： 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 buceal-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 or=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.

关 键 词：氟离子导入 粘接强度 微拉伸 

分 类 号：R783[医药卫生—口腔医学]