Improving the effect of NaOCl pretreatment on bonding to caries-affected dentin using self-etch adhesives
Improving the effect of NaOCl pretreatment on bonding to caries-affected dentin using self-etch adhesives
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DOI：
10.1016/j.jdent.2009.06.005
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发表时间：
2009-10-01
影响因子：
4.4
通讯作者：
Tagami, Junji
中科院分区：
文献类型：
--
作者：
Taniguchi, Gen;Nakajima, Masatoshi;Tagami, Junji
目的：评价次氯酸钠预处理对自酸蚀粘接剂粘接正常牙本质和患龋牙本质的影响。每组牙本质表面，包括患龋牙本质，分别用水冲洗，6%氯化钠溶液处理15 S，6%氯化钠溶液处理30 S，6%氯化钠溶液处理30 S，4组处理后用Accel处理30 S。经过水冲洗和风干处理后的牙本质表面，按照制造商的说明使用自酸蚀系统(Bond Force和Clearile Protect Bond)，并与树脂复合体结合。在37℃的水中保存24小时后，将粘结的正常牙本质区域或龋损影响的牙本质区域隔离以形成横截面面积约为1 mm的沙漏状结构(2)。结果：NaOCl15 S预处理剂显著提高了两种自酸蚀粘结剂对患龋牙本质的粘接强度，而30 S预处理剂对其无明显影响。对于正常牙本质，NaOCl-30 S预处理剂显著降低了两种自酸蚀粘结剂的粘接剂的粘接强度，而15 S预处理剂对其无明显影响。此外，使用具有减少作用的Accel可增加正常牙本质和患龋牙本质经NaOCl处理30年后的MUTBS。结论：NaOCl预处理对两种自酸蚀粘结剂粘接性能的影响与牙本质类型(正常牙本质和患龋牙本质)和处理时间有关。(C)2009爱思唯尔有限公司。保留所有权利。
Objective: To evaluate the effect of sodium hypochlorite pretreatment on adhesion to normal and caries-affected dentin using self-etch adhesives.Methods: Forty extracted human molars with coronal carious lesions were used in this experiment. The occlusal dentin surfaces including the caries-affected dentin in each group were treated as follows: group 1, rinsed with water; group 2, treated with 6% NaOCl for 15 s; group 3, treated with 6% NaOCl for 30 s; group 4, application with Accel for 30 s after NaOCl-30 s pretreatment. After rinsing with water and air-drying, the treated dentin surfaces were applied with self-etch systems (Bond Force and Clearfil Protect Bond) according to the manufacturers' instructions, and built-up with resin composite. After 37 degrees C water storage for 24 h, the bonded normal or caries-affected dentin areas were isolated to create an hourglass configuration with a cross-sectional area of approximately 1 mm(2). The specimens were subjected to tensile stress at a cross-head speed of 1.0 mm/min.Results: NaOCl-15 s pretreatment significantly improved the mu TBS of both self-etch adhesives to caries-affected dentin, while the 30 s pretreatment did not affect them. For normal dentin, NaOCl-30 s pretreatment significantly reduced the mu TBS of both self-etch adhesives although the 15 s pretreatment did not alter them. Furthermore, the application of Accel with a reducing effect increased the mu TBS to normal and caries-affected dentin treated with NaOCl for 30 s.Conclusions: The effects of NaOCl pretreatment on bonding of both self-etch adhesives were dependent upon type of dentin (normal and caries-affected dentin) and the treatment time. (C) 2009 Elsevier Ltd. All rights reserved.