Liu Ke-le, Zhang Xiao-fang, Wei Xin
VIP Department, School of Stomatology, China Medical University. Shengyang 110002, Liaoning Province, China. E-mail:
VIP Department, School of Stomatology, China Medical University. Shengyang 110002, Liaoning Province, China.
Shanghai Kou Qiang Yi Xue. 2016 Feb;25(1):38-41.
To evaluate the effect of different acid etching modes on bond strength between composite resin and non-carious sclerotic dentin, and to provide references for clinical application.
Thirty premolars with naturally-occurring non-carious cervical lesions were divided into 2 groups based on self-etch adhesive system AdperTM Easy one (AEO) and total-etch adhesive system AdperTM Single Bond2 (ASB2). Each group was further divided into 3 subgroups (ASB21, ASB22, ASB23, AEO1, AEO2, AEO3) and subjected to the following processing: ASB21 subgroup was etched for 15 s with 35% phosphoric acid and coated with binder for 15 s; ASB22 subgroup was etched for 30 s with 35% phosphoric acid and coated with binder for 15 s; ASB23 subgroup was etched for 15 s with 35% phosphoric acid and coated with binder for 30 s; AEO1 subgroup was only etched with binder for 20 s; AEO2 subgroup was etched with binder for 40 s; AEO3 subgroup was etched for 15 s with 35% phosphoric acid and coated with binder for 20 s. The samples were restored with composite resin; 24 h after saved in distilled water at room temperature, the teeth were cut into dumbbell-shaped specimens with surface areas of approximately 1.0 mm2. The microtensile bond strength (μTBS) was detected and evaluated by one-way ANOVA and SNK-q test using SPSS 17.0 software package.
μTBS was given in MPa: AEO3>ASB22>ASB23>ASB21>AEO2>AEO1, AEO3 resulted in statistically highest bond strength and AEO1 had the lowest bond strength (P<0.05), ASB22 acquired bond strength just lower than AEO3 (P<0.05).
Use of total-etch adhesive system increasing the etching time of phosphoric time can enhance bond strength. For self-etch adhesive system,both duplicated the time of adhesive treatment and use of phosphoric acid can improve the bond strength. Use of phosphoric acid to etch for 15 s and coated with self-etch adhesive system for 20 s achieved the highest bond strength. In either self-etch or total-etch adhesive system, use of phosphoric acid to etch for 15 s and coated with self-etch adhesive system for 20 s achieved optimal bond strength, there was the lowest bond strength when the self-etch adhesive system used as recommended time.
评估不同酸蚀方式对复合树脂与非龋性硬化牙本质间粘结强度的影响，为临床应用提供参考。
选取30颗有自然发生的非龋性颈部病变的前磨牙，根据自酸蚀粘结系统AdperTM Easy one（AEO）和全酸蚀粘结系统AdperTM Single Bond2（ASB2）分为2组。每组再进一步分为3个亚组（ASB21、ASB22、ASB23、AEO1、AEO2、AEO3）并进行如下处理：ASB21亚组用35%磷酸酸蚀15 s，涂粘结剂15 s；ASB22亚组用35%磷酸酸蚀30 s，涂粘结剂15 s；ASB23亚组用35%磷酸酸蚀15 s，涂粘结剂30 s；AEO1亚组仅用粘结剂蚀刻20 s；AEO2亚组用粘结剂蚀刻40 s；AEO3亚组用35%磷酸酸蚀15 s，涂粘结剂20 s。样本用复合树脂修复；在室温下于蒸馏水中保存24 h后，将牙齿切成表面积约为1.0 mm2的哑铃形标本。使用SPSS 17.0软件包通过单因素方差分析和SNK-q检验检测并评估微拉伸粘结强度（μTBS）。
μTBS以MPa表示：AEO3>ASB22>ASB23>ASB21>AEO2>AEO1，AEO3的粘结强度在统计学上最高，AEO1的粘结强度最低（P<0.05），ASB22获得的粘结强度仅低于AEO3（P<0.05）。
使用全酸蚀粘结系统增加磷酸酸蚀时间可提高粘结强度。对于自酸蚀粘结系统，增加粘结处理时间和使用磷酸均可提高粘结强度。用磷酸酸蚀15 s并涂自酸蚀粘结系统20 s可获得最高粘结强度。在自酸蚀或全酸蚀粘结系统中，用磷酸酸蚀15 s并涂自酸蚀粘结系统20 s可获得最佳粘结强度，按推荐时间使用自酸蚀粘结系统时粘结强度最低。
