华西口腔医学杂志2016，Vol.34Issue(4)：350-353,4.DOI:10.7518/hxkq.2016.04.006
生物活性玻璃改性树脂粘接剂对牙本质脱矿及树脂粘接强度的影响
Effects of dentin demineralization and bond-strength properties of bioactive glass containing resin adhesive
摘要
Abstract
ObjectiveThis study investigated the shear bond strength and the ability of resin adhesive containing different amounts of bioactive glass (BG) to prevent dentin demineralization.Methods BG bonds at 30%, 40%, and 50% concen-trations comprised a mixture of coupling agents modifying BG and Single Bond 2. Forty permanent premolars extracted for orthodontic treatment were randomly divided into four groups, namely, control group (BG-free), 30% BG group, 40% BG group, and 50% BG group. Composite resin and dentin were prepared into bonding specimens by using respective adhesives and then immersed in artificial saliva at pH 4 for 1 week. Changes in the pH values of the solution were measured every 24 h. The microtensile bond strength (TBS) of each specimen was examined after immersion in distilled water at 37 °C for 24 h. Results The TBS values of the control group, 30% BG group, 40% BG group, and 50% BG group were (27.76±0.29), (27.05± 0.58), (26.95±0.69), and (25.12±0.24) MPa, respectively. The TBS of the control group was not significantly different from that of the 30% BG group (P=0.06) but significantly higher than that of the 40% BG and 50% BG groups (P=0.04 andP=0.00, respectively). In addition, TBS was significantly higher in the 30% BG and 40% BG groups than in the 50% BG group (P=0.00 andP=0.00, respectively). The pH values of the solution increased with increasing BG content.Conclusion BG bonds are useful in the prevention of dentin demineralization. How-ever, in this study, the 30% BG group did not affect the short-term bond strength. The 50% BG group displayed the opti-mum ability to inhibit demineralization but showed the worst bond strength.关键词
生物活性玻璃/树脂粘接剂/牙本质/pH值/粘接强度Key words
bioactive glass/resin adhesive/dentin/pH value/bond strength分类
医药卫生引用本文复制引用
王瑜,龚玲,计艳,郑丽纯,陈嵩..生物活性玻璃改性树脂粘接剂对牙本质脱矿及树脂粘接强度的影响[J].华西口腔医学杂志,2016,34(4):350-353,4.基金项目
南京市医学科技发展项目 （）
