自酸蚀粘接系统在四环素牙本质中的粘接效果研究

摘要

Objective To evaluate the adhesion of self-etching adhesive system to Tetracycline dentin. Methods From June 2004 to April 2016, 56 teeth with self-etching Tetracycline dentin and 56 teeth with total-etching Tetracycline dentin were selected according to the random number table method, and according to the ratio of 1: 1 the self-etching and total-etching healthy teeth were selected with 56 in each group. The adhesive strength and fracture patterns of the four groups were compared. Results Before and after thermal cycling, the microtensile bonding strength of the self-etching Tetracycline dentin group, the self-etching healthy dentin group and the total-etching healthy dentin group was significantly higher than that of the total-etching Tetracycline dentin group (P < 0.05). Before and after thermal cycling, the shear bonding strength of the self-etching healthy dentin group was significantly higher than that of the other three groups, the shear bonding strength of the self-etching Tetracycline dentin group was statistically higher than that of the total-etching dentin Tetracycline group and the total-etching healthy dentin group (P < 0.05). The microtensile bonding strength and shear bonding strength of the four groups were decreased after hot and cold cycles. The microtensile fracture mode of the four groups was mainly mixed fracture, the proportion was 85.71%, 87.50%, 85.71%, and 75.00% respectively. Conclusions The adhesive effect of self-etching adhesive system is better, and the adhesive strength to Tetracycline dentin is higher than that of all-etching adhesive, and the adhesive strength decreases after thermal cycling treatment.%目的 探讨自酸蚀粘接系统对四环素牙本质的粘接价值.方法 选取2004年6月-2016年4月该院口腔科收治的自酸蚀四环素牙本质56颗和全酸蚀四环素牙本质56颗,按照1:1的比例选取自酸蚀健康牙本质56颗和全酸蚀健康牙本质56颗.比较4组的粘接强度和断裂模式.结果 冷热循环前后,自酸蚀四环素牙本质组、自酸蚀健康牙本质组、全酸蚀健康牙本质组的微拉伸粘接强度高于全酸蚀四环素牙本质组(P <0.05).冷热循环前后,自酸蚀健康牙本质组的剪切粘接强度高于其他3组,自酸蚀四环素牙本质组的剪切粘接强度高于全酸蚀四环素牙本质组和全酸蚀健康牙本质组(P <0.05).冷热循环后,4组的微拉伸粘接强度和剪切粘接强度均有所降低.4组的微拉伸断裂模式主要为混合断裂,比例分别为85.71%、87.50%、85.71%和75.00%.结论 自酸蚀粘接系统的粘接效果较好,其对四环素牙本质的粘接强度高于全酸蚀粘接剂,经冷热循环处理后粘接强度有下降趋势.