摘要
目的:探讨3种一步法自酸蚀粘结剂对复合树脂粘结修复后微渗漏的影响。方法:取正畸治疗拔除的正常前磨牙105个,在每个牙的颊侧颈部制备4 mm×2 mm×2.5 mm的窝洞后,随机分为A1组(磷酸预处理后自酸蚀Clearfil S3 Bond)、A2组(自酸蚀Clearfil S3 Bond)、B1组(磷酸预处理后自酸蚀Beautibond)、B2组(自酸蚀Beautibond)、C1组(磷酸预处理后自酸蚀Hybrid Coat)、C2组(自酸蚀Hybrid Coat)和D组(全酸蚀Prime&Bond NT)。粘结和复合树脂充填后冷热循环处理;亚甲蓝溶液染色24 h。然后将各牙沿颊舌向通过充填体中央纵行剖开,体视显微镜下观察充填体边缘的染色情况并进行分级;SEM观察粘结界面形貌。结果:A2、B2、C2组间微渗漏值比较P>0.05,但均小于D组;A2、B2与D组相比P<0.05;C2与D组比较P>0.05。A1、B1、C1组间微渗漏值比较P>0.05,但均小于D组(P<0.05)。A1与A2、B1与B2相比P>0.05;而C1组微渗漏值小于C2组(P<0.05)。SEM观察显示,3种自酸蚀粘结剂均与牙体组织、树脂结合严密均匀。结论:3种一步法自酸蚀粘结剂边缘封闭性均良好,磷酸预处理釉质可减少Hybrid Coat自酸蚀粘结剂的微渗漏。
AIM ： To study the effects of 3 one-step self etching adhesives on microleakage of resin compos- ites. METHODS： 105 recently extracted human premolars for orthodontic reasons were used. Class V cavities were prepared at the buccal neck of the teeth. The teeth were randomly divided into 7 groups ： Group A1 [ phosphoric acid Etchant（ PAE）/self etching （SE） Clearfil S3 Bondl, Group A2 （ SE ClearfilS3 Bond）, Group B1 （ PAE/SE Beauti- bond）, Group B2 （SE Beautibond）, Group C1 （PAE/SE Hybrid Coat）, Group C2 （SE Hybrid Coat） and Group D （ Prime ＆ Bond NT）. The cavities were restored with composite resin after the adhesive system treatment. After ther- mocyeling and dye penetration for 24 h with methylene blue, all teeth were cut in buccal - lingual direction and the de- gree of dye penetration was observed under stereomicroscope for the microleakage evaluation. The interfacial morpholo- gy of resin - adhesive - dentin was observed under SEM. RESULTS ： The microleakage value in Group A2 and Group B2 was lower than in Group D （P 〈 0.05 ） , in Group A1 and Group B1 was lower than in Group C2 and Group D （P 〈 0.05 ） , and in Group C1 was lower than in Group C2 （P 〈 0.05 ）. SEM observation showed all 3 kinds of self etch-ing adhesives bounded tightly and evenly with dentin and resin composite. CONCLUSION： The three new one-step self etching adhesives have good sealing effect. Pretreatment with phosphoric acid may decrease the microleakage.
出处
《牙体牙髓牙周病学杂志》
CAS
北大核心
2013年第7期432-435,共4页
Chinese Journal of Conservative Dentistry
基金
河北省卫生厅科研基金资助项目(20110159)
关键词
自酸蚀
粘结剂
微渗漏
self etching
adhesives
microleakage
作者简介
杨湲波（1972-），男，汉族，山东人。硕士，副主任医师.
通讯作者：董青，E—mail：dongqing@bjmu．edu．cn
