不同预处理剂对乳牙牙本质粘接耐久性的影响  

Effects of different pretreatment agents on primary tooth dentin bonding durability

作　　者：刘恩娣 吕晶[1] 刘英群[1] 金星爱[1] LIU Endi;LV Jing;LIU Yingqun;JIN Xing'ai(The First Affiliated Hospital of Harbin Medical University,Department of Pediatrics,School of Stomatology,Harbin Medical University,Harbin 150000,China)

机构地区：[1]哈尔滨医科大学附属第一医院,哈尔滨医科大学口腔医学院儿童口腔科,黑龙江哈尔滨150000

出　　处：《口腔疾病防治》2022年第7期475-482,共8页Journal of Prevention and Treatment for Stomatological Diseases

基　　金：黑龙江省自然科学基金项目(H2016037);黑龙江省仁芯骨健康医疗救助基金会资助项目(2021IIT070)。

摘　　要：目的 探讨不同预处理剂对乳牙牙本质粘接耐久性的影响。方法 选取42颗因滞留而拔除的乳磨牙,其中24颗沿近远中向切开为颊舌侧两部分得到48个样本,用于剪切粘接强度实验;另外18颗用于纳米渗漏实验。两项实验均按照不同预处理方式将样本随机分为3组,A组:蒸馏水预处理组,B组:2%氯己定预处理组,C组:10 mg/mL白藜芦醇预处理组。制备实验试件,分别在即刻和10%次氯酸钠溶液老化1 h后进行剪切粘接强度检测、界面纳米渗漏评估和扫描电子显微镜观察,评价不同预处理剂对粘接界面的影响。结果 即刻测试各组的剪切粘接强度无显著差异。老化后C组的剪切粘接强度显著高于A组和B组(P<0.05)。A组老化后的剪切粘接强度显著低于即刻(P<0.05),B组和C组在老化前后的剪切粘接强度无显著差异(P>0.05)。C组的界面纳米渗漏程度在老化前后比较无显著差异,老化后C组的纳米渗漏程度最低(P<0.05)。结论 氯己定和白藜芦醇预处理剂均可以改善乳牙牙本质的粘接耐久性,但白藜芦醇的效果优于氯己定。Objective To explore the effects of different pretreatment agents on primary tooth dentin bonding durability.Methods Forty-two retained primary molars were selected,24 of which were cut along the mesial and distal directions;thus,48 samples were obtained for shear bond strength tests,and the other 18 teeth were used for nanoleakage tests.According to different pretreatments,both experimental samples were divided randomly into three groups (Group A:distilled water pretreatment group;Group B:2%chlorhexidine pretreatment group;Group C:10 mg/m L resveratrol pretreatment group).The test specimens were prepared,the shear bond strength was tested,and interfacial nanoleakage evaluation and scanning electron microscope observation were performed to evaluate the effects of different pretreatment agents on the bonding interface immediately and after aging for one hour with 10%sodium hypochlorite aqueous solution.Results The immediate shear bond strength results showed that there was no significant difference among the three test groups.After aging,the shear bond strength of Group C was significantly higher than that of Group A and Group B (P<0.05).After aging,the shear bond strength of Group A was significantly lower than the immediate shear bond strength (P<0.05),whereas there was no significant difference in shear bond strength before and after aging in Group B and Group C (P>0.05).For Group C,there was no significant difference in interfacial nanoleakage before and after aging.In addition,among the three groups,Group C had the lowest interfacial nanoleakage (P<0.05).Conclusion Both chlorhexidine and resveratrol pretreatment can improve the adhesion durability of deciduous dentin,but the effects of resveratrol are better than those of chlorhexidine.

关 键 词：乳牙牙本质 预处理剂 氯己定 白藜芦醇 剪切粘接强度 纳米渗漏 树脂-牙本质粘接界面 粘接耐久性 

分 类 号：R78[医药卫生—口腔医学]