空气喷磨结合酸蚀对预防性树脂充填后微渗漏的影响  

Experimental study on the effects of cavity preparation with air-abrasion in preventive resin restoration

作　　者：靳凯璐 马哲 李涛 赵建英 任建 周露阳 

机构地区：[1]河北省口腔医院河北省重点实验室,河北石家庄050017 [2]绍兴市口腔医院,浙江绍兴312000 [3]锦州医科大学,辽宁锦州121000

出　　处：《牙体牙髓牙周病学杂志》2018年第2期78-82,共5页Chinese Journal of Conservative Dentistry

基　　金：河北省科技厅科技支撑计谋项目(11246126D)

摘　　要：目的:观察用传统涡轮机和空气喷磨术处理窝沟龋及流体树脂充填后,充填体边缘微渗漏情况。方法:选择患有窝沟龋的前磨牙或磨牙100个,随机分为A、B、C、D、E 5组(n=20)。A、B、C组用传统涡轮机备洞,D、E组用空气喷磨备洞;A组酸蚀并涂布粘结剂后,用纳米复合树脂充填,最后涂布一层窝沟封闭剂;B、D组酸蚀并涂布粘结剂后,用Z350流体树脂充填;C、E组直接用Constic树脂充填。然后将各组样本进行冷热循环后,用亚甲蓝染色,体视显微镜观察各组微渗漏情况,并用扫描电镜观察充填体与牙体组织的间隙。结果:5组微渗漏程度为A组>C组>E组>B组>D组,D组与其他4组相比均有统计学差异(P<0.05);B、E组的微渗漏均低于A、C组(P<0.05);B组和E组、C组和A组的微渗漏则无统计学差异(P>0.05)。5组充填体与牙体组织间隙宽度为A组>C组>E组>B组>D组,除B、E组相比无统计学差异(P>0.05)外,其余各组两两相比均有统计学差异(P>0.05)。结论:空气喷磨技术结合全酸蚀粘结系统,并用Z350流体树脂进行预防性树脂充填能够获得更好的防止微渗漏的修复效果。AIM: To compare the effects of cavity preparation between air-abrasion and traditional handpiece method. METHODS: 100 extracted premolars and molars were divided into Group A,B,C,D and E( n = 20).The cavity preparation in group A,B and C was conduccted by trraditional handpiece,in group D and E by air-abrasion. The teeth of group A were managed by acid etching and resin adhesive before composite resin filling,then smear fissure sealant was applied on the surface; the teeth of group B and D were managed by acid etching and resin adhesive before 3 M Z350 filling; the teeth of group C and E were filled with Constic. The microlea-kage and the gap between tooth tissue and the filling material were measured by methylene blue staining and steoriomicroscope respectively. RESULTS: Microleakage level and gaps were A > C > E > B > D. Group D vs other groups,P < 0. 05; group B and E vs group C and A( P < 0. 05); group B vs E,P > 0. 05; group C vs A,P > 0. 05. The gap of group A was larger than that of group C( P < 0. 05). CONCLUSION: Air-abrasion combined with acid etching,resin adhesive and 3 M Z350 are more effective than traditional handpiece method in the preventive resin restoration.

关 键 词：预防性树脂充填 空气喷磨技术 流动树脂 微渗漏 Constic 

分 类 号：R781.05[医药卫生—口腔医学]