两种方法对早期釉质脱矿治疗效果的体外实验研究  

The effects of an infiltrating resin and a fluorinated foam on incipient enamel demineralization-an in vitro study

作　　者：陈静[1,3] 马文盛(指导)[1] 王洁[1] 刘晔[1] 牛小雷[1] 温艳丛[2] 

机构地区：[1]河北医科大学口腔医院,河北省口腔医学重点实验室 [2]哈励逊国际和平医院口腔科 [3]北京市通州区新华医院口腔科

出　　处：《牙体牙髓牙周病学杂志》2014年第9期522-525,537,共5页Chinese Journal of Conservative Dentistry

摘　　要：目的:比较渗透性树脂和氟化泡沫对早期釉质脱矿后的治疗效果。方法:用部分饱和酸缓冲脱矿液将75个人离体前磨牙制备成早期釉质脱矿模型后随机分为3组(n=25),分别采用去离子水(A组)、氟化泡沫(B组)、渗透性树脂(C组)处理脱矿釉质表面;然后浸泡于人工唾液中37℃恒温水浴放置8周,治疗前和治疗后即刻、4周、8周各时间点用分光光度比色仪检测每个牙的L值;用扫描电镜观察治疗4周后的表面形态。结果:脱矿釉质经3种方法处理后其L值均较治疗前减小,C组减小的幅度最大,B组次之,A组最小,除治疗后即刻A组与B组△L无统计学差异(P>0.05)外,其余各时间点各组间△L差异均有统计学意义(P<0.05);A组和B组釉质表面粗糙而不均匀,其表面虽有矿物质沉积,但仍有大小不等的凹陷,而C组釉质表面较光滑均匀,无明显凹陷。结论:渗透性树脂和氟化泡沫均可治疗釉质早期脱矿,其中以渗透性树脂的短期效果最明显。AIM：To evaluate the effects of an infiltrating resin and a fluorinated foam on incipient enamel demineralization .METHODS：75 freshly extracted human premolars were made into artificial incipient enamel demi -neralization models .They were randomly divided into 3 groups （ n=25 ） and were treated with deionized water （ group A）, fluorinated foam（group B） and infiltrating resin（group C） respectively.Then they were immersed in artificial sa-liva for 8 weeks at 37 ℃.L value of each tooth was measured immediately, 4 weeks and 8 weeks after treatments by a spectrophotometer.Enamel surface was observed under scanning electron microscope （SEM） 4 weeks after treatment. RESULTS：The L value of all teeth decreased after treatment, the degree of △L value was in the following order：C〉B〉A.The L value was significantly different between groups at 4 and 8 weeks （P〈0.05） except between group A and B immediately after treatments .SEM observation showed that the samples in group C had smooth and homogenous enamel surface, while enamel surface was rough and uneven with hollows and mineral deposits in group A and B .CONCLU-SION：Both infiltrating resin and fluorinated foam have remineralizing effects on demineralized enamel surface, but the former is more effective in a short time.

关 键 词：釉质脱矿 再矿化 氟化泡沫 渗透性树脂 

分 类 号：R783.1[医药卫生—口腔医学]