紫外线照射老化对渗透树脂处理釉质白垩斑颜色稳定性的影响  

Effect of ultraviolet aging on color stability of resin infiltration into enamel white spot lesion

作　　者：王涛[1] 苗雷英[2] 朱顶贵[1] 

机构地区：[1]南京大学医学院附属口腔医院儿童口腔科,江苏南京210008 [2]南京大学医学院附属口腔医院牙周科,江苏南京210008

出　　处：《口腔医学》2015年第12期1013-1015,共3页Stomatology

基　　金：国家自然科学基金青年项目(81300852);南京市卫生局一般项目(YKK08045)

摘　　要：目的评价紫外线照射老化对渗透树脂颜色稳定性的影响。方法选取前磨牙60颗,置于人工脱矿液中3d形成早期人工釉质龋,再随机分成3组,分别为对照组、渗透树脂处理组、涂氟处理组,将3组试件置于紫外线下照射老化,分别用色度计测量人工脱矿前、紫外线照射前、紫外线照射8、16、24 h的色度值CIE L*、a*、b*,分析色度值的变化。结果样本处理后,渗透树脂处理组与正常釉质的色差值ΔE*小于3.3,在紫外线照射老化后的8 h颜色发生了变化,16 h后颜色趋于稳定,颜色一直为肉眼无法分辨的色差范围内;对照组及涂氟处理组与正常釉质的色差值ΔE*均大于3.3,涂氟组相对于对照组来说,ΔE*减小,差异有统计学意义,在紫外线照射老化后,两组样本颜色无明显改变。结论渗透树脂能明显改善釉质白垩斑的美观,渗透治疗后的牙齿颜色短期稳定性满意。Objective To evaluate the color stability of resin infiltration after ultraviolet（ UV） aging. Methods 60 intact premolars were selected from orthodontic extraction,which were placed in the artificial demineralization solution for 3 days to form initial artificial enamel caries. The teeth were divided into 3 groups randomly： control（ CON）,resin infiltration（ RI） and fluoride treatment（ FLU）. Changes in color of test samples were determined before and after UV aging for 8,16 and 24 h using the CIE L＊ a＊ b＊ system by a colorimeter. Results After being treated with resin infiltration or fluoride treatment,the ΔE＊ of 3 groups was RI〈 FLU〈 CON（ P〈0. 05）,the ΔE＊ of group RI was less than 3. 3,but that of group CON and FLU were more than 3. 3. The color of samples from group RI showed a significant difference after UV aging for 8 h,and then kept stable,but the ΔE＊ still kept less than 3. 3. The color of group CON and FLU didn＇t show significant differences after UV aging. Conclusions Resin infiltration was proven to be a very effective treatment for masking white spot lesions,and the short-term effect is satisfactory.

关 键 词：渗透树脂 紫外线照射老化 颜色 

分 类 号：R781.05[医药卫生—口腔医学]