用于无创性充填治疗的传统玻璃离子水门汀对体外釉质脱矿的抑制效果评价  

The efficacy Evaluation of glass ionomer cement on inhibition demineralization of enamel in vitro

作　　者：冯超[1] 高炜[2] 

机构地区：[1]中日友好医院口腔科,北京100029 [2]北京大学医学部口腔医学院,北京100081

出　　处：《中日友好医院学报》2004年第4期213-216,共4页Journal of China-Japan Friendship Hospital

摘　　要：目的 :评价传统的玻璃离子水门汀所产生的 ,特别是用于无创伤充填治疗技术时抑制体外釉质脱矿的能力。方法 :二十四颗由于正畸治疗拔除的完整的恒前磨牙 ,在釉质颈部作洞型预备。这些牙齿分别用FujiIX ,FujiIXGP ,Ketac Molar和复合玻璃充填材料充填 ,将它们放在 5℃～ 5 5℃的温度下循环处理 30 0次 ,后放在放在脱矿溶液 (含有 1g/l的溶解的羟磷灰石的 0 .1M的乳酸 ,pH为 4 .7)中四个星期。沿牙齿的长轴经充填体作平行于颊舌平面的切片 ,切片的厚度大约为 10 0 μm。用偏振光显微镜检测这些切片 ,用图像分析软件分析病损大小 ,ANOVA和变异系数用于比较结果。结果 :复合玻璃和Ketac Molar比其它两种水门汀的表面腐蚀性小 (P <0 .0 1)。用玻璃离子水门汀瞬间接触充填体边缘抑制釉质脱矿的能力 (2 0 .5 %～ 2 5 .0 % )较复合玻璃材料强 (13.0 % )。但是 ,抑制带的宽度因材料和位置的不同而有变异。结论Objective:To assess the ability of conventional glass ionomer cements manufactured specifically for the atraumatic restorative treatment(ART) approach to inhibit the demineralization of enamel in vitro.Methods:Twenty-four sound permanent premolar teeth,extracted for orthodontic reasons,had cervical cavities drilled in enamel.These were restored with Fuji IX, Fuji IXGP Ketac-Molar and Compoglass, and then thermocycled 300 times between 5-55℃ before being placed in a demineralizing solution (0.1 M lactic acid with 1g/L dissolved hydroxyapatite at pH 4.7) for four weeks. Buccolingual planoparallel sections were cut axially through the restorations,and subsequently ground to appoximately 100 μm in thickness.The sections were examined with a polarized light microscope,and lesion measurements made using image analysis software.ANOVA and coefficients of variance were used to compare the findings.Results:Compoglass and Ketac-Molar showed significantly less surface erosion than did the other two kinds of cements(P<0.01).Inhibition of enamel demineralization immediately adjacent to the restoration margins was more frequent with the glass ionomer cements(20.5%～25.0%) than with Compoglass (13.0%).However,the widths of the inhibition zones varied between materials and sites.Comclusions:Fluoride ion release from the restorative materials afforded some degree of protection to the adjacent enamel against in vitro demineralization.

关 键 词：抑龋 玻璃离子 无创伤性充填治疗 正畸治疗 

分 类 号：R781.05[医药卫生—口腔医学]