漂白剂的pH值对牙齿表面形貌和颜色的影响  

Influences of pH Values of Bleaching Agents on the Morphological Properties and the Color of Tooth

作　　者：阿依古丽.阿不都斯木 张祎一 李清[2] 王贻宁[2] 

机构地区：[1]武汉大学口腔生物医学教育部重点实验室.湖北省口腔基础医学重点实验室--省部共建国家重点实验室培育基地,湖北武汉430079 [2]武汉大学口腔医学院修复科

出　　处：《口腔医学研究》2014年第11期1051-1054,共4页Journal of Oral Science Research

基　　金：国家自然科学基金(编号:81100784)

摘　　要：目的:研究漂白剂的pH值对牙齿颜色和表面特性的影响,为临床应用提供实验依据。方法:50颗前磨牙包埋在环氧树脂中,近远中方向纵向剖开,由于部分牙齿在切割过程中损坏,获得颊部薄片和牙主体部分,得到35片颊侧切片。将试样随机分为5个组:DW组(阴性对照组)使用蒸馏水处理(pH=7.0);HCl组(阳性对照组)使用HCl处理(pH=3.0);HP3组、HP7组、HP8组分别使用pH值为3、7、8的30%过氧化氢溶液进行处理。用分光光谱仪测量颜色变化。扫描电镜观察釉质表面形貌改变。结果:漂白剂的pH值对漂白后的牙齿颜色有显著影响(P<0.0001)。根据Tukey Post-hoc多重检验,颜色变化顺序为:HP7>HP8>HP3>HCl>DW。HP7、HP8和DW三组的釉质表面均无明显形态学改变。HCI和HP3组釉质表面均呈明显的侵蚀外观。结论:不管是碱性还是中性漂白剂,对牙釉质表面特性均无明显影响。酸性漂白剂对牙釉质表面有较明显的侵蚀性,同时具有轻微的美白效果。Objective： To observe enamel surface color changing in different pH values of bleaching agents. Methods： Fifty premolars were embedded in epoxy resin and cut from the buccal aspect into two parts. The samples were randomly divided into 5 groups （n=10） , Group Hel （The negative control group）. treated with Hel solution （pH = 3. 0）. Group DW （The positive control group）. reserved in distilled water （pH = 7. 0）. Three treatment groups were treated using 30% hydrogen peroxide solutions with different pH values： Group HP3 （pH=3. 0）. Group HP7 （pH = 7. 0）. and Group HPS （pH = 8. 0）. Spectrophotometer measure was usedeto the color change. Scanning electron microscopy was used to observe the changes of the enamel surface morphology. Results： PH value had significant influence on the color of bleached teeth （P〈0. 0001）. According to the Tukey Post- hoc multiple test. the color change order was： HP7 〉 HP8〉 HP3 〉 HC1 〉 DW. The groups HC1 and HP3 showed obvious erosion appearance on the enamel surface. Conclusion： Either alkaline or neutral bleaching agent. had no significant effect on properties of the enamel surface. The enamel surface was obviously eroded by the low pH value of bleaching agents. which showed a slight whitening effect.

关 键 词：漂白剂 牙釉质 PH值 分光光谱仪 扫描电镜 

分 类 号：R783.9[医药卫生—口腔医学]