冷光美白治疗正畸托槽粘结部位色斑疗效的实验研究

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1、冷光美白治疗正畸托槽粘结部位色斑疗效的实验研究冷光美白治疗•正畸托槽粘结部位色斑疗效的实验研究［摘耍］目的：研究冷光美白治疗对正畸后托槽粘结部位不规则色斑的疗效。方法：离体牙20颗，分成A、B两组，各10颗。A组酸蚀后采用牙釉质粘结剂剂粘结托槽，B组直接采用玻璃离子粘结。将两组离体牙人工染色4周后，拆除托槽并进行冷光美白处理。处理前后分别采用Crystaleye分光光度记型全牙比色仪测量x［关键词］冷光美白；正畸；托槽；染色；色斑；色差［中图分类号1R783［文献标识码］A［文章编号］1008-6455(2014)15-

2、1281-03Theexperimentalstudyoftheeffectofbeyondcold-lightwhiteningonthestainsintheadhesiveareaoforthodonticbracketsZHANGHai-yanl,XINGXu~na2,GUODong-xiao2(1.DepartmentofProsthodontics,ZhengzhouStomatologyHospital,Zhengzhou450000,Henan,China；2.DepartmentofProsthodon

3、tics,SchoolofStomatology,ZhengzhouUniversity)Abstract：0bjectiveTostudythecurativeeffectofcold-lightwhiteningontheirregularstainsofthebondedareaoforthodonticbracketsafterbeingfixed.MethodsThemethodistodivide20vitroteethintogroupAandgroupB,eachincluding10.Thebracke

4、tsofgroupAareboundedwithenameladhesiveafteretching,whileglassionicisuseddirectlybygroupB.Afterbeingdyedforfourweekstheteetharetakenout・Thebracketsareremovedandwhitenedbycold-light.Thecolorimetricvalueofthesamplesismeasuredbeforeandafterthetreatmentthroughthespect

5、rophotometriccolorcomparator,recordthemeasuredL*,a*,b*,andthechromaticaberrationdeltaEiscalculatedrespectivelybeforeandafterwhitening.SPSS17.0softwareisusedtomakeastatisticalanalysis・ResultsThechromaticaberrationdeltaEinthetwosamplesisbothabove3.7.L^value,a^value

6、b^valuechangeobviously,whichhavestatisticalsignificance(P<0.05)；Thedifferencesbetweenthevaluesofchromaticaberrationbeforeandafterwhiteningtreatmentinbothsampleareofnostatisticalsignificance(P>0.05)・ConclusionCold-lightwhiteningtreatmentcaneffectivelyremovetheirre

7、gularstainsintheboundedareaoforthodonticbrackets・Keywords：cold-lightwhiteningtreatment；orthodontictreatment；bracket；dye；stains越來越多的成年人和青少年通过正畸治疗获得了排列整齐的牙齿[1],但正畸治疗后托槽粘结部位经常会出现不规则的色斑或颜色加重现象，严重影响了美观，因此正畸治疗后美白治疗成为患者的迫切要求。木研究通过评价冷光美口对正畸治疗后不同粘结材料托槽粘结部位色斑的疗效,以期为临床正畸患者矫

8、治后的牙齿美口治疗提供一定的理论基础和临床指导。1资料和方法1・1一般资料：离体前磨牙20颗。纳入标准：选择患者年龄14〜28岁，正畸拔除的活髓前磨牙，牙体完整无隐裂、舗坏，无结石、色素沉着；牙面颜色均匀，非四环素牙、氟斑牙等。前磨牙托槽20个(MASEL公司，美国)。1.2仪器与试剂：Beyond冷光美白仪、Cry