氧化锆全瓷贴面修复重度变色前牙美学效果评价  

Preliminary clinical evaluation of the esthetic effect of deep discolored anterior teeth restored with zirconia veneers

作　　者：周团锋[1] 王新知[2] 刘婧寅 孙庆[3] 王鑫开 ZHOU Tuan-feng WANG Xin-zhi LIU Jing-yin SUN Qing WANG Xin-kai(First Clinical Division Department of Prosthodontics The Second Division of Dental Technical Lab, Peking University School and Hospital of Stomatology ＆ National Engineering Laboratory for Digital and Material Technology of Stomatology ＆ Beijing Key Laboratory of Digital Stomatology, Beijing 100034, China)

机构地区：[1]北京大学口腔医学院.口腔医院第一门诊部,北京100034 [2]北京大学口腔医学院.口腔医院修复科,北京100034 [3]北京大学口腔医学院.口腔医院义齿加工中心二部口腔数字化医疗技术和材料国家工程实验室口腔数字医学北京市重点实验室,北京100034

出　　处：《北京大学学报（医学版）》2016年第6期1055-1059,共5页Journal of Peking University:Health Sciences

基　　金：北京大学口腔医院临床新技术新疗法重点项目(PKUSSNCT-14A10)资助~~

摘　　要：目的:观察氧化锆全瓷贴面修复重度变色前牙的临床修复效果。方法:选取牙体治疗后重度变色小面积缺损的前牙,采用氧化锆基底全瓷贴面修复,同名正常前牙为对照牙,共修复15颗患牙。测量修复前后患牙唇侧颈1/3、中1/3、切1/3与对照牙色差ΔE值,明确氧化锆全瓷贴面的美学效果;参照美国公共卫生署(United States Public Health Service,USPHS)的标准观察患牙修复完成后的边缘适合性,以及修复体的折裂、脱落等。结果:重度变色前牙氧化锆全瓷贴面修复前与对照牙颈1/3、中1/3、切1/3色差ΔE值分别为24.92±3.00、26.64±4.00和21.94±3.31,均明显高于4.0,为临床所不接受;修复后唇侧切1/3、中1/3与对照牙色差ΔE值分别为1.82±0.17和1.84±0.21,均小于2.0,有良好的匹配性,颈1/3色差ΔE值为3.92±0.48,稍小于4.0,在临床可接受的范围。患牙颈1/3、中1/3、切1/3修复前后与对照牙色差ΔE值配对t检验,t值分别为30.37、21.56和23.37,均P<0.001,修复前后患牙颜色差异有统计学意义。修复体有良好的边缘适合性,均为A级,在观察期间,修复体完整,无折裂和脱落。结论:氧化锆全瓷贴面可作为重度变色前牙患牙美观修复的一种选择,但对于美学效果要求过高的患者要慎重使用。Objective： To observe the esthetic effect of deep discolored anterior teeth restored by zirconia veneers. Methods： Small defected deep discolored anterior teeth with complete root canal therapy were restored by zirconia veneers（ n = 15）. The same name teeth on the other side of the same dental arch were chosen as control teeth. The color difference values ΔE of the neck 1 /3,the middle 1 /3 and the incisor 1 /3 between the deep discolored tooth and the normal control tooth before and after therapy were measured to evaluate the esthetic effect of zirconia veneer restoration. At the same time,the marginal fit of zirconia veneers was checked by the standard of United States Public Health Service（ USPHS）.The integrity of the veneers was also examined. Results： On the labial side,fibers color difference valuesΔE of the neck 1 /3,the middle 1 /3 and the incisor 1 /3 between deep discolored teeth and normal control teeth were measured by the electronic colorimeter,which were 24. 92 ± 3. 00,26. 64 ± 4. 00 and 21. 94 ±3. 31 respectively. All the values were above 4. 0,which were considered unacceptable in clinic. After restoration by zirconia veneers,the color difference values ΔE of the middle 1 /3 and the incisor 1 /3 between the restored and control teeth were 1. 82 ± 0. 17 and 1. 84 ± 0. 21. Both values were less than 2. 0,which indicated both good color matching. The color difference value ΔE of the neck 1 /3 was 3. 92 ±0. 48,which was less than 4. 0 and could be accepted in clinic. The statistical analysis of the colors of the teeth before and after restoration compared with the control teeth was done by Paired t test. The t values in the neck 1 /3,the middle 1 /3 and the incisor 1 /3 were 30. 37,21. 56,23. 37 respectively. In the three group,all the P〈0. 001. There were obvious statistical differences. According to the standard of USPHS,the marginal fit of all the restored teeth was perfect（ grade A）. No zirconia veneers were broken or detached in the period of observation. Conclusion�

关 键 词：牙变色 锆 牙科陶瓷 

分 类 号：R783.9[医药卫生—口腔医学]