氧化锆全瓷贴面修复重度变色前牙美学效果评价

发布时间：2019-07-03 15:00

【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P0.001,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。
[Abstract]:Objective: to observe the clinical effect of zirconia all-ceramic veneer in the repair of severe discolored anterior teeth. Methods: the anterior teeth with severe discoloration and small area defects were repaired with zirconia substrate all-ceramic veneer, and the normal anterior teeth with the same name were used as control teeth. A total of 15 teeth were repaired. The aesthetic effect of zirconia all-ceramic veneer was determined by measuring the color difference 螖 E between lip and neck 1 鈮，

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