【摘要】：目的:觀察氧化鋯全瓷貼面修復(fù)重度變色前牙的臨床修復(fù)效果。方法:選取牙體治療后重度變色小面積缺損的前牙,采用氧化鋯基底全瓷貼面修復(fù),同名正常前牙為對(duì)照牙,共修復(fù)15顆患牙。測(cè)量修復(fù)前后患牙唇側(cè)頸1/3、中1/3、切1/3與對(duì)照牙色差ΔE值,明確氧化鋯全瓷貼面的美學(xué)效果;參照美國(guó)公共衛(wèi)生署(United States Public Health Service,USPHS)的標(biāo)準(zhǔn)觀察患牙修復(fù)完成后的邊緣適合性,以及修復(fù)體的折裂、脫落等。結(jié)果:重度變色前牙氧化鋯全瓷貼面修復(fù)前與對(duì)照牙頸1/3、中1/3、切1/3色差ΔE值分別為24.92±3.00、26.64±4.00和21.94±3.31,均明顯高于4.0,為臨床所不接受;修復(fù)后唇側(cè)切1/3、中1/3與對(duì)照牙色差ΔE值分別為1.82±0.17和1.84±0.21,均小于2.0,有良好的匹配性,頸1/3色差ΔE值為3.92±0.48,稍小于4.0,在臨床可接受的范圍�；佳李i1/3、中1/3、切1/3修復(fù)前后與對(duì)照牙色差ΔE值配對(duì)t檢驗(yàn),t值分別為30.37、21.56和23.37,均P0.001,修復(fù)前后患牙顏色差異有統(tǒng)計(jì)學(xué)意義。修復(fù)體有良好的邊緣適合性,均為A級(jí),在觀察期間,修復(fù)體完整,無(wú)折裂和脫落。結(jié)論:氧化鋯全瓷貼面可作為重度變色前牙患牙美觀修復(fù)的一種選擇,但對(duì)于美學(xué)效果要求過(guò)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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