Methods:The color of 150 maxillary incisors and its metal ceramic restorations was measured by MinoltCR 321 chromaticity instrument(D65 daylight simulator inside),the color reproduction ratio was calculated with CIE 1976 L*a*b* system.

 
  • 方法 :用美能達 CR- 32 1色差計 (D6 5光源 )以 CIE1976 - L* a* b*色度系統分別對 15 0個(gè)上頜中切牙及其金瓷修復體色度值進(jìn)行測色、計算色彩復現率并進(jìn)行統計。
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