title: Color Correlations among Six Types of Permanent Anterior Teeth.
abstract: When multiple teeth are missing, the color for missing teeth should be estimated based on the color of remaining teeth.
  
  
  
  The purpose was to determine the strength of color correlations among six types of permanent anterior teeth.
  
  
  
  Color of 12 anterior teeth was measured by Shade Vision System for 47 volunteers. The color coordinates in each type of teeth such as maxillary central incisor (MX1), lateral incisor (MX2), and canine (MX3), and mandibular central incisor (MD1), lateral incisor (MD2), and canine (MD3) were determined. Correlations and differences among the corresponding color coordinates of each type of teeth were determined.
  
  
  
  Compared with MX1, the differences were in the range of -3.2 to -6.5 in L*, 0.5 to 2.7 in a*, -0.7 to 7.5 in b*, and the color difference (ΔE*ab ) was 4.5 to 10.3. The color difference by ΔE00 formula was 3.1-6.7. Although the color coordinates were different by tooth type, they generally showed correlations (p < 0.001).
  
  
  
  For the color estimation of missing MX1, the color coordinates of MD1 were the strongest predictors. In case of missing MX3, L* and a* of MD3 and b* of MX1 were the strongest predictors for each corresponding coordinates.
  
  
  
  The color for missing teeth, especially for maxillary central incisor and maxillary and mandibular canines, could be estimated based on those of the same type teeth on the opposing arch. These results should be applied for clinical color selection for missing teeth.(J Esthet Restor Dent 28:S5-S13, 2016).
authors.affiliation: Director, Institute for Clinical Performance of Biomaterials (ICPB) and ETN Dental Clinic, Seoul, Korea.
authors.forename: Yong-Keun
authors.initials: YK
authors.lastname: Lee
mesh_terms: D000848:Anodontia / Q000628:therapy; D003116:Color; D003481:Cuspid; D003793:Dental Restoration, Permanent; D004955:Esthetics, Dental; D007180:Incisor; D008437:Maxilla