Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

Changes of tooth color in adults by aging

증령에 따른 치아색조 변화

  • Lee, Jung-Jun (Department of Prosthodontics, School of Dentistry, Chonbuk National University) ;
  • Kim, Kil-Su (Department of Prosthodontics, School of Dentistry, Chonbuk National University) ;
  • Min, Kwan-Sik (Department of Prosthodontics, School of Dentistry, Chonbuk National University) ;
  • Ahn, Seung-Geun (Department of Prosthodontics, School of Dentistry, Chonbuk National University) ;
  • Park, Chan-Woon (Department of Prosthodontics, School of Dentistry, Chonbuk National University)
  • 이정준 (전북대학교 치과대학 치과보철학교실) ;
  • 김길수 (전북대학교 치과대학 치과보철학교실) ;
  • 민관식 (전북대학교 치과대학 치과보철학교실) ;
  • 안승근 (전북대학교 치과대학 치과보철학교실) ;
  • 박찬운 (전북대학교 치과대학 치과보철학교실)
  • Published : 2003.06.30
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Abstract

The purpose of this study was to obtain the color change information for natural tooth of all age groups. Fifty Korean subjects(25 men and 25 women) were randomly selected for this study. They were ranged in age from 24 to 67 years old and were classified into 5 age groups for each sex: 20 to 29, 30 to 39, 40 to 49, 50 to 59, 60 to 69 years. Maxillary central incisor of each subject free from obvious discoloration and restorations on the sites to be measured was selected. Three sites on the labial surface, incisal, middle, cervical area were measured and a circular area of 1.0mm in diameter was measured at each site by the spectrophotometer. The obtained results of this study were as follows: 1) Natural tooth color showed a significant decrease in linghtness($L^*$) at the cervical site(P<0.05). 2) Red/green chromaticity($a^*$) showed a significant increase at all sites(P<0.01). But it was not enough to have a statistic significance among three sites by aging. 3) Yellow/blue chromaticity($b^*$) showed an increase at all sites(P<0.05). But it didn't change significantly among three sites by aging.

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