A Spectrophotometric Color Evaluation of Natural Teeth and Gingival

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Objectives: The aim of the present study was to evaluate the color of natural teeth and gingival in anterior maxillary using a new spectrophotometer.
Materials and Methods: Thirty four patients with 52 healthy natural teeth and gingival in anterior maxillary were recruited. The color at four positions of each tooth (incisal 1/3, body1/3, cervical 1/3 and gingival) were assessed using a spectrophotometer (SpectroShadeTM, Micro Dental, Seria No. HDL3214, MHT, S.p.A, Italy) in CIELab coordinates. Descriptive statistics of Spss17.0 was used to analyze the distribution of color coordinates. Pearson correlation was used to test the relationship between the coordinates and age. Independent t test was used to test the difference between gender groups.
Results: All the color coordinates for teeth and gingival were in right-left symmetric distribution by the central incisors and the distribution was in same mode at each tooth. The body part of the central incisor had the highest L value and the cervical part of the canine had the highest a, b value. No statistical difference was found among positions regarding the gingival color. Statistical correlation was found between the gingival color and the cervical part of crown, regarding the L, a,b value respectively (L: r=.293, p=.035, a: r=.361, p=.009, b: r=.363, p=.008). No correlation was found between gingival color and age. No significandifference was found between genders, regarding to either crown or gingival color.
Conclusions: The color coordinates of the teeth and gingival in anterior maxillary area evaluated by the the spectrophotometer in this study showed a regular and characteristic distribution, which could be taken as clinical reference.
Original languageMultiple languages
JournalHuaxi Kouqiang Yixue Zazhi
Publication statusSubmitted - 2012

ID: 43500378