Analysis of Taiwanese gingival color and it''s application on clinical prosthodontics.

• Main Authors: Jhih-Wei Huang, 黃志偉
• Other Authors: Chuen-Cheng Hung
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/36371363217759549861

博士 === 高雄醫學大學 === 牙醫學研究所 === 100 === The “color” is an integral part of esthetic dentistry. In conception of dental prosthetics, technique of tooth-color matching has developed fast and almost to maturation until now. However, it’s apparent that there is lack of enough studies in gingiva-color matching and no one effectively system for clinical application that supported by studies had developed. The purpose of this study is to analyze distribution and difference of Taiwanese gingival color though precise measurement and statistical analysis, and to develop a new gingival color matching system for clinical application. We use the most precise method, a reflectance spectrometer, and an external light source were set up in a 45/0 degree optical configuration to measure the color of gingiva. A total of 362 human subjects with healthy gingiva were divided into groups according to sex and age. The Commission Internationale de l‘Eclairage L*, a*, and b* (CIELAB) values and differences in color (ΔE) were measured. A two-way analysis of variance (ANOVA) test and cluster analyses were used to analyse the data. Results: There are significant differences in the gingival color by sex (ΔE > 3.7). The mean CIE L* value of female gingiva is significantly higher than that of male gingiva ( p < 0.05). No significant differences were found between age groups. 10 categories for gingival color are established. Conclusion: The gingival color of females is lighter than that of males. The proposed color classification can be used as a gingival shade guide reference by dental laboratory technicians. We need much further studies to support the data of gingival color, a more precised color matching system and even a gingival colorimeter.