Cristina Gómez-Polo1, Miguel Gómez-Polo2, Alicia Celemin-Viñuela3, Juan Antonio Martínez Vázquez De Parga4. 1. Department of Dentistry, School of Medicine, University of Salamanca, Spain. Electronic address: crisgodent@usal.es. 2. Department of Orofacial Prosthesis, Faculty of Dentistry, University Complutense of Madrid, Spain. Electronic address: miguelodon@hotmail.com. 3. Department of Orofacial Prosthesis, Faculty of Dentistry, University Complutense of Madrid, Spain. Electronic address: acelemin@odon.ucm.es. 4. Department of Orofacial Prosthesis, Faculty of Dentistry, University Complutense of Madrid, Spain. Electronic address: mtzvdep@odont.ucm.es.
Abstract
OBJECTIVES: The aim of this work was to assess the agreement between instrumental and visual colour matching. METHODS: Shade selection with the 3DMaster Toothguide (Vita-Zahnfabrik) was performed for 1361 maxillary central incisors and compared with the shade obtained with the EasyShade Compact (Vita-Zahnfabrik) spectrophotometer. RESULTS: We observed a greater correlation between the objective method and the subjective one in the colour dimension of lightness (Kappa 0.6587), followed by hue (Kappa 0.4337) and finally chroma (Kappa 0.3578). CONCLUSION: The colour dimension in which the greatest agreement is seen between the operator and the spectrophotometer is value or lightness. CLINICAL SIGNIFICANCE: This study reveals differences between the measurement of colour via spectrophotometry and the visual shade selection method. According to our results, there is better agreement in the value or lightness colour dimension, which is the most important one in the choice of tooth colour.
OBJECTIVES: The aim of this work was to assess the agreement between instrumental and visual colour matching. METHODS: Shade selection with the 3DMaster Toothguide (Vita-Zahnfabrik) was performed for 1361 maxillary central incisors and compared with the shade obtained with the EasyShade Compact (Vita-Zahnfabrik) spectrophotometer. RESULTS: We observed a greater correlation between the objective method and the subjective one in the colour dimension of lightness (Kappa 0.6587), followed by hue (Kappa 0.4337) and finally chroma (Kappa 0.3578). CONCLUSION: The colour dimension in which the greatest agreement is seen between the operator and the spectrophotometer is value or lightness. CLINICAL SIGNIFICANCE: This study reveals differences between the measurement of colour via spectrophotometry and the visual shade selection method. According to our results, there is better agreement in the value or lightness colour dimension, which is the most important one in the choice of tooth colour.
Authors: Cristina Gómez Polo; Miguel Gómez Polo; Javier Montero; Juan Antonio Martínez Vazquez De Parga; Alicia Celemin Viñuela Journal: Int Dent J Date: 2015-07-27 Impact factor: 2.607