Clinical Comparative Study of Shade Measurement Using Two Methods: Dental Guides and Spectrophotometry

Author:

Alvarado-Lorenzo Alfonso1ORCID,Criado-Pérez Laura1ORCID,Cano-Rosás Mónica1,Lozano-García Eva2,López-Palafox Juan3,Alvarado-Lorenzo Mario4ORCID

Affiliation:

1. Department of Oral Surgery, Universidad de Salamanca, 37007 Salamanca, Spain

2. Department of Health Sciences, Miguel de Cervantes European University of Valladolid, 47012 Valladolid, Spain

3. Department of Dentistry, Universidad Alfonso X el Sabio, 28691 Villanueva de la Cañada, Spain

4. Department of Dentistry, Universidad Católica San Antonio de Murcia, 30107 Murcia, Spain

Abstract

Tooth color is a determining factor in the fabrication of dental prostheses. The aim of the present study is to compare two measurement methods used in the field of dentistry: dental guides and spectrophotometry. A total of 2768 natural teeth were measured using the Vita Classical and Vita 3D-Master dental guides (Vita-Zahnfabrik, Bad Säckingen, Germany), as well as a Vita Easyshade Compact spectrophotometer (Vita-Zahnfabrik). The measurements were carried out by one operator under suitable illumination conditions at 5500 degrees Kelvin. The obtained results show that the measurements obtained with the Vita Classical dental guide classifies teeth into the A-B categories, while the spectrophotometer preferentially classifies teeth into the B-C categories. The correlation coefficients obtained with the dental guides ranged from −0.32 to −0.39 (p < 0.01), while those for the spectrophotometer ranged from −0.35 to −0.55 (p < 0.01). Therefore, we can conclude that the spectrophotometer is more reliable and reproducible in its measurements than the dental guides.

Publisher

MDPI AG

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