Validation of a Hyperspectral Imaging System for Color Measurement of In-Vivo Dental Structures
Metadatos
Mostrar el registro completo del ítemAutor
Tejada Casado, María de la Nativida; Ghinea, Razvan Ionut; Martínez Domingo, Miguel Ángel; Pérez Gómez, María Del Mar; Cardona Pérez, Juan De La Cruz; Ruiz López, Javier; Herrera Maldonado, Luis JavierEditorial
MDPI
Materia
Hyperspectral imaging Color Dentistry
Fecha
2022-11-09Referencia bibliográfica
Tejada-Casado, M... [et al.]. Validation of a Hyperspectral Imaging System for Color Measurement of In-Vivo Dental Structures. Micromachines 2022, 13, 1929. [https://doi.org/10.3390/mi13111929]
Patrocinador
MCIN/AEI/ERDF "Una manera de hacer Europa" PGC2018-101904-A-I00 PID2021128317OB-I00; Junta de Andalucia RDI P20-00200; OTRI 4744Resumen
A full comprehension of colorimetric relationships within and between teeth is key for aesthetic success of a dental restoration. In this sense, hyperspectral imaging can provide point-wise reliable measurements of the tooth surface, which can serve for this purpose. The aim of this study was to use a hyperspectral imaging system for the colorimetric characterization of 4 in-vivo maxillary anterior teeth and to cross-check the results with similar studies carried out with other measuring systems in order to validate the proposed capturing protocol. Hyperspectral reflectance images (Specim IQ), of the upper central (UCI) and lateral incisors (ULI), were captured on 30 participants. CIE-L*a*b* values were calculated for the incisal (I), middle (M) and cervical (C) third of each target tooth. Delta E-ab* and Delta E-00 total color differences were computed between different tooth areas and adjacent teeth, and evaluated according to the perceptibility (PT) and acceptability (AT) thresholds for dentistry. Non-perceptible color differences were found between UCIs and ULIs. Mean color differences between UCI and ULI exceeded AT (Delta E-ab* = 7.39-7.42; Delta E-00 = 5.71-5.74) in all cases. Large chromatic variations between I, M and C areas of the same tooth were registered (Delta E-ab* = 5.01-6.07 and Delta E-00 = 4.07-5.03; Delta E-ab* = 5.80-8.16 and Delta E-00 = 4.37-5.15; and Delta E-ab* = 5.42-5.92 and Delta E-00 = 3.87-4.16 between C and M, C and I and M and I, respectively). The use of a hyperspectral camera has proven to be a reliable and effective method for color evaluation of in-vivo natural teeth.