Preliminary communication
https://doi.org/10.15644/asc50/4/7
Influence of Light Conditions and Light Sources on Clinical Measurement of Natural Teeth Color using VITA Easyshade Advance 4.0® Spectrophotometer: Pilot Study
Ivona Posavec
; Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Vladimir Prpić
; Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Dubravka KNEZOVIĆ ZLATARIĆ
; Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Abstract
Objectives: The purpose of this study was to evaluate and compare lightness (L), chroma (C) and hue (h), green-red (a) and blue-yellow (b) character of the color of maxillary right central incisors in different
light conditions and light sources. Materials and methods: Two examiners who were well trained in digital color evaluation participated in the research. Intraclass correlation coefficients (ICCs) were used to analyze intra- and interobserver reliability. The LCh and L*a*b* values were determined at 08.15 and at 10.00 in the morning under three different light conditions. Tooth color was assessed in 10 subjects using intraoral spectrophotometer VITA Easyshade Advance 4.0® set at the central region of the vestibular surface of the measured tooth. Results: Intra- and interobserver ICC values were high for both examiners and ranged from 0.57 to 0.99. Statistically significant differences in LCh and L*a*b* values measured in different time of the day and certain light condition were not found (p>0.05). Statistically significant differences in LCh and L*a*b* values measured under three different light conditions were not found, too (p>0.05). Conclusions: VITA Easyshade Advance 4.0® is reliable enough for daily clinical work in order to assess tooth color during the fabrication of esthetic appliances because it is not dependent on light conditions and light sources.
Keywords
Incisor; Color; Color Perception; Spectrophotometry; Luminescent Measurements
Hrčak ID:
170927
URI
Publication date:
15.12.2016.
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