TY  - JOUR
T1  - Effect of Visual Impairment on Tooth Color Determination: A Clinical Comparison of Objective and Subjective Methods
A1  - Hiroshi Tanaka
A1  - Yuki Sato
A1  - Kenji Mori
A1  - Rina Okabe
A1  - Takashi Ito
JF  - Bulletin of Pioneering Researches of Medical and Clinical Science
JO  - Bull Pioneer Res Med Clin Sci
SN  - 3006-2659
Y1  - 2026
VL  - 6
IS  - 1
DO  - 10.51847/j5Io1IKkPH
SP  - 40
EP  - 47
N2  - Tooth shade determination plays a critical role in the overall success of dental restorations, yet visual impairment can negatively affect its accuracy. The objective of this cross-sectional clinical study was to evaluate the potential impact of visual impairment on shade selection by employing two distinct approaches: spectrophotometry and conventional shade guides. The study sample comprised 2796 maxillary and mandibular teeth. Shade selection was assessed subjectively using a shade guide (VITA Classic, VITA Zahnfabrik) and objectively with a spectrophotometer (VITA Easyshade® V, VITA Zahnfabrik, Bad Säckingen, Germany). For each tooth, three separate measurements were recorded, allowing a 15 min interval between consecutive samples. Comparisons of shade selection were made between observers exhibiting normal vision and those with myopia, astigmatism, or hyperopia. Findings revealed that myopic observers perceived the lower central incisors (2.63, P < 0.05), upper lateral incisors (2.42, P < 0.05), lower lateral incisors (2.34, P < 0.05), and lower canines (2.64, P < 0.05) with greater clarity. In addition, non-astigmatic subjects rated the lower second premolar as lighter compared with astigmatic subjects (−2.01, P < 0.05). Individuals with myopia tend to perceive teeth more clearly; however, no significant differences were observed among those with astigmatism or hyperopia.
UR  - https://bprmcs.com/article/effect-of-visual-impairment-on-tooth-color-determination-a-clinical-comparison-of-objective-and-sub-ghxemlktfjvppim
ER  -