DIFFERENCES BETWEEN THE HUMAN EYE AND THE SPECTROPHOTOMETER IN THE SHADE MATCHING OF TOOTH COLOUR
Abstract
Objectives
The aim of this work was to assess the agreement between instrumental and visual color 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 color via
spectrophotometry and the visual shade selection method. According to
our results, there is better agreement in the value or lightness color
dimension, which is the most important one in the choice of tooth color.
Comments