Akademik Veri Yönetim Sistemi
24. Uluslararası Estetik Diş Hekimliği Kongresi , İstanbul, Türkiye, 23 - 25 Ekim 2020, ss.1-11
Background: According to "biomimetic
approach", the changes in the formulations of new composite resin
materials that imitate dental tissues, create differences in the reflection,
absorption and refraction of light. Therefore, the correct determination of
tooth color using new materials is an important step in the success of an
aesthetic restoration. The aim of the present study is to evaluate the
consistency of hue, value and chroma values determined with a color scale
under different lighting conditions.
Methods: The color determination of right
upper incisors of total of 100 patients (52 female and 48 male) who applied to
Istanbul University Restorative Dentistry Department, were examined by 3
different observers with Vitapan 3D Toothguide Master color scale under
different lighting conditions such as reflector light, daylight and Demetron
Shade Light (Kerr). In addition, the results were converted into the Vita
Classic color scale and evaluated as well. The data were analyzed in the SPSS
program.
Results: “Value”s were found to be
significantly consistent under reflector and Demetron lighting compared to
other groups (p<0.05). Hue and chroma values were found to be
significantly consistent under daylight and Demetron lighting compared to other
groups (p<0.05). Color evaluation results of all lighting conditions were
found to be significantly more consistent in the Vita Classic color scale (11%)
compared to the Vitapan 3D Toothguide Master scale (2%). While D3 color key was
matched more in all groups, in the light colors, A1 color was matched almost
all groups. The consistency in demetron and reflector lighting is mostly seen in
dark colors (D3). There was no significant difference between light and dark
colors in daylight / demetron and daylight / reflector groups (p>0,05).
Conclusion: According to the results
determined by the 3D Toothguide shade master under all 3 lighting conditions,
the least success was achieved in determining the saturation (chroma) ratios of
colors. In the color determination of the Vita Classic scale, dark colors were
the most consistent. To conclude, the consistency in the color detection of the
observers depends on the lighting condition and color scale. The
spectrophotometer, which can obtain objective and numerical data, can be used
along with other methods in color determination.
Keywords: Lighting conditions, Tooth color,
Color assessment, Color guide.