Abstract
Aim: Although visual color determination is the most frequently applied method in dentistry, instrumental color analysis offers advantages like objectivity, measurability and rapidity. The aim of this study was to evaluate the natural teeth color in teeth without any restoration visually, and by using a computerized shade measuring and analyzing system in the population. Materials and Methods: 202 patients were inspected. Before instrumental shade matching visual matching was done by the inspector with Vitapan 3D Master Shade Guide in the day light. Images were taken with computerized shade measuring and analyzing system from patients ' natural right or left maxillary incisors and canines without any restoration. Then these images were evaluated by the original software of its own. Results: Value differences between visual and instrumental shade matching were statistically significant. Darker value levels were obtained with instrumental measurement. The distribution of hue was more reddish in instrumental examination than visual examination. Significant difference was found at cervical and middle third of the tooth in both visual and instrumental determination of chroma. Chroma of the tooth was higher at these two regions in visual assessment. Conclusions: Teeth colors were distributed more uniform in visual shade matching compared to instrumental matching. However, some teeth shades were more common in instrumental matching. Value scores were found higher with instrumental shade matching. Individual selection of shades for each tooth and different regions of a tooth instead of a single color is considered to be a factor to increase the success of the restoration.
Highlights
The esthetics of a restoration depends on shape, surface form, translucency, and color
Teeth colors were distributed more uniform in visual shade matching compared to instrumental matching
Some teeth shades were more common in instrumental matching
Summary
The esthetics of a restoration depends on shape, surface form, translucency, and color. Color assessment and reproduction remains one of the most challenging aspects of the esthetic dentistry; matching of a restoration to existing tooth enamel is not predictable. When the color is measured by a visual technique, the considered color is compared with a large set of color tabs. Dental shade guides are commonly used to evaluate tooth color in restorative procedures. A shade guide is composed of a set of shade tabs intended to cover the range of colors present in the human dentition. The successful achievement of a clinically acceptable color match between a given tooth and a shade tab is closely related to the spectral coverage of the shade guide, clinician’s experience and the viewing environment.
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