Comparison of Shade Match Compatibility between Vitapan Classical and 3D Master Shade Guide Systems by Dental Students in Tabriz Faculty of Dentistry

Ramin Negahdari, Alireza Pournasrollah, Mahdi Rahbar, Sepideh Bohlouli, Seyyed Mahdi Vahid Pakdel Vahid Pakdel


Background and Aims: Dentists perform color-match process during indirect and direct restorations. Color research has shown that shade guides do not always match the color of natural teeth. Moreover, visual evaluation of dental colors has been found to be inconsistent and unreliable. In fact, it has always been important when using different shade guides. Our purpose in this study was to compare shade selection using two shade guide systems of Vitapan Classical and 3D Master by dental students of Tabriz University of Medical Sciences. Materials and methods: In this analytical, cross-sectional descriptive study, 20 male and 20 female senior dental students with a little clinical experience in working with shade guides were selected. Each student used two shade guides (Vitapan Classical and 3D Master) separately for shade matching. Shade selection was randomly repeated one week later by the same protocol. T-test was used to compare repeatability of color matching (α=0.05). Comparison of the repeatability percentage was done with t-test. Results: Comparison of repeatability percentages of shade matching irrespective of gender showed that percentage of repeatability of shade match in 3D Master system was significantly high (P=0.00). In addition comparison of repeatability means of shade match with different shade guide systems on the basis of gender showed no significant differences (P=0.68). Conclusion: In general, the repeatability percentages of shade matching in 3D Master system was high and shade matching in females with this system was not different than males.


Key words: Color vision; indirect restorations; dental students

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