Impacto da ocultação da escala de cor na prevalência de seleção de pranchetas do matiz A

Abstract

Material selection plays a pivotal role in aesthetic dental procedures and often involves a visual assessment using the classic VITA shade guide. However, this approach is inherently subjective and susceptible to cognitive biases. Experienced professionals in the field typically recognize that many dental shades can be associated with hue A. Yet, it remains unclear whether this knowledge influences the color selection process. The aim of this study was to investigate the impact of concealing shade guide tabs on evaluators' preferences for hue A. To achieve this, cylindrical samples were created using composites in four shades of hue A (A1, A2, A3, A4) and four from other hues (B1, B2, C2, D3). Fifteen dental students and 15 dentists participated in the study and were tasked with determining the color of the samples in a viewing booth illuminated by D65 lighting. Participants compared the color of the specimens with shade guide tabs, with these tabs either concealed or visible. The results revealed no significant differences between dental students and dentists, indicating that clinical experience did not affect the color selection process. Furthermore, concealing the shade guide tabs had no impact on the accuracy of color or hue determination. However, unobscured evaluations resulted in a notably higher percentage of selections favoring hue A (44%) compared to concealed evaluations (34%). In summary, although knowledge of color science in the shade guide tabs did not affect the accuracy of color selection, it influenced the tendency toward favoring hue A in the color selections made by the evaluators.