فهرست نشریات علمی دسترسی آزاد ایران

Background and objectives: Choosing the wrong shade is a common reason for the failure of prosthetic treatments. Shade selection ability varies from person to person and in different situations. The current study aimed to evaluate tooth shade selection ability and repeatability among dental students in the School of Dentistry, Zahedan University of Medical Sciences and to assess the effect of gender, academic year, and wearing eyeglasses, or contact lenses on shade perception. Materials and methods: In this cross-sectional study, each student selected the shades of mid-cervical and mid-incisal parts of the maxillary canine tooth of a patient using the Vita Classical shade guide (Vita zahnfabrikBad, Säckingen, Germany) and their ability was evaluated as poor, moderate, or good. After one month, the shade selection was repeated for the same patients to examine shade selection repeatability. The Chi-square and Fisher’s exact tests were applied to analyze the data (P < 0.05). Results: The final sample consisted of 60 students: 28 sixth-year students (12 males, 16 females) and 32 fifth-year students (12 males, 20 females). It was observed that 75% and 25% of the students had poor and moderate shade selection abilities, respectively. None of the participants showed good ability. Intra-rater repeatability was 10%. There was no statistically significant association between shade-selection ability with any of the variables of shade-selection repeatability (P = 0.16), gender (P = 0.22), academic year (P = 0.07), and the use of eyeglasses (P = 0.48) or contact lenses (P = 1.00). Conclusion: Considering the poor shade selection ability and repeatability among dental students in Zahedan City, actions should be taken to develop educational interventions concerning shade selection. Gender, academic year, and wearing eyeglasses or contact lenses did not have a significant effect on shade perception.