Document Type : مقاله‌های پژوهشی

Authors

• Ramin Mosharraf ¹
• Nasrollah Bashardoost ²
• Pirooz Givehchian ³
• Dana Tahririan ⁴
• Fatemeh Hajian ⁵

¹ Professor, Dental Materials Research Center, Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

² Professor, Department of Biostatistics and Epidemiology, Ali-ebn-Abitaleb School of Medicine, Islamic Azad University, Yazd Branch, Yazd, Iran

³ Assistant Professor, Dental Implants Research Center, Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

⁴ Assistant Professor, Dental Materials Research Center, Department of Pediatric Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

⁵ DDs, Isfahan, Iran

Abstract

Introduction: Dentists’ awareness about the rules of light and color makes it possible to deliver restorations coordinated with the patient's tooth color. The aim of this study was to evaluate the performance of dentists in relation to the principles of light and color to select the color of teeth.
Materials & Methods: This descriptive/cross-sectional study was performed on a random sample of 200 dentists in Isfahan by using a questionnaire with 36 questions. The responses to the questions in the questionnaire were scored. The scores were analyzed statistically with Kolmogorov‒Smirnov and chi-squared tests (α=0.05).
Results: The surrounding atmosphere color in most dental offices was bright. Dentists and assistants wore white uniforms in most cases. Most dentists used to select the teeth color under a light source, but increasing the number of light sources increased the success rate (p value < 0.01). Most dentists selected the tooth colors in the afternoon, but the color selection was not correlated with success rate (p value = 0.220). Most dentists chose the color in over one minute. In half of the cases, the dentist selected the color and in the other half it was selected in partnership with assistants. Most dentists chose the color after carrying out dental prophylaxis. Tooth color selection was carried out in most cases while the patient was standing near the window, with the teeth and the surrounding tissues being wet. Most dentists were not aware of the differences in lighting conditions between the dental office and the laboratory.
Conclusion: Most dentists were in the moderate group in terms of following the rules of light and color selection. Although this is somewhat acceptable, color selection should be improved through continuous education programs.
Key words: Color, Color perception, Dental porcelain, Dentist, Lighting.