Color perception among different dental personnel

Area of Science:

• Dental Materials Science
• Color Science in Dentistry
• Visual Perception

Background:

• Accurate shade matching is crucial for aesthetic dental restorations.
• Variations in color perception among dental professionals can impact clinical outcomes.
• Understanding these differences is essential for improving dental education and practice.

Purpose of the Study:

• To investigate and compare color perception differences among various dental personnel groups.
• To identify specific shades and color parameters where perception discrepancies are most significant.
• To analyze the contribution of lightness (L*) values to observed color differences.

Main Methods:

• Four groups of dental personnel (technicians, students, general practitioners, prosthodontists) participated.
• Participants matched seven Z100 shade tabs against a Vita shade guide under controlled lighting.
• Color data (L*a*b*) were measured using a colorimeter, and analyzed with ANOVA and Scheffe's test.

Main Results:

• Significant differences in color difference (deltaE) were found between dental technicians and clinicians for shade C4.
• Disparities in lightness (L*) values were the primary cause for observed deltaE differences in darker shades.
• A significant difference in deltaL* was specifically noted between dental technicians and prosthodontists for shade C4.

Conclusions:

• Dental personnel exhibit varying color perception capabilities, impacting shade matching accuracy.
• Darker shades, particularly C4, reveal the most significant perception differences.
• Discrepancies in lightness perception are a key factor contributing to inaccurate shade matching among dental professionals.