Shade-matching abilities of dental laboratory technicians using a commercial light source

Area of Science:

• Dental technology
• Color science in prosthodontics

Background:

• Accurate shade matching is crucial for dental restorations.
• Conventional laboratory lighting may not provide optimal conditions for shade assessment.
• The impact of standardized lighting on dental shade matching requires further investigation.

Purpose of the Study:

• To evaluate dental laboratory technicians' shade-matching accuracy.
• To compare shade matching under conventional laboratory lighting versus a light-corrective device.
• To assess the influence of technician experience and gender on shade matching.

Main Methods:

• A 14-item shade-matching quiz (SMQ) was administered to 42 dental technicians.
• Technicians completed the SMQ twice: under their laboratory's lighting and with a light-corrective source.
• Shade-matching accuracy was scored based on correct Vita shade tab selection; statistical analyses were performed.

Main Results:

• Technicians achieved significantly higher SMQ scores using the light-corrective device (12.0 ± 1.9) compared to laboratory lighting (10.0 ± 2.0).
• No significant correlation was found between years of experience and SMQ scores.
• There were no significant gender-based differences in shade-matching scores; Vita C shades were least accurately matched.

Conclusions:

• A light-corrective device enhances dental technicians' shade-matching abilities compared to conventional laboratory lighting.
• Technician gender and years of experience were not significant factors in shade-matching performance.
• Specific shade groups, such as Vita C, present challenges for accurate color reproduction in dental laboratories.