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A CLINICAL RESEARCH STUDY TO ASSESS THE DENTAL PROFESSIONAL’S SHADE MATCHING COMPETENCE BY USING ISHIHARA COLOR BLINDNESS 14 PLATE TEST

Dr Hamza Nazir Chohan, Anam Samreen, Dr. Shuaa Iftikhar

Objective: The objective of this clinical study was to evaluate and assess the shade matching proficiency of dental professionals under day and yellow light without being formally trained. Methods: We conducted this research at Allied Hosp Faisalabad (October 2017 to July 2018). We evaluated the dental professional’s ability to test the colour blindness with the help of fourteen plate test (Ishihara Color Blindness). We also used guidelines of Vita Pan Shade under two sources of light. Participants were divided into five equal groups including twenty participants in each group of dental students, dental interns, dental practitioners, dental technicians and prosthodontists. Every professional was assessed and compared through the same test (Ishihara Color Blindness Test). Every group matched three artificial maxillary shades visually by using the mentioned guidelines. Results: Total research sample of 100 participants was further subdivided into five groups including twenty participants in each group. The participants were in the age bracket of 18 – 50 years. We did not include the colour coefficient. The highest score was obtained by dental interns about the accurate matching of the shades. Ninety percent of the respondents were prosthodontist using light-yellow light, the dental practitioner (65%), dental interns (65%) did accurate matching of shade. Correct shade matching was not carried out by dental students and technicians. Conclusion: Dental students and prosthodontists were highly accurate in the shade matching process in the presence of light-yellow light source; whereas, dental interns were good in the normal daylight. It is preferable to use a visual method of shade matching as dental students and prosthodontists become dependent on the presence of light-yellow light source for the shade matching process. Keywords: Color Matching, Shade Matching, Ability, Color Blindness, Ishihara, Dental, Interns and Prosthodontists.

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