IP Annals of Prosthodontics and Restorative Dentistry


“Shade selection: spectrophotometer vs digital camera – a comparative in-vitro study”


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Author Details: Dhruv Anand, Surendra Kumar G.P, Devanshi Yadav Anand, Manoj Kumar Sundar, Rahul Sharma, Amit Gaurav

Volume : 2

Issue : 3

Online ISSN : 2581-480X

Print ISSN : 2581-4796

Article First Page : 73

Article End Page : 78


Abstract

Shade determination may be precisely performed with spectrophotometers, however this technique is time consuming and requires special devices. The aim of this study was to ascertain if digitally acquired images with an SLR camera can be used as an alternative to the VITA easyshade spectrophotometer for obtaining the shade of the teeth. Twenty extracted anterior tooth samples were analysed to determine the L*, a*, b* values with a spectrophotometer. The same samples were imaged with a digital camera, and same colour parameters were determined on the digital images with a software. Statistical analysis was performed using pearson coefficient of correlation. It was observed that the L* and b* values obtained by both the methods were highly significant (r≥0.7, p≤0.05) with r = 0.798 (p=0), r = 0.858 (p=0) whereas ‘a’ value was not significant with r=0.246 (p=0.377). It can be concluded that an SLR camera with Adobe photoshop CS5.1 as an adjunct can be used as an alternative to spectrophotometer in obtaining ‘l’ and ‘b’ values accurately.

Keywords:
Digital analysis, Spectrophotometric analysis, Colour analysis, Cielab