Year : 2020

Volume : Volume 11

Issue : Issue 2

Address for correspondence :
Dr. Mohammad Kashif Noorani.
mohammadKashifNoorani@gmail.com

Abstract

Background:  The facial outline and dental outline are esthetic factors used to determine the proper form of artificial teeth. The purpose of this study was to investigate the relationships between the facial outline and dental outline.  Material and methods: The outlines of the face and tooth were digitally traced and the digitized curved outlines were converted into X-Y coordinates with special software, which, in turn, were imported into Fourier Shape Descriptor software for harmonic analysis. The quantitative outputs of Fourier analysis were analyzed and tested with statistical software to investigate the differences across the shapes of the 3 outlines under study. Shade selection was done with Vita Easy Shade of the central incisor for each patient for analysis.  Results: Facial and tooth outlines were similar for each sex, although the similarity was stronger among the men. By contrast, no relationship was found between tooth and maxillary arch outlines or between face and maxillary arch outlines. A1 is the most common shade in both the sexes.  Conclusions: Face and tooth forms were quantitatively related.

Keywords: Fourier analysis, Maxillary central incisor, Spectrophotometric, Vita Easy Shade.