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Aim: The aim of this study was to establish the most and least pleasing lip position and to evaluate esthetic preference in profile view among the South Indian population with diverse facial divergence. Materials and Methods: Photographs of 12 participants with an average lip position were taken, and original lip position (Image C) was altered by ± 2 mm and ± 4 mm from the original position of upper and lower lips using Adobe Photoshop 7.0 version. Image A and Image B comprised photographs with retrusive lips of 4 mm and 2 mm, respectively, and Image D and Image E comprised photographs with protrusive lips of 2 mm and 4 mm, respectively. The altered photographs were evaluated for pleasing lip positions by 300 examiners which comprised 102 orthodontists, 107 general dentists, and 91 laypersons. Results: A questionnaire was conducted through Google Forms, and the examiners favored Image C with an average lip position as the most desired lip position, whereas Image E with 4-mm lip protrusion and Image A with 4-mm lip retrusion were the least desired irrespective of gender or facial divergence. Conclusion: Importance to establish appropriate soft-tissue esthetics is the primary concern of an orthodontic treatment. [ABSTRACT FROM AUTHOR]

Aim: The aim of this study is to evaluate the association between the mandibular divergent patterns and soft tissue chin (STC) thickness measured at different chin levels in nongrowing patients. Methodology: Pretreatment lateral cephalograms of 400 adult patients were segregated into four groups based on mandibular divergence pattern defined by the mandibular plane to cranial base angle (average 32° ± 5°), Group I with low angle (below 27°), Group II with medium low angle (28°-32°), Group III with medium high angle (33°-36°), and Group IV with high angle (above 37°). STC thickness was measured between Pog-Pog' (pogonion), Gn-Gn' (gnathion), and Me-Me' (menton), thickness and height of the upper and lower lips were also measured. Statistical analysis was done using one-way analysis of variance followed by post hoc Tukey analysis. Results: A significant difference in the STC thickness at Pog, Gn, and Me was observed among all four groups with hyperdivergent patterns, showing decreased STC thickness than the hypodivergent mandibular pattern. Thickness of the upper and lower lips was greater in hypodivergent mandible, whereas height of the lips was greater in hyperdivergent mandible. [ABSTRACT FROM AUTHOR]