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24 November 2017 : Clinical Research  

The Influence of Class II Division 2 Malocclusions on the Harmony of the Human Face Profile

Tatjana Perović12ABCDEFG*

DOI: 10.12659/MSM.905453

Med Sci Monit 2017; 23:5589-5598

Abstract

BACKGROUND: Persons with class II division 2 malocclusion are characterized by a very specific dento-skeletal and soft-tissue profile (a profile in which a protruding nose and chin, retruding lips, concave and shortened lower third of the face, and gummy smile are dominant), which is the opposite of the currently modern profiles (convex profile of protruding lips and small chin). The aim of this research was to determine the differences in parameters of harmonies of facial profiles between persons with class II division 2 malocclusions and class I, and to establish the significance of those differences.

MATERIAL AND METHODS: For this study, 50 patients with class II division 2 malocclusions and 50 patients with class I were selected; profile photos were recorded and a photometric analysis was done: a type of profile according to Schwarz, the shape of a nose, the prominence of chin, biometrical field, the position of lips in relation to the tangent Sn-Pg, S-line (Steiner), E-line (Riketts) and a facial angle according to Arnett.

RESULTS: The significant differences in profiles of persons with class II division 2 compared to class I were: position and prominence of the chin, the position of the lower and upper lip in relation to the S-line, and smaller value of a facial angle in relation to persons with class I.

CONCLUSIONS: The differences seen in skeletal profiles were not associated with significant differences in the profiled facial contours of the examined groups. The compensatory role of the fullness of soft tissues of the lips is probably the reason why there were not significant deviations in all the examined parameters.

Keywords: Beauty, Facial Expression, Malocclusion, Angle Class II

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750