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Quintessence Publishing: Journals: ORTHODONTICS
ORTHODONTICS
The Art and Practice of Dentofacial Enhancement

Formerly World Journal of Orthodontics

Edited by
Rafi Romano, DMD, MSc (Editor-in-Chief)

ISSN 2160-2999 (print) / ISSN 2160-3006 (online)

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Publication:
Fall 2010
Volume 11 , Issue 3

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Prediction Of Soft Tissue Profile Changes Following Orthodontic Retraction Of Incisors In Iranian Girls

Ahmad Sodagar, DDS, MS/Darab Gholami Borujeni, DDS/Gholamhosein Amini, DDS

Pages: 262268
PMID: 20877736

Aim: To study the relationship between incisor retraction and soft tissue profile alterations and to identify and quantify the parameters that influence it. Methods: Pre- and posttreatment lateral cephalograms of 37 Class I and Class II Division 1 Iranian females in whom at least one maxillary premolar was bilaterally extracted were analyzed and compared. Results: Significant positive correlations were found between retraction of the maxillary and mandibular incisors and posterior movement of the upper lip (r = 0.53, P < .001), the lower lip (r = 0.63, P < .001), thickness increase of the upper (r = 0.59, P < .001) and lower (r = 0.69, P < .001) lip, increase of the soft tissue lower anterior face height (r = 0.81, P < .001) and lower soft tissue component (r = 0.49, P < .001), and an increase of the nasolabial angle (r = 0.43, P < .01). The ratio of maxillary incisor to upper lip retraction was 2:1. Conclusion: In Iranian girls, a strong correlation exists between anterior tooth retraction and the position and configuration of both lips. World J Orthod 2010;11:262268.

Key words: prediction, profile, incisor retraction, lip position, extraction therapy

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