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The International Journal of Adult Orthodontics & Orthogathic Surgery
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Publication:
International Journal of Adult Orthodontics and Orthognathic Surgery

Year 1989
Volume 4 , Issue 2

Back
Pages: 75 - 84

Nasal anatomy and maxillary surgery. II. Unfavorable nasolabial esthetics following the Le Fort I osteotomy

O'Ryan/Schendel

The Le Fort I osteotomy is among the most commonly performed orthognathic surgical procedures for correction of skeletal dysplasia. Numerous authors have described unfavorable nasal and labial changes following maxillary surgery, such as widening of the alar bases of the nose, upturning of the nasal tip, flattening and thinning of the upper lip, and downturning of the commissures of the mouth. These postoperative changes in nasolabial morphology are secondary to alterations in the regional anatomy following skeletal repositioning, cartilaginous resectioning, muscular retraction, and the resultant effects of these procedures on the overyling skin and subcutaneous tissues. In part I of tis series a systematic method of evaluation and a detailed anatomic description of th e nasolabial region were presented. This paper presents a series of cases with unfavorable nasal changes following Le Fort I osteotomies, analyzes each case in detail, and disusses the possible etiologies. Part III of this series will rpesent techniques for handling of the skeletal, cartilaginous, and musculofascial components of the nasomaxillary region during the Le Fort I procedure to improve nasofacial esthetics and avoid unfaborable results.

 

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