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KMID : 1037220140200020080
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Archives of Aesthetic Plastic Surgery
2014 Volume.20 No. 2 p.80 ~ p.84
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Outcome Analysis of Extended, Long, Curved Ostectomy with Outer Cortex Grinding for Prominent Mandibular Angle and Broad Chin to Achieve V-line Contouring
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Yoo Han-Su
Choi Se-Woon
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Abstract
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Background: In Asian countries, patients with a square-shaped lower face want a narrow chin as well as improvements in the mandibular angle contour, which is called a "V-line shape." Currently, various surgical techniques have been developed for mandibuloplasty.
Methods: We have developed an extended, long, curved ostectomy, which starts from the inferior mandibular margin below the lateral incisor to the angle, using reciprocating and oscillating saws. We also used a small round bur to grind the outer cortex of the chin and ramus. A total of 243 patients were included in this study from 2012 to 2014.
Results: To analyze aesthetic outcomes, we compared mandibular angles and gonial-gonial (G-G) distances on preoperative three-dimensional computed tomography scans with postoperative images. Mandibular measurements demonstrated significant increments in angle degrees on the right (115.2°±11.1 vs 129.3°±11.5, P<0.05) and left sides (112.2°±10.2 vs 130.4°±11.3, P<0.05). The G-G distance was reduced postoperatively from 123.7 mm±7.9 to 110.0 mm±3.5 (P<0.05).
Conclusions: In this study, we demonstrate the effectiveness of our technique and assume that we can improve frontal shape and lateral contour with its use.
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KEYWORD
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Mandible, Mandibular osteotomy, Orthognathic Surgery, Orthognathic surgical procedures
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