Evaluation of vertical ramus osteotomy for the surgical correction of unilateral mandibular posterior vertical insufficiency: Long-term follow-up results

Unilateral posterior vertical insufficiency (PVI) is a growth defect of the mandibular condyle that results in a facial asymmetry. Various surgical procedures can be used to elongate the hypoplastic ramus. The aim of this study was to evaluate long-term aesthetic and architectural outcomes of vertic...

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Bibliographic Details
Published in:Journal of cranio-maxillo-facial surgery 2020-04, Vol.48 (4), p.349-356
Main Authors: Anquetil, Marine, Mercier, Jacques, Leveau, Sophie, Mrabet, Sarah, Durand, Thomas, Salagnac, Jean-Michel, Perrin, Jean-Philippe, Corre, Pierre, Bertin, Hélios
Format: Article
Language:English
Subjects:
Dentistry
Hemifacial microsomia
Malocclusion
Mandibular condyle
Mandibular osteotomy
Orthognathic surgery
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Summary:Unilateral posterior vertical insufficiency (PVI) is a growth defect of the mandibular condyle that results in a facial asymmetry. Various surgical procedures can be used to elongate the hypoplastic ramus. The aim of this study was to evaluate long-term aesthetic and architectural outcomes of vertical ramus osteotomy (VRO) in patients with unilateral PVI. Patients operated on with unilateral VRO were included in this retrospective study. Aesthetic and architectural parameters were evaluated on frontal photographs as well as on frontal and lateral cephalograms preoperatively, postoperatively, at 1-year and at the end of the follow-up. A total of 48 patients were analyzed. The aesthetic assessment revealed significant correction of the chin deviation (CD) and of the lip commissural line tilt after VRO (p1 = 0.0038 and p2 = 0.0067, respectively) with stable results. The architectural analysis revealed significant improvement in the maxillary and mandibular occlusal planes, as well as the chin deviation (p 
ISSN:1010-5182
1878-4119
DOI:10.1016/j.jcms.2020.02.013