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Condylar resorption following mandibular advancement or bimaxillary osteotomies: A systematic review of systematic reviews - 14/03/22

Doi : 10.1016/j.jormas.2022.03.008 
David Togninalli, Gregory S. Antonarakis, Jean-Paul Schatz
 Department of Orthodontics, University Clinic of Dental Medicine, Faculty of Medicine, University of Geneva, Switzerland 

En prensa. Pruebas corregidas por el autor. Disponible en línea desde el Monday 14 March 2022
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Highlights

This systematic review is an attempt to collate all the currently available scientific evidence on condylar resorption following mandibular advancement or bimaxillary osteotomies.
Available data suggest that condylar resorption occurs more frequently in young women and those undergoing bimaxillary surgery especially with anterior mandibular rotation.
With regard to morphologic characteristics, data suggest correlations between condylar resorption and a large mandibular plane angle.
The scientific weight of these correlations is compromised by the low-level quality of the currently available data.
Further well-designed prospective studies on this topic should be carried out to increase the quality level of new systematic reviews and meta-analyses.

El texto completo de este artículo está disponible en PDF.

Abstract

Several systematic reviews have been published on the effects of mandibular surgery on condylar remodeling without reaching a consensus. The purpose of this systematic review of systematic reviews was to assess the impact of mandibular advancement or bimaxillary surgeries on condylar resorption.

A literature search, using several electronic databases, was carried out by two reviewers independently. Article preselection was based on titles and abstracts, and final article selection based on full-text analysis of preselected studies. After final study selection, the quality of studies was assessed using the AMSTAR 2 tool. A decision algorithm was subsequently established to choose the best body of evidence.

From an initial yield of 1′848 articles, 23 systematic reviews were identified for further analysis, with ten studies being included in the final selection. Despite the generally low quality of the reviews, certain associations could be made: young patients, female patients, and those with a high mandibular plane angle are more prone to condylar resorption following mandibular advancement osteotomies, especially if anterior rotation of the mandible is performed during surgery. Patients undergoing bimaxillary surgery also appear to have a higher risk of developing condylar resorption.

In conclusion, these results confirm the multi-factorial nature of condylar resorption, stressing the need for well-controlled prospective studies with long-term follow-up to clearly identify potential risk factors associated with orthognathic surgery.

El texto completo de este artículo está disponible en PDF.

Keywords : Orthognathic surgical procedure, Mandibular osteotomy, Mandibular condyle, Bone resorption, Systematic review


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© 2022  The Authors. Publicado por Elsevier Masson SAS. Todos los derechos reservados.
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