Changes in condylar volume and joint spaces after orthognathic surgery.

Autor: da Silva RJ; Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas Areião, Piracicaba, São Paulo, Brazil. Electronic address: roberto.juns.silva@usp.br., Valadares Souza CV; Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas Areião, Piracicaba, São Paulo, Brazil., Souza GA; Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas Areião, Piracicaba, São Paulo, Brazil., Ambrosano GMB; Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas Areião, Piracicaba, São Paulo, Brazil., Freitas DQ; Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas Areião, Piracicaba, São Paulo, Brazil., Sant'Ana E; Department of Surgery, Stomatology, Pathology and Radiology, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil., de Oliveira-Santos C; Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas Areião, Piracicaba, São Paulo, Brazil; Department of Stomatology, Public Oral Health and Forensic Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Jazyk: angličtina
Zdroj: International journal of oral and maxillofacial surgery [Int J Oral Maxillofac Surg] 2018 Apr; Vol. 47 (4), pp. 511-517. Date of Electronic Publication: 2017 Nov 02.
DOI: 10.1016/j.ijom.2017.10.012
Abstrakt: The aim of this study was to evaluate the changes in condylar volume and joint spaces occurring in patients undergoing bimaxillary orthognathic surgery for the treatment of class II deformities, by means of cone beam computed tomography (CBCT). Initial and follow-up (at least 6 months) CBCT examinations of 114 condyles (57 patients) were studied retrospectively. Linear measurements of the joint space and volumetric analysis of changes in condylar volume were performed using Dolphin 3D Imaging in association with ITK-SNAP 3.0.0 segmentation software. The paired t-test and Pearson correlation coefficient were applied, and a descriptive analysis was performed. Mean condyle volumes were significantly smaller at follow-up (P=0.0125). There were significant reductions in superior and medial joint spaces in the follow-up examinations (both P<0.05). Positive correlations were found when comparing the mean changes in anterior, superior, and posterior space values between the right and left sides. No significant correlation was observed between changes in volume and joint spaces. In conclusion, there was a reduction in mean condylar volume after orthognathic surgery in class II patients. However, changes in volume for each condyle may be variable. Such changes in condylar volume may occur independently on the left and right sides, and do not correlate with changes in joint spaces.
(Copyright © 2017 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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