University of Oulu

Podčernina, Jevgenija; Urtāne, Ilga; Pirttiniemi, Pertti; Šalms, Ģirts; Radziņš, Oskars; Aleksejūnienė, Jolanta. 2020. "Evaluation of Condylar Positional, Structural, and Volumetric Status in Class III Orthognathic Surgery Patients" Medicina 56, no. 12: 672.

Evaluation of condylar positional, structural, and volumetric status in class III orthognathic surgery patients

Saved in:
Author: Podčernina, Jevgenija1; Urtāne, Ilga1; Pirttiniemi, Pertti2,3;
Organizations: 1Department of Orthodontics, Rīga Stradiņš University, Dzirciema str. 20, LV-1007 Rīga, Latvia
2Department of Oral Development and Orthodontics, University of Oulu, 90014 Oulu, Finland
3Medical Research Center (MRC), Oulu University Hospital, 90014 Oulu, Finland
4Department of Oral and Maxillofacial Surgery, Rīga Stardiņš University, Dzirciema str. 20, LV-1007 Rīga, Latvia
5Department of Oral Health Sciences, Faculty of Dentistry, The University of British Columbia, Vancouver, BC V6T1Z3, Canada
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.3 MB)
Persistent link:
Language: English
Published: Multidisciplinary Digital Publishing Institute, 2020
Publish Date: 2021-03-01


Background and objectives: The need to evaluate the condylar remodeling after orthognathic surgery, using three-dimensional (3D) images and volume rendering techniques in skeletal Class III patients has been emphasized. The study examined condylar positional, structural, and volumetric changes after bimaxillary or single-jaw maxillary orthognathic surgeries in skeletal Class III patients using the cone-beam computed tomography. Materials and Methods: Presurgical, postsurgical, and one-year post-surgical full field of view (FOV) cone-beam computed tomography (CBCT) images of 44 patients with skeletal Class III deformities were obtained. Group 1 underwent a bimaxillary surgery (28 patients: 24 females and 4 males), with mean age at the time of surgery being 23.8 ± 6.0 years, and Group 2 underwent maxillary single-jaw surgery (16 patients: 8 females and 8 males), with mean age at the time of surgery being 23.7 ± 5.1 years. After the orthognathic surgery, the CBCT images of 88 condyles were evaluated to assess their displacement and radiological signs of bone degeneration. Three-dimensional (3D) condylar models were constructed and superimposed pre- and postoperatively to compare changes in condylar volume. Results: Condylar position was found to be immediately altered after surgery in the maxillary single-jaw surgery group, but at the one-year follow-up, the condyles returned to their pre-surgical position. There was no significant difference in condylar position when comparing between pre-surgery and one-year follow-up in any of the study groups. Condylar rotations in the axial and coronal planes were significant in the bimaxillary surgery group. No radiological signs of condylar bone degeneration were detected one year after the surgery. Changes in condylar volume after surgery were found to be insignificant in both study groups. Conclusions: At one year after orthognathic surgery, there were no significant changes in positional, structural, or volumetric statuses of condyles.

see all

Series: Medicina
ISSN: 1010-660X
ISSN-E: 1010-660X
ISSN-L: 1010-660X
Volume: 56
Issue: 12
Article number: 672
DOI: 10.3390/medicina56120672
Type of Publication: A1 Journal article – refereed
Field of Science: 313 Dentistry
3126 Surgery, anesthesiology, intensive care, radiology
Funding: This research was funded by the European Union’s Horizon 2020 research and innovation program under the grant agreement No 857287.
Copyright information: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (