Two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery

Background: Vertical subsigmoid osteotomy (VSSO) for ramus setback has been suggested to exert less stress onto the condylar head causing more positive bone remodelling changes in the postoperative phase. However, it is unclear if the setback amount has any effect on the remodelling pattern. Object...

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Main Authors:	Choi, Wing Shan, Subramaniam, Pram Kumar
Format:	Conference or Workshop Item
Language:	English
Published:	Elsevier 2017
Subjects:	RK Dentistry
Online Access:	http://irep.iium.edu.my/57537/ http://irep.iium.edu.my/57537/ http://irep.iium.edu.my/57537/ http://irep.iium.edu.my/57537/24/57537-abstract%26schedule.pdf

id	iium-57537
recordtype	eprints
spelling	iium-575372018-03-09T04:09:15Z http://irep.iium.edu.my/57537/ Two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery Choi, Wing Shan Subramaniam, Pram Kumar RK Dentistry Background: Vertical subsigmoid osteotomy (VSSO) for ramus setback has been suggested to exert less stress onto the condylar head causing more positive bone remodelling changes in the postoperative phase. However, it is unclear if the setback amount has any effect on the remodelling pattern. Objectives: This study aims to compare the postsurgical quantitative and qualitative condylar remodelling changes in various setback magnitudes using two-dimensional (2D) and threedimensional (3D) radiography. Methods: Retrospective pre- and postoperative radiographic data of patients with mandibular prognathism that had undergone VSSO from 2007 to 2012 at the Prince Philip Dental Hospital were traced. 130 postero-anterior and lateral cephalographs, along with 174 cone-beam computed tomography (CBCT) scans were retrieved. 2D and 3D radiographic tracing were performed to measure the condyle-ramal morphometric values. Pre- and postoperative CBCT rendered condyle ramus segments were superimposed based on stable growth registration points to observe zonal and topographic changes. Findings and Conclusion: 2D radiographic tracing did not show significant condyle-ramal changes in different setback magnitudes. 3D radiographic tracing showed significant changes in axial condylar depth with more setback. Topography analysis also showed that in the postero-superior condylar surface, more bone deposition was found in larger setback. In the axial plane, the bone formation proportion at the condylar head was significantly increased in mid-anterior and posteromedial zones with larger setback except in the group with setback between 4.1–6 mm. In general the condylar remodelling pattern after VSSO for mandibular setback was considered to be stable despite various setback magnitudes. Elsevier 2017-03 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/57537/24/57537-abstract%26schedule.pdf Choi, Wing Shan and Subramaniam, Pram Kumar (2017) Two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery. In: 23rd International Conference on Oral and Maxillofacial Surgery, 31st March-3rd April 2017, Hong Kong. http://www.ijoms.com/article/S0901-5027(17)30595-7/pdf 10.1016/j.ijom.2017.02.534
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	RK Dentistry
spellingShingle	RK Dentistry Choi, Wing Shan Subramaniam, Pram Kumar Two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery
description	Background: Vertical subsigmoid osteotomy (VSSO) for ramus setback has been suggested to exert less stress onto the condylar head causing more positive bone remodelling changes in the postoperative phase. However, it is unclear if the setback amount has any effect on the remodelling pattern. Objectives: This study aims to compare the postsurgical quantitative and qualitative condylar remodelling changes in various setback magnitudes using two-dimensional (2D) and threedimensional (3D) radiography. Methods: Retrospective pre- and postoperative radiographic data of patients with mandibular prognathism that had undergone VSSO from 2007 to 2012 at the Prince Philip Dental Hospital were traced. 130 postero-anterior and lateral cephalographs, along with 174 cone-beam computed tomography (CBCT) scans were retrieved. 2D and 3D radiographic tracing were performed to measure the condyle-ramal morphometric values. Pre- and postoperative CBCT rendered condyle ramus segments were superimposed based on stable growth registration points to observe zonal and topographic changes. Findings and Conclusion: 2D radiographic tracing did not show significant condyle-ramal changes in different setback magnitudes. 3D radiographic tracing showed significant changes in axial condylar depth with more setback. Topography analysis also showed that in the postero-superior condylar surface, more bone deposition was found in larger setback. In the axial plane, the bone formation proportion at the condylar head was significantly increased in mid-anterior and posteromedial zones with larger setback except in the group with setback between 4.1–6 mm. In general the condylar remodelling pattern after VSSO for mandibular setback was considered to be stable despite various setback magnitudes.
format	Conference or Workshop Item
author	Choi, Wing Shan Subramaniam, Pram Kumar
author_facet	Choi, Wing Shan Subramaniam, Pram Kumar
author_sort	Choi, Wing Shan
title	Two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery
title_short	Two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery
title_full	Two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery
title_fullStr	Two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery
title_full_unstemmed	Two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery
title_sort	two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery
publisher	Elsevier
publishDate	2017
url	http://irep.iium.edu.my/57537/ http://irep.iium.edu.my/57537/ http://irep.iium.edu.my/57537/ http://irep.iium.edu.my/57537/24/57537-abstract%26schedule.pdf
first_indexed	2023-09-18T21:21:20Z
last_indexed	2023-09-18T21:21:20Z
_version_	1777411902224203776

Two-dimensional and three-dimensional postsurgical temporomandibular joint condylar remodelling following vertical subsigmoid osteotomy setback surgery

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