Computer-assisted surgical planning and simulation for unilateral condylar benign lesions causing facial asymmetry

Abstract Objective The purpose of this study was to investigate the best surgical sequence for the treatment of unilateral condylar benign lesions causingfacial asymmetry by the application of computer-assisted surgical planning and simulation. Study Design Computer tomography (CT) data from 12 pati...

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Bibliographic Details
Published in:Oral surgery, oral medicine, oral pathology and oral radiology oral medicine, oral pathology and oral radiology, 2017-04, Vol.123 (4), p.453-458
Main Authors: Lu, Chuan, DDS, MS, He, Dongmei, DDS, MD, Yang, Chi, DDS, MD, Huang, Dong, DDS, MS, Ellis, Edward, DDS, MS
Format: Article
Language:English
Subjects:
Adult
Computer Simulation
Dentistry
Facial Asymmetry - etiology
Facial Asymmetry - surgery
Female
Humans
Male
Middle Aged
Orthognathic Surgical Procedures
Osteotomy, Le Fort
Osteotomy, Sagittal Split Ramus
Retrospective Studies
Software
Surgery
Surgery, Computer-Assisted
Temporomandibular Joint Disorders - complications
Temporomandibular Joint Disorders - surgery
Tomography, X-Ray Computed
Treatment Outcome
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Summary:Abstract Objective The purpose of this study was to investigate the best surgical sequence for the treatment of unilateral condylar benign lesions causingfacial asymmetry by the application of computer-assisted surgical planning and simulation. Study Design Computer tomography (CT) data from 12 patients whose maxillary cant were corrected by maintaining the vertical position of the central incisors and equally intruding the long side of the maxilla and extruding theshort side were analyzed by ProPlan CMF 1.4 software (Materialise Medical, Leuven, Belgium). Condylectomy and double jaw orthognathic surgery with two different surgical sequences were simulated: 1) maxillary LeFort I osteotomy first (MaxF), then condylectomy, followed by bilateral sagittal split ramus osteotomy (BSSO); 2) mandible first (ManF) which begins with condylectomy, then BSSO, and lastly LeFort I osteotomy. The greatest space between the maxillary and mandibular first molar in the interim positions was measured virtually to compare the two surgical sequences. Results The vertical distance between the upper and lower teeth of ManF patients was significantly smaller than MaxF (mean, 2.99 mm, p
ISSN:2212-4403
2212-4411
DOI:10.1016/j.oooo.2016.11.013