Purpose: To develop a computer-based method for automating the repositioning of jaw segments in the skull during three-dimensional virtual treatment planning of orthognathic surgery. The method speeds up the planning phase of the orthognathic procedure, releasing surgeons from laborious and time-consuming tasks.
Materials And Methods: The method finds the optimal positions for the maxilla, mandibular body, and bony chin in the skull. Minimization of cephalometric differences between measured and standard values is considered. Cone-beam computed tomographic images acquired from four preoperative patients with skeletal malocclusion were used for evaluating the method.
Results: Dentofacial problems of the four patients were rectified, including skeletal malocclusion, facial asymmetry, and jaw discrepancies.
Conclusions: The results show that the method is potentially able to be used in routine clinical practice as support for treatment-planning decisions in orthognathic surgery.
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http://dx.doi.org/10.1016/j.jcms.2017.06.017 | DOI Listing |
Otolaryngol Head Neck Surg
January 2025
Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina, USA.
Objective: To provide an updated evaluation of clinical effectiveness and sequelae of maxillomandibular advancement surgery in obstructive sleep apnea.
Data Sources: PubMed, Scopus, CINAHL.
Review Methods: Included studies described patients with obstructive sleep apnea that completed maxillomandibular advancement with any reported sequelae.
Acta Otorhinolaryngol Ital
December 2024
Orthodontics and Pediatric Dentistry Unit, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy.
Osteochondroma (OC) is a common bone tumour that rarely affects the mandibular condylar process. This pathology can show typical clinical features, such as facial asymmetry, deviation of the chin and dental inferior midline, changes in condylar morphology and malocclusion with an increased posterior mandibular vertical height. The management of condylar OC is a debated topic among surgeons.
View Article and Find Full Text PDFJ Prosthodont
January 2025
Department of Orthodontics & Dentofacial Orthopedics, Santa Barbara Facial Reconstruction, Santa Barbara, California, USA.
Obstructive sleep apnea (OSA) is characterized by intermittent cessation of breathing during sleep due to the collapse of oropharyngeal tissues. This review examines the role of craniofacial growth in OSA and evaluates the efficacy of orthodontic and orthognathic treatments. Maxillary expansion and orthognathic surgery have demonstrated significant reductions in sleep apneas and hypopneas, although they do not consistently achieve cure levels, particularly in the presence of obesity and connective tissue disorders.
View Article and Find Full Text PDFHeliyon
January 2025
Division of Oral and Maxillofacial Surgery, Faculty of Dentistry, Thammasat University, Pathum Thani, 12120, Thailand.
Objectives: To evaluate the accuracy (trueness and precision) of liquid crystal display (LCD)-printed orthognathic surgical splints under two different post-processing conditions-rinsing solvent and post-polymerization time.
Materials And Methods: An LCD 3D printer was used to create 48 surgical splints using the same reference standard tessellation language (STL) files. They were randomly assigned to two experimental studies.
PEC Innov
June 2025
Department of Clinical Psychology and Psychological Therapies, University of East Anglia, Norwich Medical School, Norwich, UK.
Objective: This study explored parents' experiences of the transition of responsibility to their child for healthcare decisions relating to their cleft lip and/or palate (CL/P).
Methods: Online semi-structured interviews were conducted with 11 participants (six females and five males, aged 41 to 60 years). They were parents of young people who had decided whether to undergo orthognathic surgery.
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