To assess the stability of mandible position after orthognathic surgery for correction of class III skeletal malocclusion. Twenty adult males, aged 18 to 40 years, with Angle class III skeletal malocclusion underwent preoperative orthodontic treatment for elimination of dental compensations followed by combined maxillomandibular surgery with rigid internal fixation. Lateral cephalograms from each patient, obtained in the natural head position before surgery, immediately after surgery, and at 6-month follow-up, were retrieved from the files of the Pontifical Catholic University of Rio Grande do Sul outpatient Oral and Maxillofacial Surgery clinic and compared. Comparison of craniometric landmark measurements showed that the precision of mandibular setback was compromised in the horizontal plane, with a mean mandibular relapse of 37.75% at point B and 45.85% at point Pg. Improved intercuspation and adaptation of the musculature to the new position of the jaws after orthognathic surgery lead to counterclockwise rotation of the mandible, ultimately displacing the mandible more anteriorly than desired.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/SCS.0000000000003311 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Analysis of Dynamic Mandibular Movement of Patients With Condylar Hyperplasia Treated With Orthognathic Surgery and Condylectomy.
J Craniofac Surg
January 2025
Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology.
Objective: To assess the dynamic mandibular movement of patients with condylar hyperplasia before and after simultaneous orthognathic surgery and condylectomy through an intraoral approach.
Methods: Two groups of patients diagnosed with unilateral condylar hyperplasia were studied: the preoperative group consisted of 23 patients and the postoperative group consisted of 13 patients who had undergone simultaneous orthognathic surgery and condylectomy through an intraoral approach with follow-up for more than 1 year. The normal reference value was obtained from 11 individuals without oral and maxillofacial diseases.
Aesthetic Enhancement in Vertical Maxillary Excess by a Combined Orthodontic and Surgical Approach.
Cureus
December 2024
Orthodontics and Dentofacial Orthopedics, Manav Rachna Dental College, Manav Rachna International Institute of Research and Studies, Faridabad, IND.
Vertical maxillary excess (VME) is a facial condition characterized by an increased height in the lower third of the face, leading to a longer overall facial appearance. This condition is linked to a significant proportion of malocclusions and is often associated with greater dissatisfaction among patients concerning their appearance. The amalgamation of orthodontics with surgery is a desirable protocol to address VME.
View Article and Find Full Text PDFCamouflage Orthodontic Treatment of a Severe Class III Malocclusion.
Case Rep Dent
January 2025
Department of Orthodontics, School of Dentistry, Sefako Makgatho Health Sciences University, Pretoria, South Africa.
Class III malocclusion remains the most challenging occlusal problem to treat due to the complexity of the interrelationships of the underlying skeletal and dental structures. Camouflage orthodontic treatment is a preferred alternative method used to manage mild to moderate Class III malocclusion in nongrowing patients. The aim of this article was to demonstrate a camouflage orthodontic treatment of a 22-year-old female patient diagnosed as having a severe skeletal Class III malocclusion characterized by a straight facial profile, reverse overjet, crowded maxillary incisors, retrognathic maxilla, prognathic mandible, and a hypodivergent facial pattern.
View Article and Find Full Text PDFObjectives: To examine tooth root length and root volume in cone beam computed tomography (CBCT) images in patients with skeletal Class II and III anomalies who have undergone single-jaw (SJ) and double-jaw (DJ) orthognathic surgery, and to compare the changes between jaws with and without osteotomy.
Materials And Methods: This study was conducted on the archive records of a total of 60 adults: 36 women and 24 men with an average age of 21.1 ± 3.
Automatic Reproduction of Natural Head Position in Orthognathic Surgery Using a Geometric Deep Learning Network.
Diagnostics (Basel)
December 2024
Department of Applied Bioengineering, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Republic of Korea.
: Accurate determination of the natural head position (NHP) is essential in orthognathic surgery for optimal surgical planning and improved patient outcomes. However, traditional methods encounter reproducibility issues and rely on external devices or patient cooperation, potentially leading to inaccuracies in the surgical plan. : To address these limitations, we developed a geometric deep learning network (NHP-Net) to automatically reproduce NHP from CT scans.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!