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BMC Oral Health
January 2025
Affiliated Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, People's Republic of China.
Objective: The aim of this study was to establish a three-dimensional finite element (FE) hydraulic pressure technique model and compare the biomechanical characteristics of the osteotome technique and the hydraulic pressure technique using three-dimensional finite element analysis (FEA).
Methods: Three FE models were created: the hydraulic pressure technique (M1), the osteotome technique with a Ø 1.6-mm osteotome (M2), and the osteotome technique with a Ø 3.
J Dent Sci
January 2025
School of Dentistry, China Medical University, Taichung, Taiwan.
Background/purpose: Studies have indicated that 50%-55% of the population have malocclusion, and approximately 5%-10% require orthognathic surgery to correct this condition. Optimal placement of plates and screws significantly affects the success rate of the surgery and postoperative stability. This study evaluates the cortical thickness of the maxillary bone in the nasomaxillary and zygomaticomaxillary buttress regions in Taiwanese patients based on cone-beam computed tomography (CBCT) images.
View Article and Find Full Text PDFJ Clin Med
January 2025
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Gazi University, 06490 Ankara, Turkey.
: This study aimed to compare the effects of surgically assisted rapid palatal expansion (SARPE) techniques and their combinations on the stresses (von Mises, maximum principal, and minimum principal) and displacements that occur in the maxilla, facial bones, and maxillary teeth using three-dimensional finite element analysis (FEA). : SARPE was simulated using seven different osteotomy techniques. The FEA models were simulated with a combination of various osteotomies, including midpalatal and lateral osteotomies, lateral osteotomy with a step, and separation of the pterygomaxillary junction.
View Article and Find Full Text PDFOrthod Fr
December 2024
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Introduction: The cant of the occlusal plane in the frontal plane reflects facial asymmetry. Its treatment requires close collaboration between the orthodontist and the maxillofacial surgeon. In case of mild cant, treatment consists in coordination of dental arches followed by mandibular osteotomy.
View Article and Find Full Text PDFJ Craniofac Surg
January 2025
Department of Oral and Maxillofacial Surgery, College of Dentistry, University of Baghdad, Bab- Almoadham, Medical City.
Pterygomaxillary separation (PMS) is an important step in Le Fort I osteotomy procedure, without which complete mobilization of the maxilla cannot be achieved. The aim of this study was to evaluate PMS patterns and their relationship with the anatomic measurements in Le Fort I osteotomy. In this prospective observational study cone beam computed tomography (CBCT) was used to measure the anatomic variables of the pterygomaxillary junction (PMJ) region including thickness, width, the distance between the most concave point at the lateral surface of PMJ and the greater palatine foramen (C-GPF), and the angle preoperatively, and the separation patterns postoperatively divided into the clean-cut type, maxillary sinus type, and the pterygoid fracture type.
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