Tooth transposition is a rare positional anomaly that may create many orthodontic problems. Its etiology is an enigma. The occurrence of mandibular canine/lateral incisor transposition is a relatively rare anomaly. Two rooted canine/rotated incisor transposition has not been reported previously in the clinical dental literature. We describe a case with transposition of a mandibular two rooted canine and a lateral incisor with 180 degrees rotation. Possible causes such as trauma and tooth agenesis were absent in this case. Due to the root anomaly, we consider that our case may have a genetic etiology. Although the mandibular lateral incisor and canine were not in their normal anatomic positions, there were no functional or esthetic problems.
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http://dx.doi.org/10.1002/ca.20136 | DOI Listing |
Orthod Craniofac Res
January 2025
Department of Health Sciences, School of Dentistry, Magna Graecia University of Catanzaro, Catanzaro, Italy.
Objective: This retrospective study aimed to evaluate morphometric changes in mandibular condyles of patients with skeletal Class III malocclusion following two-jaw orthognathic surgery planned using virtual surgical planning (VSP) and analysed with automated three-dimensional (3D) image analysis based on deep-learning techniques.
Materials And Methods: Pre-operative (T1) and 12-18 months post-operative (T2) Cone-Beam Computed Tomography (CBCT) scans of 17 patients (mean age: 24.8 ± 3.
J Craniofac Surg
January 2025
Department of Radiology, Faculty of Medicine, Çukurova University, Adana, Turkey.
Aim: In this study, it was aimed to determine the changes in the anatomic structures of individuals with obstructive sleep apnea syndrome (OSAS) classified according to the apnea-hypopnea index (AHI).
Materials And Methods: Individuals were divided into groups as group 1 (AHI=0, n=20), group 2 (AHI ˂5, n=20), group 3 (AHI=5-15, n=20), group 4 (AHI=16-30, n=20), group 5 (AHI ˃30, n=20). The individuals left lateral cervical vertebra radiographs were taken.
Turk J Orthod
December 2024
Karadeniz Technical University Faculty of Dentistry, Department of Orthodontics, Trabzon, Turkey.
Objective: This study aimed to evaluate the skeletal, dental, and soft tissue effects of the nickel titanium memory Leaf Expander in a growing sample of patients with unilateral posterior crossbite compared with a control group using digital models and lateral cephalometric radiographs.
Methods: The research included a total of 24 patients, 12 of whom were treated and 12 untreated. The Leaf Expander group consisted of 4 males and 8 females (mean age= 8.
Am J Orthod Dentofacial Orthop
December 2024
Department of Orthodontics, Teerthanker Mahavir Dental College and Research Centre, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh, India.
Introduction: The primary objective of this study was to assess the 3-dimensional position of the mandibular canal (MC) in different craniofacial patterns to know about the safe placement of temporary skeletal anchorage devices using cone-beam computed tomography (CBCT). The secondary objectives were to assess sex differences and correlate the MC position with various factors.
Methods: This prospective, observational study was conducted on 90 patients, divided into 3 groups based on the sagittal pattern: skeletal Class I, Class II, and Class III.
J Funct Biomater
December 2024
Biotechnology Research Institute, Samara State Medical University, 443079 Samara, Russia.
Mandibular bone defect reconstruction remains a significant challenge for surgeons worldwide. Among multiple biodegradable biopolymers, allogeneic bone scaffolds derived from human sources have been used as an alternative to autologous bone grafts, providing optimal conditions for cell recruitment, adhesion, and proliferation and demonstrating significant osteogenic properties. This study aims to investigate the bone microstructure of the human scapula as a source for allogeneic bone scaffold fabrication for mandibular tissue engineering purposes.
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