ORIGINAL RESEARCH article
Front. Oral. Health
Sec. Oral and Maxillofacial Surgery
Volume 6 - 2025 | doi: 10.3389/froh.2025.1572305
Positional and dimensional osseous characteristics of the temporomandibular joint in female patients with skeletal Class III malocclusion and disc displacement, with and without reduction
Provisionally accepted
- 1Qatar University, Doha, Qatar
- 2Faculty of Dentistry, Cairo University, Giza, Beni Suef, Egypt
- 3Faculty of Dentistry, Jazan University, Jazan, Saudi Arabia
- 4Faculty of Pharmacy, MSA University, Giza, Beni Suef, Egypt
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Introduction: This study aimed to compare the dimensional and positional osseous features of the temporomandibular joint (TMJ) in patients with skeletal Class III malocclusion, female patients without temporomandibular disorders (TMDs), and those with TMDs presenting as disc displacement with/without reduction (DDR/DDWR). Methods: Adult patients with skeletal Class III malocclusion and average vertical (Mandibular plane inclination=37±5º) were categorized into the TMD group comprising patients with DDR/DDWR and the non-TMD group. Three-dimensional standardized TMJ analysis was performed using cone-beam computed tomography, which included assessments of the mandibular fossa (MF), mandibular condyle, TMJ spaces, and vertical and anteroposterior intrajoint condylar positions.The MF location in the DDR/DDWR group was significantly more superior (p<0.0001) and anterior (p=0.012) relative to the respective planes. The MF width was significantly lesser (p=0.001) with a steeper (p<0.0001) anterior wall inclination in the DDR/DDWR group than in the non-TMD. The mandibular condyles were located significantly more laterally (p=0.016), at a greater distance from the midsagittal plane, in the DDR/DDWR group than in the non-TMD. The anterior and medial joint spaces were significantly larger (p<0.0001) and the intra-joint condylar positions were more posterior and superior (p<0.0001) in the DDR/DDWR group than in the non-TMD.The positional and dimensional osseous characteristics of the TMJ differed significantly between patients with skeletal Class III malocclusion without TMDs and those with DDR or DDWR.
Keywords: Disc displacement, Temporomandibular joints, Cone-Beam Computed Tomography, Mandibular Condyle, joint spaces
Received: 07 Feb 2025; Accepted: 21 Apr 2025.
Copyright: © 2025 Almashraqi, Aboalnaga, Alhammadi and Salah Fayed. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Abeer A. Almashraqi, Qatar University, Doha, Qatar
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