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Updated: Oct 5, 2025
Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
Published on: February 23, 2024
Three-dimensional assessment of temporomandibular joint in skeletal Class I malocclusion with variable degrees of
Enas Senan Alyafrusee1,2, Maged Sultan Alhammadi3, Bushra Sufyan Almaqrami2,4
1Orthodontic Department, School of Stomatology, Lanzhou University, Lanzhou, China.
Objective:
To three-dimensionally evaluate the position and morphology of the TMJ in skeletal Class I with variable degrees of overbite and overjet in comparison with normal peers.
Methods:
Pretreatment CBCT scans of 126 adults were retrieved. Based on the severity of overjet and overbite, the sample was divided into three main groups and six subgroups (18 patients each): the first group with a normal overbite and variable overjet degree and the second group with normal overjet and variable overbite degree. These six subgroups were compared with a third control group of normal overjet and overbite.
Results:
There were significant differences in vertical condylar position, vertical and anteroposterior condylar inclinations, condylar height, and significant posterior condylar positioning in severe deep overbite, compared with the control group.
Conclusion:
There were significant changes in the TMJ components in severe deep overbite cases. Therefore, sever deep overbite could be considered a predisposing factor for temporomandibular disorders.
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