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A case of anterior open bite developing during adolescence
1Departments of Orthodontics and Oral and Maxillofacial Radiology, Niigata University Faculty of Dentistry, 2-5274 Gakkocho-dori, Niigata 951-8514, Japan. kazuhiro@dent.niigata-u.ac.jp
Journal of Orthodontics
|March 20, 2001
Summary
This case report details an adolescent with temporomandibular joint osteoarthrosis (OA) who developed a progressive open bite. TMJ OA can impact mandibular growth, potentially leading to facial deformities.
Area of Science:
- Dentistry
- Orthodontics
- Radiology
Background:
- Temporomandibular joint (TMJ) degeneration is linked to facial deformities, particularly mandibular retrusion.
- Longitudinal studies on TMJ osteoarthrosis (OA) and its effects are scarce.
- Understanding TMJ OA's impact on adolescent skeletal development is crucial.
Observation:
- An adolescent patient presented with progressive open bite and diagnosed TMJ OA.
- Cephalometric analysis revealed mandibular rotation and upper incisor inclination.
- MRI confirmed internal derangement and condylar erosion in both TMJs.
Findings:
- TMJ OA can manifest as progressive open bite in adolescents.
- Mandibular growth alterations, including downward and backward rotation, are associated with TMJ OA.
- Internal derangement and condylar erosion are key MRI findings in affected TMJs.
Implications:
- This case highlights the potential for TMJ OA to cause significant occlusal changes.
- Early diagnosis and management of TMJ OA may prevent severe skeletal deformities.
- Further research into the etiology of open bite in TMJ OA cases is warranted.
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