'Inverse' temporomandibular joint dislocation

Area of Science:

• Oral and Maxillofacial Surgery
• Radiology
• Orthodontics

Background:

• Temporomandibular joint (TMJ) dislocations are typically classified by the direction of condylar displacement.
• Anterior dislocations are the most common type, while posterior, lateral, and superior dislocations are rare.
• Inverse TMJ dislocation, a specific bilateral anterior and superior displacement with mandibular impaction over the maxilla, is exceptionally rare.

Observation:

• The case presented unique clinical signs and radiographic findings characteristic of inverse TMJ dislocation.
• This condition involves a complex displacement pattern of the mandibular condyle.
• Radiographic imaging was crucial in identifying the specific impaction and displacement of the mandible relative to the maxilla.

Findings:

• The study describes the distinct clinical presentation of inverse TMJ dislocation.
• Unique radiographic features, including the specific impaction of the mandible over the maxilla, were documented.
• This case adds to the minimal existing literature on inverse TMJ dislocation, providing valuable diagnostic information.

Implications:

• Understanding the unique features of inverse TMJ dislocation can improve diagnosis and treatment planning.
• This case report contributes to the specialized knowledge base for rare TMJ pathologies.
• Further research into the etiology and management of inverse TMJ dislocation is warranted.