52 Jaw conditions: Temporomandibular pain-dysfunction

52 Jaw conditions: Temporomandibular pain-dysfunction

Figure 52.1a TMJ anatomy.

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Figure 52.1b Temporomandibular joint.

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Figure 52.2 Causes of TMJ dysfunction.

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Table 52.1 Main causes of restricted jaw opening.

Extra-articular Intra-articular
Condylar neck fracture Ankylosis
Coronoid hypertrophy Condylar intracapsular fracture
Fibrosis (scar, scleroderma, submucous fibrosis) Joint arthritis, dislocation or subluxation
Hysteria  
Masticatory muscle infection, hematoma or inflammation  
Neoplasm  
Temporomandibular joint dysfunction  
Tetanus  
Tetany  

Table 52.2 Investigations used in temporomandibular joint disease.

Procedure Advantages Disadvantages
Arthrography (double contrast) Provides excellent information Danger of infection Painful
Arthroscopy Good visualization
Minimally invasive
Requires anesthesia
Technically demanding
Magnetic resonance imaging (MRI) Excellent information without exposure to ionising radiation Non-invasive Expensive
Not universally available
Radiography Simple, can reveal much pathology
DPT demonstrates both TMJs
CT, especially cone beam, can provide excellent information

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Jan 12, 2015 | Posted by in Oral and Maxillofacial Pathology | Comments Off on 52 Jaw conditions: Temporomandibular pain-dysfunction
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