Question

Which of the following is correct regarding TMJ articular disc disorder etiology?

-Macrotrauma includes whiplash injury
-Microtrauma may be associated with dental procedures
-Indirect injury may be attributed to prolonged forces on the TMJ complex
-Microtrauma may be associated with parafunction

Answer 1

The etiology of TMJ articular disc disorder can be attributed to macrotrauma, microtrauma associated with dental procedures, indirect injury attributed to prolonged forces on the TMJ complex, and microtrauma associated with parafunction.

Step-by-step explanation:

The etiology of TMJ articular disc disorder can be attributed to several factors:

1. Macrotrauma includes whiplash injury: This type of trauma can cause dislocation of the TMJ and result in the mandibular condyle moving beyond the articular tubercle, leading to inability to close the mouth.
2. Microtrauma may be associated with dental procedures: Repetitive stresses on the TMJ during dental procedures like tooth extraction or root canal treatment can contribute to TMJ articular disc disorder.
3. Indirect injury may be attributed to prolonged forces on the TMJ complex: Prolonged forces on the TMJ, such as clenching or grinding of teeth, can cause damage to the articular disc and lead to TMJ disorder.
4. Microtrauma may be associated with parafunction: Parafunction refers to abnormal functioning of the TMJ, such as clenching or grinding of teeth, which can result in microtrauma and contribute to the development of TMJ disorder.