PDF: Condylar Hyperactivity - diagnosis and treatment - case reports

Skeletal asymmetries of the mandible caused by condylar hyperactivity can pose serious functional, esthetic and psychosocial problems for patients.

Although their etiology is still unknown, some authors believe they can be caused by trauma, inflammation, hypervascularity, genetic factors and hormonal disorder.

Several classifications are available. Some are etiology-related while others divide these anomalies according to the growth factors involved in its development. 

Asymmetries can therefore be acquired or developmental, and since each situation presents with different features a differential diagnosis can be more easily established.

Acquired asymmetries involve pain, symptom changes, alterations in facial appearance and function with time. The volume of facial muscles remains unchanged.

Other features include TMJ crepitation (crackling/popping sounds), limited mandibular movements (rotation, protrusion and mouth opening), severe crossbite and irregular condyle anatomy.

The purpose of this article is to present two cases of facial asymmetry caused by condylar hyperactivity, showing the importance of an accurate diagnosis and the means used to achieve it while seeking an appropriate treatment for each case.