• It is the most common benign tumor of the TMJ.
  • Most common in th 2nd-3rd decade of life.
  • It is an exophytic bone mass emanating from the cortex, which may cause limited mouth opening and jaw deviation to the controlaterla side.
  • Patients with osteochondroma develop often facial asymmetry and malocclusion.
  • Radiographic features: radiopaque mass usually extending from the anteriomedal aspect of the condylar head along the tendon of the lateral pterygoid.