Etiology and Diagnosis for Idiopathic Condylar Resorption in Growing Adolescents.

The factors of the development of ICR are also unknown, and ICR patients are likely to visit dentists and orthopedic surgeons after an anterior open bite emerges due to a reduction in mandibular ramus height and mandibular retraction caused by progressive condylar resorption. Although the relationship between ICR and orthodontic treatment is still unknown, it should not be ignored that many patients with ICR have undergone orthodontic treatment, even though the occurrence of ICR is extremely rare [[3]]. All 12 patients exhibited maxillary protrusion with a retrognathic chin and an anterior open bite; however, 2 of the 12 ICR patients presented skeletal Class III malocclusion (anterior crossbite) before the onset of ICR. Etiology of ICR The local factors of ICR include TMJ osteoarthritis, ischemic necrosis, infection, and trauma to the head, neck, and jaws [[3], [5]]. [Extracted from the article]