ICR full form in medical term is Idiopathic condylar resorption, which also refers to condylar resorption. The most common condition causes bones in the jaw joint to break down. In ICR condition, the patient’s lower jaw feels as if it is retracting or contracting. Therefore, many doctors do surgery to fix reclined jaw or eliminate this problem.
In simple words, ICR is breaking a bone in the jaw joint or part of the temporomandibular joint. This bone loss adversely affects the mandibular condyles, the rounded ends of the lower jaw that attach to the TMJ on both sides of the skull. In addition, it may cause your lower jawbone and mandible to retract and shrink.
Idiopathic Condylar Resorption may cause due to arthritis, systemic lupus and scleroderma erythematosus, rheumatoid disease, hormonal changes, infection in the jaw joint, osteoarthritis, jaw surgery, trauma, and reactive arthritis. People having ICR may notice alterations in their facial appearance and structure. The significant notable difference is a retracting or shrinking of their chin and jaw. Some may also have an open bite, overbite, crooked teeth, jaw pain, popping or clicking, headaches, and fatigue.