Abstract
This study evaluated the correlation between temporomandibular joint (TMJ) internalderangement and the intercuspal position (ICP) to retrusive contact position (RCP) discrepancy.Seventy-one individuals (13 male, 58 female) were assessed via MRI and grouped as: normal TMJ,TMJ disk displacement, or mandibular condylar changes. The ICP-RCP discrepancy significantlyincreased with the severity of TMJ pathology: 0.09 mm (normal), 0.96 mm (disk displacement),and 1.80 mm (condylar changes). While unilateral TMJ alterations were associated with anincreased discrepancy, no significant difference was observed between unilateral and bilateralinvolvement. Joint effusion did not significantly affect the discrepancy. These findings suggestthat TMJ internal derangement contributes to a progressively larger ICP-RCP discrepancy as thecondition worsens.
