This case report presents a treatment for a patient with idiopathic condylar resorption, characterized by mandibular condyle resorption, skeletal Class II malocclusion, and an open bite. The patient underwent total temporomandibular joint (TMJ) replacement to improve TMJ function and enhance facial aesthetics, as well as to extrude the lower posterior teeth to maintain the increased vertical dimension of occlusion. These procedures successfully replaced the mandibular condyle and fossa with TMJ prosthetics, stabilizing jaw function and allowing for improved occlusion. This report discusses the considerations and stability associated with TMJ replacement in a patient with idiopathic condylar resorption.