Abstract
In the case of lacking the posterior occlusal support, decrease of peripheral neural input from periodontal ligament and occlusal vertical dimension due to loss of teeth cause shift of mandibular position( deviation of temporomandibular joint and increase of muscle tonus) and disharmony among masticatory muscles, perioral muscles and tongue most likely induces dysfunction of stomatognathic system.
Therefore, treatment should focus on setting of mandibular position and mandibular lateral movement path.
In order to restructure functional occlusion system on the patient with symptom mentioned above, the mouth volume was restored by placing a treatment denture in the upper and lower jaws, mandibular position was stabilized, and lateral movement was provided centering on canine teeth of both sides in addition to rehabilitation. As consequence of the treatment, disturbance of mastication and sleep which were the patient's chief complaint have improved, then the partial metal base denture was placed in the upper and lower jaws after six months.
