Dual bite demonstrated by kinesiography: a case report.
A 60-year-old man sought treatment for extensive tooth wear resulting from bruxism. He had no signs of temporomandibular joint dysfunction. The kinesiographic study revealed that he had a dual bite, with two intercuspal positions, separated by 3 mm anteroposteriorly and by 7 mm laterally. The dentition was restored with metal-ceramic crowns to restore a normal occlusion. The kinesiographic follow-up studies revealed that, initially, it was difficult for the patient to adapt to a new occlusal design, but 6 years later, the dual bite had disappeared. However, the disoccluding angle had flattened where the second intercuspal position had previously existed, corresponding, clinically, to a change from canine guidance to anterior-canine guidance.
Salsench
J
J
Department of Occlusion and Prosthodontics, University of Barcelona, Spain.
Peraire
M
M
Torrent
J
J
D002012:Bruxism / Q000150:complications; D003769:Dental Occlusion, Traumatic / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D006801:Humans; D007574:Jaw Relation Record / Q000295:instrumentation*; D008297:Male; D008334:Mandible / Q000503:physiopathology; D008409:Mastication / Q000502:physiology*; D008875:Middle Aged; D009068:Movement; D014072:Tooth Abrasion / Q000150:complications* / Q000209:etiology / Q000628:therapy