IADR Abstract Archives
A Preventive Dentistry Method for Tempromandibular Joint Disorder(Type 1 and 2)
Objectives: A recnt study claasified tempromandibular joint disorder(TMJD) into four patterns in dentistry in Japan. In this study, slight condition treatment was attemped to clarify its utility as primary TMJD treatment in preventive dentistry.
Methods: Two TMJD patterns (type 1 and 2) show pain and slight function or movement problem. A total 600 patients were questioned about systemic disease and dental history, and underwent X-ray imaging, oral examination, and oral cavity snap impression. All data were then analyzed using the Myodontics theory. Mouth-pieces were designed and made using acrylic resin, then set in the oral cavity.
Results: No patients showed any systemic or dental disease. On study models, several varying tooth positions were seen from base HIP points and plane.Furthermore, on these models, left- and right-side occlusal balance and vertical occlusion dimensions changed and showed various patterns. On panoramic X-ray, no particular relationship was seen between bone and tooth conditions. Almost patients (96%) showed functional recovery as TMJ area pain and closed mouth condition resolved within a few weeks. Other clinical conditions (clicking sounds and crepitus) showed a recovery rate of 30%.
Conclusions: 1. Occlusal balance was analyzed using the Myodontics theory.
2. Mouth-pieces made according to this theory achieved recovery of clinical condition, however, clicking sounds and crepitus showed a low recovery rate.
3. Myodontics theory appears useful in preventive care dentistry followed by operative and prosthodontic dental treatment.
Methods: Two TMJD patterns (type 1 and 2) show pain and slight function or movement problem. A total 600 patients were questioned about systemic disease and dental history, and underwent X-ray imaging, oral examination, and oral cavity snap impression. All data were then analyzed using the Myodontics theory. Mouth-pieces were designed and made using acrylic resin, then set in the oral cavity.
Results: No patients showed any systemic or dental disease. On study models, several varying tooth positions were seen from base HIP points and plane.Furthermore, on these models, left- and right-side occlusal balance and vertical occlusion dimensions changed and showed various patterns. On panoramic X-ray, no particular relationship was seen between bone and tooth conditions. Almost patients (96%) showed functional recovery as TMJ area pain and closed mouth condition resolved within a few weeks. Other clinical conditions (clicking sounds and crepitus) showed a recovery rate of 30%.
Conclusions: 1. Occlusal balance was analyzed using the Myodontics theory.
2. Mouth-pieces made according to this theory achieved recovery of clinical condition, however, clicking sounds and crepitus showed a low recovery rate.
3. Myodontics theory appears useful in preventive care dentistry followed by operative and prosthodontic dental treatment.