Influence of balanced occlusion and canine guidance on electromyographic activity of elevator muscles in complete denture wearers. 1989

R Miralles, and R Bull, and A Manns, and E Roman
Department of Physiology and Biophysics, Faculty of Medicine, University of Chile, Santiago.

Electromyographic recordings were made from the anterior temporal and masseter muscles during maximal voluntary clenching with complete dentures in the intercuspal position and in the laterotrusive jaw position with balanced occlusion and canine guidance. The different pattern of activity of the two muscles in the laterotrusive occlusal schemes studied suggests that their motoneuron pools receive different inputs. The lower activity in both muscles with canine guidance suggests that canine guidance may be a significant factor for preventing parafunctional activity in edentulous patients.

UI MeSH Term Description Entries
D008297 Male Males
D008406 Masseter Muscle A masticatory muscle whose action is closing the jaws. Masseter Muscles,Muscle, Masseter,Muscles, Masseter
D008410 Masticatory Muscles Muscles arising in the zygomatic arch that close the jaw. Their nerve supply is masseteric from the mandibular division of the trigeminal nerve. (From Stedman, 25th ed) Masticatory Muscle,Muscle, Masticatory,Muscles, Masticatory
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009119 Muscle Contraction A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments. Inotropism,Muscular Contraction,Contraction, Muscle,Contraction, Muscular,Contractions, Muscle,Contractions, Muscular,Inotropisms,Muscle Contractions,Muscular Contractions
D003481 Cuspid The third tooth to the left and to the right of the midline of either jaw, situated between the second INCISOR and the premolar teeth (BICUSPID). (Jablonski, Dictionary of Dentistry, 1992, p817) Canine Tooth,Canine Teeth,Cuspids,Teeth, Canine,Tooth, Canine
D003766 Dental Occlusion The relationship of all the components of the masticatory system in normal function. It has special reference to the position and contact of the maxillary and mandibular teeth for the highest efficiency during the excursive movements of the jaw that are essential for mastication. (From Jablonski, Dictionary of Dentistry, 1992, p556, p472) Canine Guidance,Occlusal Guidance,Occlusal Plane,Occlusion, Dental,Dental Occlusions,Guidance, Canine,Guidance, Occlusal,Occlusal Guidances,Occlusal Planes,Occlusions, Dental,Plane, Occlusal,Planes, Occlusal
D003767 Dental Occlusion, Balanced Dental occlusion in which the occlusal contact of the teeth on the working side of the jaw is accompanied by the harmonious contact of the teeth on the opposite (balancing) side. (From Jablonski, Dictionary of Dentistry, 1992, p556) Balanced Dental Occlusion,Occlusion, Balanced Dental,Balanced Dental Occlusions,Dental Occlusions, Balanced,Occlusions, Balanced Dental
D003824 Denture, Complete A denture replacing all natural teeth and associated structures in both the maxilla and mandible. Complete Denture,Complete Dentures,Dentures, Complete
D004576 Electromyography Recording of the changes in electric potential of muscle by means of surface or needle electrodes. Electromyogram,Surface Electromyography,Electromyograms,Electromyographies,Electromyographies, Surface,Electromyography, Surface,Surface Electromyographies

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