title: [Anomalies of the inclination of the occlusal plane: early treatment using indirect guide-planes--electromyographic response].
abstract: We discuss five cases of ANGLE's malocclusion Classes I, II or III that were rehabilitated basically by: restoration of masticatory function (previously pathological); the use of removable orthopaedic plates with indirect guideplanes. The patients (aged 6-15 years when treatment began) now have symmetrical balanced occlusion. Surface electromyography was used to study the function of the anterior temporal, surface masseter, deep masseter and anterior digastric muscles of 12 patients during rehabilitation of severe malocclusion. Electromyograms were obtained both with and without orthopaedic guideplanes installed. There were no significant differences as regards mean resting myoelectric activity. During maximum voluntary clenching in centric occlusion, the anterior temporal muscles were the most active, followed by the surface masseters. The activity of the anterior temporal muscles during clenching was significantly less (P < 0.01) with guideplanes than without. During lateral displacements, the non-working side anterior temporal muscle exhibited a significantly higher potential than the other muscles monitored, especially with guideplanes installed. The activity was lees with guideplanes during swallowing.
authors.forename: U A
authors.initials: UA
authors.lastname: Santana Penin
authors.forename: M J
authors.initials: MJ
authors.lastname: Mora Bermúdez
authors.forename: J M
authors.initials: JM
authors.lastname: Fraga Bermúdez
authors.forename: J L
authors.initials: JL
authors.lastname: Raymond
mesh_terms: D000293:Adolescent; D016302:Centric Relation; D002648:Child; D002675:Child, Preschool; D003679:Deglutition / Q000502:physiology; D003767:Dental Occlusion, Balanced; D004576:Electromyography / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000503:physiopathology / Q000628:therapy*; D008311:Malocclusion, Angle Class I / Q000628:therapy; D008312:Malocclusion, Angle Class II / Q000628:therapy; D008313:Malocclusion, Angle Class III / Q000628:therapy; D008410:Masticatory Muscles / Q000503:physiopathology*; D009119:Muscle Contraction / Q000502:physiology; D017090:Occlusal Splints; D009967:Orthodontic Appliances; D009972:Orthodontics, Interceptive
vernacular_title: Anomalies d'inclinaison du plan occlusal: traitement précoce par les pistes indirectes--réponse électromyographique.