title: The origin and development of malocclusions. When, where and how dental malocclusions develop.
abstract: This article describes the forces of the muscles from the stomatonathic system and how they interact in many children to change the normal forces of growth. Because of this change in muscle forces there is a change from normal teeth and bone growth positions to abnormal positions. These normal and/or abnormal changes in muscle forces are the basis for development into class one, class two and class three occlusions. This is very valuable information for the orthodontic clinician because these muscle forces are the fundamental basis for all orthodontic treatment. By knowing this an orthodontic clinician will be more able to diagnose and treat a malocclusion. This is exceptionally important for the dentist who is just starting to learn diagnosis, treatment planning, functional and fixed orthodontic treatment.
authors.forename: Merle E
authors.initials: ME
authors.lastname: Loudon
mesh_terms: D001696:Biomechanical Phenomena; D002648:Child; D003679:Deglutition / Q000502:physiology; D005152:Facial Muscles / Q000502:physiology; D006801:Humans; D008310:Malocclusion / Q000175:diagnosis / Q000209:etiology*; D008311:Malocclusion, Angle Class I / Q000503:physiopathology; D008312:Malocclusion, Angle Class II / Q000503:physiopathology; D008313:Malocclusion, Angle Class III / Q000503:physiopathology; D008334:Mandible / Q000254:growth & development; D008410:Masticatory Muscles / Q000502:physiology; D008437:Maxilla / Q000254:growth & development; D008445:Maxillofacial Development / Q000502:physiology; D009058:Mouth Breathing / Q000503:physiopathology; D009334:Neck Muscles / Q000502:physiology; D010347:Patient Care Planning; D014059:Tongue / Q000502:physiology; D014061:Tongue Habits; D014078:Tooth Eruption / Q000502:physiology; D014094:Tooth, Deciduous / Q000473:pathology