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Abstract(s)
INTRODUÇÃO: Um dos principais nervos envolvidos no controlo neurológico do sistema estomatognático é o nervo trigémio, ou V par craniano. Existem relações anatómicas que sugerem a influência de porções do sistema trigémio na coordenação da postura e visão. As informações sensoriais dos receptores proprioceptivos do sistema estomatognático podem ser processadas com informações do sistema vestibular e oculomotor; por conseguinte, alterações que ocorram na estimulação do trigémio podem influenciar e eventualmente levar a desequilíbrios tanto nos sistemas vestibular como oculomotor. A existência de cadeias de músculos posturais também pode explicar que desordens na função dos músculos da mastigação e deglutição possam ser transmitidas à musculatura distal pela sua relação com os músculos da região cervical. Estes músculos posturais funcionam como uma unidade e são interdependentes entre si. Alterações na propriocepção e nos aferentes do trigémio, como as que ocorrem a nível do ligamento periodontal aquando da perda de dentes, parecem provocar um desequilíbrio nas cadeias de músculos posturais e consequentemente a alterações posturais.
OBJECTIVOS: Contribuir para a sistematização da informação existente de modo a ajudar a fomentar a discussão científica em torno deste tema.
METODOLOGIA: Foi conduzida uma pesquisa bibliográfica com recurso ao motor de busca PubMed, para as publicações relacionadas com as palavras-chave: “oclusão dentária”, “postura”, “nervo trigémio”, “propriocepção”, “sistema estomatognático”, “equilíbrio postural”. Os critérios de inclusão foram artigos publicados entre 2000 e 2015 de modo a se conseguir uma quantidade de informação significativa mas que ao mesmo tempo fosse actualizada e apresentasse rigor científico, incluíram-se artigos anteriores a esta data pela sua relevância.
CONCLUSÃO: Continuam a acumular-se evidências de que alterações neuroanatómicas e musculosqueléticas resultantes da perda dentária acarretam riscos de desenvolvimento de desordens posturais. Estudos recentes encarecem o papel potencial da oclusão dentária e estímulos aferentes do trigémio em manter o controlo da postura.
INTRODUCTION: One of the main nerves involved in the neurological control of the stomatognathic system is the trigeminal nerve, or cranial nerve V. There are anatomical relationships that suggest the influence of portions of the trigeminal system in the coordination of posture and sight. Therefore, the sensory information from the proprioceptive receptors of the stomatognathic system can be processed with information from the vestibular and oculomotor systems; consequently the changes occurring in the stimulation of the trigeminal nerve can influence and eventually lead to imbalances in both vestibular and oculomotor systems. The existence of postural muscles chains also can explain that disorders in the function of the masticatory muscles and swallowing can be transmitted to the distal muscles by its close relationship with the muscles of the neck. These postural muscles work as a unit and are interdependent. Changes in proprioception and the trigeminal afferents, such as those occurring on the periodontal ligament after tooth loss, seem to lead to an imbalance in the postural muscles chains and consequently lead to postural changes. OBJECTIVES: Contribute to the systematization of the existing information in order to encourage the scientific discussion around this topic. METHODS: A literature search was conducted using the search engine PubMed for publications related to the keywords: "occlusion", "posture", "trigeminal nerve", "proprioception", "stomatognathic system", "balance". Inclusion criteria were articles published between 2000 and 2015 in order to achieve a significant amount of information but at the same time updated and with scientific accuracy, articles previously published were included due to their significance. CONCLUSION: Evidences continue to accumulate that neuroanatomical and musculoskeletal changes resulting from tooth loss carry risks of development of postural disorders. Recent studies show the potential role of dental occlusion and trigeminal afferent stimuli to maintain postural control.
INTRODUCTION: One of the main nerves involved in the neurological control of the stomatognathic system is the trigeminal nerve, or cranial nerve V. There are anatomical relationships that suggest the influence of portions of the trigeminal system in the coordination of posture and sight. Therefore, the sensory information from the proprioceptive receptors of the stomatognathic system can be processed with information from the vestibular and oculomotor systems; consequently the changes occurring in the stimulation of the trigeminal nerve can influence and eventually lead to imbalances in both vestibular and oculomotor systems. The existence of postural muscles chains also can explain that disorders in the function of the masticatory muscles and swallowing can be transmitted to the distal muscles by its close relationship with the muscles of the neck. These postural muscles work as a unit and are interdependent. Changes in proprioception and the trigeminal afferents, such as those occurring on the periodontal ligament after tooth loss, seem to lead to an imbalance in the postural muscles chains and consequently lead to postural changes. OBJECTIVES: Contribute to the systematization of the existing information in order to encourage the scientific discussion around this topic. METHODS: A literature search was conducted using the search engine PubMed for publications related to the keywords: "occlusion", "posture", "trigeminal nerve", "proprioception", "stomatognathic system", "balance". Inclusion criteria were articles published between 2000 and 2015 in order to achieve a significant amount of information but at the same time updated and with scientific accuracy, articles previously published were included due to their significance. CONCLUSION: Evidences continue to accumulate that neuroanatomical and musculoskeletal changes resulting from tooth loss carry risks of development of postural disorders. Recent studies show the potential role of dental occlusion and trigeminal afferent stimuli to maintain postural control.
Description
Keywords
Oclusão Postura Sistema trigémio Propriocepção Sistema estomatognático Cadeias de músculos posturais Occlusion Posture Trigeminal system Proprioception Stomatognathic system Postural muscle chains