Publication: Influencia del contacto mediotrusivo natural en la actividad electromiográfica mandibular y cervical en personas sanas y con trastornos temporomandibulares durante la masticación y el rechinamiento dentario
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2018-01-09
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Universidad Complutense de Madrid
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Abstract
El efecto de un contacto oclusal mediotrusivo sobre la actividad muscular ha sido un tema de debate por décadas y su importancia clínica es aún dudosa. La oclusión dentaria ha sido estudiada desde distintas perspectivas, estableciéndose ya en los últimos años del siglo XIX los principios que corresponden a una oclusión normal y una maloclusión (Angle, 1899). Sin embargo la complejidad para el poder establecer la contribución de cada alteración oclusal en particular es difícil, debido a su estrecha relación con otras estructuras del sistema estomatognático (como el sistema neuromuscular y las articulaciones temporomandibulares) y la variabilidad intrínseca de los sujetos, manifestándose por ejemplo en la capacidad de adaptación, entre otras causas. Esto se hace aun más complejo al intentar relacionar estas alteraciones de la oclusión con la presencia de trastornos temporomandibulares, dado que estos últimos presentan una etiología multifactorial, donde una serie de factores de riesgo interactúan a nivel individual, determinando la aparición de los síntomas y signos clínicos (Greene, 2001). Con la finalidad de obtener información relevante que permita dilucidar en parte el fenómeno, la herramienta utilizada fue la electromiografía de superficie ya que es la técnica más objetiva y confiable para la evaluación de la función y eficiencia muscular, a través de la detección de los potenciales eléctricos, siendo posible evaluar el grado de actividad muscular durante función y parafunción (Woźniak y cols., 2013)...
The effect of a mediotrusive occlusal contact on muscular activity has been a topic of debate for decades and its clinical relevance is still unclear. Dental occlusion has been studied from different perspectives, and in the later years of nineteenth century the principles of normal occlusion and malocclusion were established (Angle, 1899). However, the complexity to find the particular contribution of each occlusal disturbance is difficult, due to a close relationship with other structures of the stomatognathic system (as neuromuscular system and temporomandibular joints) and the intrinsic subject’s variability, demonstrating, for example in their adaptability capacity, among others. This is more complex when trying to link the occlusal disturbances and the presence of temporomandibular disorders (TMD), because the latter have a multifactorial etiology, providing that a number of risk factors interact at the individual level and determine the onset of clinical signs and symptoms (Greene, 2001). In order to obtain relevant information that help to explain in part this phenomena, the electromyography (EMG) was the tool chosen because is the most objective and reliable technique for evaluating muscle function and efficiency by detecting their electrical potentials. It makes it possible to assess the extent of muscle activity during function and parafunction (Woźniak et al., 2013)...
The effect of a mediotrusive occlusal contact on muscular activity has been a topic of debate for decades and its clinical relevance is still unclear. Dental occlusion has been studied from different perspectives, and in the later years of nineteenth century the principles of normal occlusion and malocclusion were established (Angle, 1899). However, the complexity to find the particular contribution of each occlusal disturbance is difficult, due to a close relationship with other structures of the stomatognathic system (as neuromuscular system and temporomandibular joints) and the intrinsic subject’s variability, demonstrating, for example in their adaptability capacity, among others. This is more complex when trying to link the occlusal disturbances and the presence of temporomandibular disorders (TMD), because the latter have a multifactorial etiology, providing that a number of risk factors interact at the individual level and determine the onset of clinical signs and symptoms (Greene, 2001). In order to obtain relevant information that help to explain in part this phenomena, the electromyography (EMG) was the tool chosen because is the most objective and reliable technique for evaluating muscle function and efficiency by detecting their electrical potentials. It makes it possible to assess the extent of muscle activity during function and parafunction (Woźniak et al., 2013)...
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Tesis inédita de la Universidad Complutense de Madrid de la Facultad de Odontología. Departamento de Estomatología IV, leída el 24 de Junio de 2016