Download - Articulacion temporo mandibular
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ARTICULACION TEMPORO-
MANDIBULAR
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• La articulación temporomandibular (también llamada complejo articular craneomandibular) es la articulación que existe entre el hueso temporal y la mandíbula.• La articulación temporomandibular está compuesta por un conjunto de estructuras anatómicas que, con la ayuda de grupos musculares específicos, permite a la mandíbula ejecutar variados movimientos aplicados a la función masticatoria (apertura y cierre, protrusión, retrusión, lateralidad).• Tiene dos movimientos: de rotación y traslación.
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• Se encuentra por adelante del conducto auditivo y de la • Arteria temporal superficial
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Retiramos parte del arco cigomático con la aponeurosis temporal.
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• De forma elíptica con diámetro transverso mayor que el anteroposterior, dónde el borde posterior y anterior es más grueso que la zona media.• Estructura a-vascular y sin nervios, diseñada para soportar la presión de la masticación
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• El disco articular y la cápsula articular dividen en dos a la articulación, en una región supra-discal o artrodialde la ATM.
• Inferior o infra-discal, dónde se van a producir los movimientos de rotación y translación de la articulación.
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Todo lo que está por detrás del menisco o disco le vamos a llamar retrodiscal.
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• El disco o cartílago articular va a tener varios puntos de fijación.• Uno de ellos es ligamento retro-discal inferior que se inserta en la parte posterior del cóndilo del maxilar inferior.
• Ligamento retro-discal superior que se fija a la región superior de la cavidad glenoidea del temporal.
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Formas básicas de movimiento
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• Se encuentra por adelante del conducto auditivo externo
• Arteria temporal superficial
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Retiramos parte del arco cigomático con la aponeurosis temporal.
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Disco articular• De forma elíptica con diámetro transverso mayor que el anteroposterior, dónde el borde posterior y anterior es más grueso que la zona media.• Estructura a-vascular y sin nervios, diseñada para soportar la presión de la masticación
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• El disco articular y la cápsula articular dividen en dos a la articulación, en una región supra-discal o artrodialde la ATM.
• Inferior o infra-discal, dónde se van a producir los movimientos de rotación y translación de la articulación.
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• El disco o cartílago articular va a tener varios puntos de fijación.• Uno de ellos es ligamento retro-discal inferior que se inserta en la parte posterior del cóndilo del maxilar inferior.
• Ligamento retro-discal superior que se fija a la región superior de la cavidad glenoidea del temporal.
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DESPLAZAMIENTOS DISCALES
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