TMJ and occlusion Flashcards
What muscles open the mouth?
Lateral pterygoid
Geniohyoid
Mylohyoid
ABG
What muscles close the mouth?
Masseter
Temporalis
Medial pterygoid
What muscles are involved in protrusion?
Masseter
Medial pterygoid
Lateral pterygoid
What muscles are involved in retrusion?
Temporalis
Geniohyoid
ABG
What muscles are involved in lateral excursion?
Lateral pterygoid
Medial pterygoid
What muscles are involved in lateral movement?
Masseter
Temporalis
What innervates the MOM?
Vc
What innervates masseter?
Masseteric nerve
What innervates Temporalis?
Deep temporal nerve
What innervates the pterygoids?
Nerve to m. Pterygoid
Nerve to l. Pterygoid
What innervates Geniohyoid?
C1
What innervates mylohyoid?
Nerve to mylohyoid
What innervates ABG?
Nerve to mylohyoid
What movement is jaw opening?
Hinge
What movement is wide jaw opening?
Hinge and slide
What movement is protrusion?
Slide
Where does the condyle sit?
Glenoid fossa
What does the lateral ligament function to do?
Restricts posterior, lateral and inferior movement
Restricts contra lateral medial movement
Limits extent of pure hinge movement
What are the accessory ligaments?
Stylomandibular
Sphenomandibular
Pterygomandibular
What is the function of accessory ligaments?
Limits range of movement