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Temporomandibular joint

Temporomandibular joint. Type…. Articulating bones Capsule Synovial membrane Articular disc Ligaments. Movements. TMJ. articulation. Type :- synovial,condylar. Articulating bones :-articular surfaces are covered by fibro-cartilage. Mandibular head. Mandibular fossa &tubercle.

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Temporomandibular joint

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  1. Temporomandibular joint

  2. Type…. Articulating bones Capsule Synovial membrane Articular disc Ligaments. Movements. TMJ

  3. articulation

  4. Type:- synovial,condylar. • Articulating bones :-articular surfaces are covered by fibro-cartilage. • Mandibular head • Mandibular fossa &tubercle

  5. I. Classification of Joints Types of Joints: • Synovial

  6. Type: *synovial but articular surfaces covered by fibrocartilage*contain articular disc (shape) *capsule attached to the articular surface

  7. Capsule of TMJ Articular disc Lateral pterygoid muscle

  8. Lateral tempromandibular ligament ligaments capsule • The lateral tempromandibular ligament Sphenomandibualr ligament Stylomandibualr ligament Ligaments

  9. Important relations of tmj Anterior posterior

  10. Medial lateral

  11. Auriculotemporal nerve Sphenomandibular Ligament Maxillary A. Inf.alveolar N.&Vs. Medial aspect of TMJ

  12. Nerve supply

  13. Muscles of mastication1- masseter

  14. Temporalis

  15. Lateral ptergoid

  16. Medial pterygoid

  17. Movements

  18. Important questions1-give short account on Tempromandibular joint • Articulation 1. above : the articular tubercle and the mandibular fossa of the temporal bone 2. below : the head (condyloid process) of the mandible • Type: synovial • Enumerate ligament The lateral temporomandibular ligament, The sphenomandibular ligament , The stylomandibular ligament • Nerve supply: Auriculotemporal and masseteric branches of the mandibular nerve

  19. Give short account on lateral ptrygoid muscle • Origin: greater wing of sphenoid and lateral ptrygoid plate • Insertion: neck of the mandible and articular disc • Nerve supply: mandibular nerve • Action: pull neck of mandible forward • All muscles of mastication innervated by mandibular nerve

  20. MCQ • Protrusion of the mandible is brought about by contraction of the…………. • Lateral pterygoid muscle • Temporalis muscle • Masseter muscle • Suprahyoid muscle • The Chewing movement of the mandible is brought about by contraction of the…………. • Lateral and medial pterygoid muscles • Temporalis muscle • Masseter muscle • Suprahyoid muscle • the medial ptrygoid muscle ----------- the mandible • Protrude • Retract • Depress • Elevate

  21. the lateral ptrygoid muscle ----------- the mandible • Protrude • Retract • Depress • Elevate • the posterior fibers of temporalis muscle ----------- the mandible • Protrude • Retract • Depress • Elevate • the masseter muscle ----------- the mandible • Protrude • Retract • Depress • Elevate • the digastric and geniohyoid muscles ----------- the mandible • Protrude • Retract • Depress • Elevate

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