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

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Presentation on theme: "2  Type….  Articulating bones  Capsule  Synovial membrane  Articular disc  Ligaments.  Movements."— Presentation transcript:

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

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

5 Types of Joints: Synovial

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7 7 Capsule of TMJ Lateral pterygoid muscle Articular disc

8  The lateral tempromandibular ligament Lateral tempromandibular ligament capsule Sphenomandibualr ligament Stylomandibualr ligament Ligaments

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10 Anterior posterior

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12 12 Medial aspect of TMJ Sphenomandibular Ligament Inf.alveolar N.&Vs. Maxillary A. Auriculotemporal nerve

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21  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

22  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

23  Protrusion of the mandible is brought about by contraction of the…………. A. Lateral pterygoid muscle B. Temporalis muscle C. Masseter muscle D. Suprahyoid muscle  The Chewing movement of the mandible is brought about by contraction of the…………. A. Lateral and medial pterygoid muscles B. Temporalis muscle C. Masseter muscle D. Suprahyoid muscle  the medial ptrygoid muscle ----------- the mandible 1. Protrude 2. Retract 3. Depress 4. Elevate

24  the lateral ptrygoid muscle ----------- the mandible 1. Protrude 2. Retract 3. Depress 4. Elevate  the posterior fibers of temporalis muscle ----------- the mandible 1. Protrude 2. Retract 3. Depress 4. Elevate  the masseter muscle ----------- the mandible 1. Protrude 2. Retract 3. Depress 4. Elevate  the digastric and geniohyoid muscles ----------- the mandible 1. Protrude 2. Retract 3. Depress 4. Elevate


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