Anatomy II Head & Neck BY: DR.Yahya Alfarra CANADIAN BOARD IN DENTISTRY - PowerPoint PPT Presentation

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anatomy ii head neck by dr yahya alfarra canadian board in dentistry n.
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Anatomy II Head & Neck BY: DR.Yahya Alfarra CANADIAN BOARD IN DENTISTRY PowerPoint Presentation
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Anatomy II Head & Neck BY: DR.Yahya Alfarra CANADIAN BOARD IN DENTISTRY

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  1. Anatomy II Head & Neck BY:DR.Yahya AlfarraCANADIAN BOARD IN DENTISTRY

  2. JOINTS OF head & neck 1- T.M.J 2- Atlanto-occipital joint (articualtion between occipital condyles of the skull & atlas vertebrae) 3- Atlanto- axial joints (articulation between atlas & body of axis)

  3. There are two bones which make up the TMJ,the temporal bone and the mandible.

  4. T.M.J 1- Type of joint : Synovial joint 2- Articualr surface : • A bove : articualr tubecle & Md. Fossa of the temporal bone • Below : condyloid process ( head of Md.) 3- capsule : attached arround articualr surface a bove & below 4- The intracapsualr articualr disc : The joint cavity is divided into an upper & a lower compartments by an intra articular disc of fibrocartialge The upper surfce of the disc is concavo-convex to fit into articualr tubercle while the lower surface is cocave to fit into the head of mandible.

  5. 5- Accessory ligament: a ) lateral (temporomandibualr ligament) (the main ligament of T.M.J) it’s triangualr in shape , it’s base is attached to the root of zygoma while it’s apex attached to the lateral aspect of neck of Md. b ) spheno-mandibualr ligament: It’s attached above to the spine of sphenoid & below to the lingula of Md. C ) stylo- mandibualr ligament: It’s attached above to the lat. Aspect of styloid process & below to post. Border of ramus of Md. d) Pterygomandibualr ligament: It extends to the post. End mylohyoid line of Md. 6- Nerve supply of joint: Auriculo Temporal Nerve

  6. lateral ligament

  7. stylomandibular ligament

  8. Sphenomandibularl ligament

  9. 7- Movements