HEAD AND NECK ANATOMY OSTEOLOGY - PowerPoint PPT Presentation

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HEAD AND NECK ANATOMY OSTEOLOGY

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HEAD AND NECK ANATOMY OSTEOLOGY
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HEAD AND NECK ANATOMY OSTEOLOGY

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  1. HEAD AND NECK ANATOMYOSTEOLOGY UNCLASSIFIED//REL TO NATO/ISAF

  2. Terms • Related to these planes are the following paired descriptive terms: • anterior – nearer the front surface of the body • posterior – nearer the rear surface of the body AFAMS Dental Advisor Team

  3. Terms • Superficial and deep refer to proximity to the skin surface. • medial – closer to the midline • lateral – further from the midline of the body AFAMS Dental Advisor Team

  4. Osteology • The 22 skull bones can be classified into two parts: • The Cranium • The Facial Skeleton AFAMS Dental Advisor Team

  5. skull bones • The Cranium • The Facial Skeleton AFAMS Dental Advisor Team

  6. THE FACIAL SKELETON: The Maxilla • The maxilla or upper jaw AFAMS Dental Advisor Team

  7. THE FACIAL SKELETON: The Maxilla AFAMS Dental Advisor Team

  8. THE FACIAL SKELETON: The Maxilla • The posterior surface of the maxilla is the tuberosity. AFAMS Dental Advisor Team

  9. Bony Palate Incisive bone (Premaxilla) Incisive canal Maxilla, palatine process Greater Palatine bone palatine foramina Lesser Posterior nasal spine Hamulus tubercle Medial pterygoid plate: Pterygoidfossa Vomer AFAMS Dental Advisor Team

  10. THE FACIAL SKELETON: The Maxilla • The alveolar process is the most inferior portion of the maxilla that surrounds and supports the maxillary teeth. AFAMS Dental Advisor Team

  11. Mandible • The mandible or lower jaw is the strongest and largest bone in the facial skeleton. • It is made up of various components; a horizontal horseshoe shaped portion called the body and two vertical portions each called the ascending ramus, which ends in two processes. AFAMS Dental Advisor Team

  12. Mandible AFAMS Dental Advisor Team

  13. Mandible • Where the inferior border of the body meets the posterior border of the ramus, the angle of the mandible is formed. AFAMS Dental Advisor Team

  14. Mandible • The body of the mandible presents two surfaces. • The anterior (external) surface presents a vertical medial line, the symphysis, which terminates inferiorly in the mental protuberance; this produces the chin. AFAMS Dental Advisor Team

  15. Mandible AFAMS Dental Advisor Team

  16. Mandible • Also found on the external surface below and halfway between the apices of the mandibular premolars is the mental foramen. AFAMS Dental Advisor Team

  17. Mandible • The ramusof the mandible is nearly vertical in position. Its lateral surface is flat and marked by muscular impressions for the insertion of muscles AFAMS Dental Advisor Team

  18. Mandible mandibular foramen AFAMS Dental Advisor Team

  19. Mandible • The mandibular foramen leads into the mandibular canal which runs through the body of the mandible. • The canal conveys vessels and nerves to the teeth and communicates with the outer surface of the body at the mental foramen. AFAMS Dental Advisor Team

  20. Mandible The superior border of the ramus is composed of two processes: • The Coronoid Process • the most anterior process on the ramus. • The Condylar Process • The head articulates with the temporal fossa of the temporal bone, thus forming the temporomandibular joint. AFAMS Dental Advisor Team

  21. Movements of the Mandible AFAMS Dental Advisor Team

  22. THE TEMPOROMANDIBULAR JOINT • This is the most complex type of joint in the body. AFAMS Dental Advisor Team

  23. Movements of the Mandible Normal Occlusion Mouth Wide Open AFAMS Dental Advisor Team

  24. Movements of the Mandible Protrusion Dislocation AFAMS Dental Advisor Team

  25. Movements of the Mandible • There are two basic forms of movements that we need to discuss when referring to the TMJ: • Rotation or hinge • Translation AFAMS Dental Advisor Team

  26. سوالات؟ Questions? UNCLASSIFIED//REL TO NATO/ISAF