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Extraoral Radiographic Anatomy

Extraoral Radiographic Anatomy. DENT 5102 Oral and Maxillofacial Radiology II. Lateral Oblique Projection. Lateral Oblique. Lateral Oblique Projection. The film is placed against the side of the patient’s face X-ray beam is directed postero-anteriorly from the opposite side.

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Extraoral Radiographic Anatomy

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  1. Extraoral Radiographic Anatomy DENT 5102 Oral and Maxillofacial Radiology II

  2. Lateral Oblique Projection

  3. Lateral Oblique

  4. Lateral Oblique Projection • The film is placed against the side of the patient’s face • X-ray beam is directed postero-anteriorly from the opposite side

  5. Lateral Oblique Projection

  6. Coronoid Process • Condyle • Sigmoid notch • Zygomatic arch • Mandibular foramen • Hyoid bone

  7. Maxillary tuberosity • Lower border of mandible (side away from film) • Mental foramen • Superior border of tongue • Styloid process • Mandibular canal

  8. Zygomatic process of maxilla • Vertrebral column • Lower border of mandible (side closer to film) • Zygoma • Zygomatic arch

  9. Lower border of orbit • Neck of condyle • Vertebral column • Hyoid bone

  10. Lateral Head Projection

  11. Lateral Head

  12. Lateral Skull • Midsagittal plane of the patient’s head is parallel to the film • X-ray beam is perpendicular to the film

  13. Lateral Head

  14. A= Frontal sinus • B= Floor of the anterior cranial fossa • C= Anterior clinoid process • D= Posterior clinoid process • E= Pituitary fossa

  15. A= Nasal bone • B= Zygomatic process of the maxilla closer to the film • C= Ethmoid sinus • D= Pterygomaxillary fissure

  16. A= Orbital plates of frontal bone • B= Orbit • C= Sphenoid sinus • D= Cross section of the greater wing of the sphenoid (ant. wall of middle cranial fossa)

  17. A= Zygomatic process of the maxilla closer to the film • B= Zygomatic process of the maxilla further to the film • C= Dorsal border of tongue • D= Pterygoid plate complex • E= Soft palate

  18. A= Hard palate • B= Lingual cortical plate of mandible (anterior part) • C= Nasopharynx

  19. Postero-Anterior Projection

  20. Postero-anterior (PA) Skull

  21. PA Skull Projection • Midsagittal plane of the head is perpendicular to the film • Forehead and the nose touch the film • X-ray beam is perpendicular to the film

  22. A= Orbital plate of frontal bone • B= Frontal spine • C= Sup. border of orbit • D= Sphenoid sinus

  23. A= Lesser wing of sphenoid • B= Ethmoid sinus • C= Middle nasal meatus • D= Oblique orbital line • E= Floor of posterior cranial fossa

  24. A= Lacrimal canal • B= Middle nasal concha • C= Vomer • D= Mastoid air cells • E= Atlas-occipital condyle articulation

  25. A= Zygomatic process of maxilla • B= Anterior border of ascending ramus • C= Coronoid process • D= Odontoid process of axis • E= Maxillary tuberosity

  26. A= Inferior nasal concha • B= Inferior nasal meatus • C= Occipital condyle • D= Maxillary sinus

  27. A= Wall of nasal fossa • B= Angle of the mandible • C= Body of the mandible • D= Maxillary sinus • E= Nasal septum

  28. Water’s Projection

  29. Waters’ Projection

  30. Waters’ Projection • Midsagittal plane of the head is perpendicular to the film • chin touches the film • X-ray beam is perpendicular to the film

  31. A= Frontal sinus • B=Crista galli • C=Supraorbital notch • D=Lesser wing of sphenoid

  32. A= Foramen rotundum • B= Foramen ovale • C= Nasal septum • D= Floor of middle cranial fossa

  33. A= Sphenoid sinus • B= Infraorbital foramen and canal • C= Superior orbital fissure

  34. A= Inferior aspect of the base of skull • B= Odontoid process of axis • C= Inferior border of body of mandible

  35. Panoramic

  36. A= Infraorbital rim • B= Zygomatic process of maxilla • C= Condyle • D= Coronoid process

  37. A= Common nasal meatus • B= Inferior nasal concha • C= Hard palate • D= Superior border of the tongue

  38. A= Nasal septum • B= Hyoid bone • C= Zygomatic process of temporal bone • D= Inferior nasal meatus

  39. A= Posterior wall of maxillary sinus • B= Hard palate • C= Soft palate • D= Maxillary tuberosity

  40. A= Inferior border of mandibular canal • B= Left maxillary sinus • C= Ear lobe • D= Mental foramen

  41. Articular eminence • Sigmoid notch • Shadow of contralateral mandible • Glenoid fossa • Posterior border of ramus • Inferior border of mandible

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