Transcript 03 Extraoral Anatomy 08

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 posteroanteriorly from the opposite side
Lateral Oblique Projection
A.
B.
C.
D.
E.
F.
Coronoid Process
Condyle
Sigmoid notch
Zygomatic arch
Mandibular foramen
Hyoid bone
A. Maxillary tuberosity
B. Lower border of
mandible (side away
from film)
C. Mental foramen
D. Superior border of
tongue
E. Styloid process
F. Mandibular canal
A. Zygomatic process of
maxilla
B. Vertrebral column
C. Lower border of
mandible (side closer
to film)
D. Zygoma
E. Zygomatic arch
A.
B.
C.
D.
Lower border of orbit
Neck of condyle
Vertebral column
Hyoid bone
Lateral Head
Projection
Lateral Head
Lateral Skull
• Midsagittal plane of the patient’s
head is parallel to the film
• X-ray beam is perpendicular to the
film
Lateral Head
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•
A= Frontal sinus
B= Floor of the anterior cranial fossa
C= Anterior clinoid process
D= Posterior clinoid process
E= Pituitary fossa
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A= Nasal bone
B= Zygomatic process of the maxilla closer to the film
C= Ethmoid sinus
D= Pterygomaxillary fissure
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•
•
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)
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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
• A= Hard palate
• B= Lingual cortical plate of mandible (anterior part)
• C= Nasopharynx
Postero-Anterior
Projection
Postero-anterior (PA) Skull
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
•
•
•
•
A= Orbital plate of frontal bone
B= Frontal spine
C= Sup. border of orbit
D= Sphenoid sinus
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A= Lesser wing of sphenoid
B= Ethmoid sinus
C= Middle nasal meatus
D= Oblique orbital line
E= Floor of posterior cranial fossa
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A= Lacrimal canal
B= Middle nasal concha
C= Vomer
D= Mastoid air cells
E= Atlas-occipital condyle articulation
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A= Zygomatic process of maxilla
B= Anterior border of ascending ramus
C= Coronoid process
D= Odontoid process of axis
E= Maxillary tuberosity
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A= Inferior nasal concha
B= Inferior nasal meatus
C= Occipital condyle
D= Maxillary sinus
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•
A= Wall of nasal fossa
B= Angle of the mandible
C= Body of the mandible
D= Maxillary sinus
E= Nasal septum
Water’s
Projection
Waters’ Projection
Waters’ Projection
• Midsagittal plane of the head is
perpendicular to the film
• chin touches the film
• X-ray beam is perpendicular to the
film
•
•
•
•
A= Frontal sinus
B=Crista galli
C=Supraorbital notch
D=Lesser wing of sphenoid
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A= Foramen rotundum
B= Foramen ovale
C= Nasal septum
D= Floor of middle cranial fossa
• A= Sphenoid sinus
• B= Infraorbital foramen and canal
• C= Superior orbital fissure
• A= Inferior aspect of the base of skull
• B= Odontoid process of axis
• C= Inferior border of body of mandible
Panoramic
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A= Infraorbital rim
B= Zygomatic process of maxilla
C= Condyle
D= Coronoid process
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A= Common nasal meatus
B= Inferior nasal concha
C= Hard palate
D= Superior border of the tongue
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A= Nasal septum
B= Hyoid bone
C= Zygomatic process of temporal bone
D= Inferior nasal meatus
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A= Posterior wall of maxillary sinus
B= Hard palate
C= Soft palate
D= Maxillary tuberosity
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•
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•
A= Inferior border of mandibular canal
B= Left maxillary sinus
C= Ear lobe
D= Mental foramen
A.
B.
C.
D.
E.
F.
Articular eminence
Sigmoid notch
Shadow of contralateral mandible
Glenoid fossa
Posterior border of ramus
Inferior border of mandible