MANDIBLE
RT 233
MANDIBLE ANATOMY
rami
coronoid process
body
mental foramen
condyle
mental symphysis
alveolar process mentum
mental protuberance
Mandible
Mandible
Mandible
Indications for x-ray
Fractures
Neoplastic Processes
Inflammatory Processes
Mandible
Essential Projections: Mandible
PA – rami
 PA-body
 PA axial – rami
 PA axial-body
 Axiolateral obliques for rami, body, symphysis

Additional Projections
SMV
AP Axial (Townes)
True Lateral
PA Mandible (for rami)
9

Mandible-PA (for rami)
10




Mandibular rami
Lateral portion of body
are visualized
Demonstrate the entire
mandible without
rotation or tilt
Will show medial or
lateral displacement of
fractures
PA Mandible Rami- Diagram
11
Projection??
Projection?
Justify your answer
Mandible-PA (for body)
14

Mandible-PA (for body)
15


Contrast and density are
sufficient to view body
and rami
Sharp bony detail
indicating no motion
Projection?
Identify labels:…..
Mandible-PA Axial (for rami)
17

Mandible- PA Axial (for rami)
18


Heads of condyles are
visible through mastoid
processes.
Condyloid processes are
well visualized, slightly
elongated.

Proper Density

No rotation or tilt
PA Axial (body)
Mandible Positioning

PA Axial (body)
Mandible Radiographs



TMJ’s just inferior to mastoid
process
Symmetric rami
Adequate contrast and
density
AP Axial – Towne Method

AP Axial- Towne Method Radiograph



Demonstrates condyloid
processes symmetrically
Clear visualization of TMJ
fossae and condyle
relationship
Minimal SI of TM fossae and
mastoid portions
Axiolateral Oblique Positioning for Ramus

Axiolateral Oblique Radiograph for
Ramus



No overlap of ramus by
opposite side of
mandible
No elongation or
foreshortening of ramus
No superimposition
of ramus by c-spine
Axiolateral Oblique Positioning for
Body

Axiolateral Oblique Radiograph for
Body



No overlap of body by
opposite side of mandible
No elongation or
foreshortening of body
No superimposition of body
by c-spine
Axiolateral Oblique Positioning for
Mandibular Symphysis

Axiolateral Oblique Radiograph for
Mandibular symphysis


No overlap of mentum by
the opposite side of
mandible
No foreshortening of the
mentum region
Mandible
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Mandible
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Panorex Mandible

Panorex Mandible Radiographs



Demonstrates teeth,
mandible, TMJ’s
Density are uniform across
image
No artifacts