MANDIBLE RT 233 MANDIBLE ANATOMY rami coronoid process

MANDIBLE RT 233

MANDIBLE ANATOMY rami coronoid process body mental foramen condyle mental symphysis alveolar process mentum mental protuberance

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 v v 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 v v 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 v v Heads of condyles are visible through mastoid processes. Condyloid processes are well visualized, slightly elongated. v Proper Density v No rotation or tilt

PA Axial (body) Mandible Positioning

PA Axial (body) Mandible Radiographs v v v TMJ’s just inferior to mastoid process Symmetric rami Adequate contrast and density

AP Axial – Towne Method

AP Axial- Towne Method Radiograph v v v 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 v v v 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 v v v 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 v v No overlap of mentum by the opposite side of mandible No foreshortening of the mentum region

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Panorex Mandible

Panorex Mandible Radiographs v v v Demonstrates teeth, mandible, TMJ’s Density are uniform across image No artifacts