radigraphic imaging in maxillofacial trauma
TRANSCRIPT
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RADIGRAPHIC EXAMINATION IN MAXILLOFACIAL TRAUMA
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Radiological examination
Useful diagnostic aid.
Radiation cost
Financial cost
Urgency of the treatment.
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Projections for facial fractures
For fractures of middle third of the face
- Occipitomental view
- Submentovertex view
- Lateral skull
- PA view – water’s position
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For zygomatic complex fracture
- Occipitomental view
- Submentovertex view
- PA view – water’s position
For mandibular fractures
- OPG
- Right & left lateral oblique view of
mandible
- PA view of mandible
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Radiological interpretation of
facial trauma
You see what you look for…!!!!
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Occipitomental projection
Fractures & other signs are
commonly found.
Campbell’s and trapnell’s lines
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Dolan & Jacoby’s line
A) Orbital line.
B) Zygomatic line.
C) Maxillary line.
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4 ‘S’ by Delbalso et al
Symmetry.
Sharpness – Bright sign, Trapdoor sign.
Sinus.
Soft tissues.
foreign bodies, emphysema.
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HOT sites of fracture on
face.
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Radiographic signs of fracture.
Separation sign.
Sutural diastasis.
Overlap sign.
Abnormal linear density
Disappearing fragment sign.
Abnormal angulation.
Step deformity
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Indirect signs.
Soft tissue swelling.
localized – attention to that part
Paranasal sinus opacification.
Air in the soft tissues.
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CT scan
Provides images in thin slices,
avoid superimposition of
structures.
Increased contrast- foreign
bodies.
Axial CT scan – transverse
plane.
Coronal CT scan – orbital
examination
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MRI- soft tissue injury, CSF leak.
Recent advances
Spiral & Multislice CT
- Much faster & can provide 9 times larger image.
- High quality reconstruction.
3D CT scan.
Angiography, arthrography.
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Conclusion.
Surgical outcome
Treatment planning
Accurate diagnosis
Careful clinical examination
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References.
Oral & maxillofacial trauma- Fonseca,vol 1
Maxillofacial Injuries- Rowe & Williams
Textbook of oral & maxillofacial surgery by Peter
Ward Booth.
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