Dental Radiography -- Principles and Techniques
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| Extraoral Images | - placed outside the mouth during xray exposure
- most common is pano
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| Purpose | overall view of skull and jaws
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| Cephalostat | pano xray tube head used in conjunction w special extension arm
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| Film | - sizes vary
- 5x7 or 8x10 or size 4 occlusal receptor
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| Grid | -used to reduce amount of scatter radiation that reaches extraoral film during exposure
-decrease film fog and increase contrast
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| Lateral Jaw Imaging | - examine post region of MD
- useful in kids, PT w limited jaw movement
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| Lateral Jaw Imaging -- Body of MD | eval impacted teeth, fractures, and lesions
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| Lateral Jaw Imaging -- Ramus of MD | - eval impacted 3rd molars, lg lesions, fractures extend past ramus
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| Skull Imaging | examine bones of the face and skull
- used in oral surgery and ortho
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| Lateral Cephalometric Projection | - eval fcaial growth and development, trauma, and disease
- bones of face/skull, soft tissue profile of face
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| Postanterior Projection | - eval facial growth and development, trauma and disease
- frontal and ethmoid sinuses, orbits, and nasal cavity
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| Waters Projection | - eval MX sinus, frontal and ethmoid sinuses and nasal cavity
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| Submentovertex Projection | - ID posi of condyles, base of skull, eval fractures in zygomatic
- Sphenoid and ethmoid sinuses, lateral wall of MX sinus
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| Reverse Towne Projection | - ID fractures of condylar neck and ramus area
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| TMJ Imaging | - arthrography of MRI must b used to examine this area
- transcranial projection and TMJ tomography used
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| Transcranial Projection (Lindblom Technique) | eval superior surface of condyle and articular eminence
- Used to eval movement
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| TMJ Tomography | examine TMJ
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Created by:
summerbradley
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