Normal Radiographic Anatomy Flashcards
What are the possible intra-oral radiographic views? (3)
- Bitewings
- Periapicals
- Occlusals
What are the possible extra-oral radiographic views? (3)
- Panoramic (DPT)
- Cephalometric
- Cone beam computed tomography (CT)
Where is the alveolar crest?
- Where the lamina dura of 2 teeth sockets are joined together with bone going over the top of the crest
What do periapical radiographs show?
- Shows the full length of at least one tooth
- Shows surrounding anatomical features
Air shadows and soft tissues are normal radiolucent features. Give examples of these? (7)
- Oral cavity
- Nasal cavity, orbits
- Maxillary sinus (and other sinuses on facial views)
- Pharynx and larynx
- Inferior alveolar canal, foraminae
- Trabecular spaces
- Pterygomaxillary fissure
Hard tissues are examples of normal radiopaque features. Give examples of these? (2)
- Bones: ridges, canals, septa
- Teeth
Soft tissues adjacent to air are examples of normal radiopaque features. Give examples of these? (5)
- Tongue
- Soft palate
- Nasal tissues
- Lips
- Ear lobes
What are hard tissue anatomical features that can be seen on a panoramic radiograph? (7)
- Hard (bony) palate
- Nasal septum
- Nasal conchae
- Zygomatic buttress (process)
- Zygomatic arch vertebrae
- Hyoid
- Styloid process
What are soft tissue anatomical features that can be seen on a panoramic radiograph? (7)
- Tongue
- Lips
- Soft palate
- Nasal soft tissues (philtrum, alae)
- Ear lobe
- Epiglottis
- Posterior pharyngeal wall
What are common air cavities that can be seen on a radiograph? (3)
- Maxillary sinus
- Nasal cavity
- Pharynx (naso, oro, laryngo)
What are common canals and foramina that can be seen on a radiograph? (4)
- Inferior alveolar (ID) canal
- Mental foramen
- External auditory meatus (important - can usually see very clearly on panoramic radiograph)
- Pterygo-maxillary fissure
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