Exam 1.7: Normal Intraoral Radiographic Anatomy Flashcards
What is the mid-palatal suture?
Thin, radioLUCENT line between maxillary centrals extending from anterior aspect of maxilla to posterior aspect of palate
What structure appears as thin radiolucent lines about roots of maxillary incisors
Floor of the nasal fossa
What is the nasal septum comprised of, and where might you see it?
Cartilage and the vomer bone, above central incisors
What represents the most anterior point on the maxilla
Anterior nasal spine
What structure is an ovoid radiolucency between maxillary incisors
Incisive foramen
Concavity in maxilla between roots of lateral and canine, bone is thinner here
Lateral fossa
Floor of nasal fossa and wall of maxillary sinus, useful in edentulous patients
Lateral canine area
How do the medial, inferior, and lateral walls of the maxillary sinus show up on images
Thin radioPACITIES
Where will you find the malar process of the zygoma?
Over the roots of the maxillary 1st molar
What are vertical radiopaque lines arising from the floor of sinus?
Sinus septations
How does the posterior superior alveolar canal show up on maxillary radiographs
Horizontal radiolucent bands
Where will you find the maxillary tuberosity?
Posterior to the 3rd molar
When might you see the nasolabial fold?
On Premolar Film when the patient’s mouth is slightly open
What type of PA might you see the coronoid process of the mandible?
Maxillary Molar PAs
Where might you see the Oblique Ridge of the Mandible?
It crossed the mandibular 2nd or 3rd Molar at the CEJ
Where might you see the internal oblique ridge?
Crossing the mandibular 2nd or 3rd molars at the apicies
This structure will appear as a radiolucent band of uniform width, below roots of mandibular molars
Mandibular canal
This ovoid radiolucency will be located inferior to the 1st or 2nd premolar (or between them) where 90% of mandibular nerves exit the jaw
Mental Foramen
How many genial tubercles are there?
4: 2 Inferior and 2 Superior
Where will you find the genial tubercles
Surrounding the radiolucent lingual foramen
This radiolucency is apical and interradicular to mandibular central incisors
Lingual foramen
If the film has a prominent submandibular fossa, where would you find it
Inferior to the internal oblique ridge
These are radiolucent lines in interdental bone, they are the site of neurovascular bundles feeding teeth
Nutrient canals
