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Dental Radiography Essentials
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Dental Radiography Essentials
Dental Radiography Essentials
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1
Question
What is the enamel’s radiographic appearance and why?
Answer
Enamel appears radiopaque because it is ~90% mineralized.
2
Question
Which tooth structure is radiolucent and what is it composed of?
Answer
Pulp; soft tissue.
3
Question
What type of radiograph shows the area surrounding the apex of a tooth?
Answer
Periapical radiograph.
4
Question
What radiograph type interproximal surfaces and can be horizontal or vertical?
Answer
Bitewing radiograph.
5
Question
What is the patient radiographic projection for a large section of the dental arch called?
Answer
Occlusal radiograph.
6
Question
Define the term radiopaque.
Answer
White on radiographs; dense structures absorb more X-rays.
7
Question
What does a FMX typically consist of?
Answer
14 periapical radiographs and 4 bitewings.
8
Question
What does the SLOB rule help determine in radiography?
Answer
To identify object position using multiple projections.
9
Question
What does the term BWX stand for?
Answer
Bitewing radiograph.
10
Question
What is cortical bone described as in radiographs?
Answer
Dense outer layer; radiopaque.
11
Question
What is cancellous bone characterized by on radiographs?
Answer
Trabeculae forming a lattice; marrow spaces radiolucent.
12
Question
Where is the alveolar crest located?
Answer
Gingival margin of the alveolar process between teeth.
13
Question
What does the periodontal ligament space represent clinically?
Answer
Space between cementum and lamina dura; enlarges with occlusal force.
14
Question
Where is the mental foramen commonly located?
Answer
Midway between the upper and lower borders of the mandible in the premolar area.
15
Question
What radiographic pitfall can occur with the mental foramen?
Answer
May look like pathology if transposed over premolar apices.
16
Question
What region does the submandibular gland fossa pertain to?
Answer
Lingual side of the mandible below the mylohyoid ridge.
17
Question
Why does the submandibular gland fossa appear radiolucent?
Answer
Thin bone in the area allows more X-ray transmission.
18
Question
What feature helps differentiate the submandibular gland fossa from pathology?
Answer
Bilateral appearance.
19
Question
Where is lamina dura located relative to a tooth?
Answer
Around the tooth and around the recently extracted socket.
20
Question
What does the periodontal ligament space describe on a radiograph?
Answer
The radiolucent space between cementum and lamina dura.
21
Question
Where is the mental foramen typically located?
Answer
Midway between the upper and lower borders of the mandible in the premolar area.
22
Question
What imaging pitfall can occur with the mental foramen?
Answer
It may look like pathology if transposed over premolar apices.
23
Question
Where is the submandibular gland fossa located?
Answer
On the lingual side of the mandible below the mylohyoid ridge.
24
Question
Why does the submandibular gland fossa appear radiolucent?
Answer
Because of the thinness of bone in that area.
25
Question
What is another name for the Inferior Alveolar Canal?
Answer
Mandibular canal.
26
Question
Where does the mandibular canal run?
Answer
From the mandibular foramen to the mental foramen.
27
Question
Why is the mandibular canal clinically significant during dental extractions?
Answer
It runs close to molar roots, especially third molars, posing extraction risks.
28
Question
What is another name for the mylohyoid ridge?
Answer
Internal oblique ridge.
29
Question
Where is the mylohyoid ridge located?
Answer
On the lingual surface of the mandible, from the third molar area to the premolar area.
30
Question
What muscle attaches to the mylohyoid ridge?
Answer
The mylohyoid muscle.