Chapter 27: Normal Anatomy: Intraoral Images
Iannucci: Dental imagery, 5th Edition
MULTIPLE CHOICE
1. Compact bone is also called __________ bone.
a.
trabecular
b.
spongy
c.
cancellous
d.
cortical
2. (1) Cancellous bone is considered radiopaque. (2) Cortical bone is considered radiolucent.
a.
Both statements are true.
b.
Both statements are false.
c.
The first statement is true; the second statement is false.
d.
The first statement is false; the second statement is true.
3. The _________ the trabeculations, the _______ radiolucent the area of cancellous bone
appears.
a.
smaller; more
b.
larger; more
c.
larger; less
d.
both a and b
4. Cancellous bone is the soft, ________ bone located between two layers of _______ cortical
bone.
a.
spongy; spongy
b.
dense; dense
c.
spongy; dense
d.
dense; spongy
5. Which type of bone is composed of bony trabeculae?
a.
Cortical
b.
Dense
c.
Compact
d.
Cancellous
6. Which of the following describes a ridge?
a.
Linear protrusion of bone
b.
Sharp, thornlike projection of bone
c.
Small nodular bone
d.
Rounded prominence
7. A pointed, spikelike protrusion of bone is a
a.
process.
b.
ridge.
c.
spine.
d.
tubercle.
8. An empty space within the bone is known as a
a.
canal.
b.
foramen.
c.
fossa.
d.
sinus.
9. A foramen is a(n)
a.
opening or hole in bone that permits the passage of nerves and blood vessels.
b.
broad, shallow, scooped-out or depressed area of bone.
c.
hollow space, cavity, or recess in bone.
d.
sharp, thornlike projection of bone.
10. A suture is a(n)
a.
movable joint between any two bones in the body.
b.
immovable joint between any two bones in the body.
c.
movable joint between two bones in the skull.
d.
immovable joint between two bones in the skull.
11. A _________ is a bony wall or partition that divides two spaces or cavities.
a.
process
b.
ridge
c.
septum
d.
spine
12. Which of the following landmarks would appear radiolucent on a dental image?
a.
Septum
b.
Suture
c.
Tubercle
d.
Tuberosity
13. This foramen is almond shaped and is located between the apices of the maxillary central
incisors.
a.
Mental
b.
Lingual
c.
Superior
d.
Incisive
14. The ____________ nerve exits the maxilla through the incisive foramen.
a.
anterior superior alveolar
b.
middle superior alveolar
c.
posterior superior alveolar
d.
nasopalatine
15. On a _________ periapical image, the nasal fossa appears as a large ______________ area
located above the roots of the maxillary incisors.
a.
maxillary; radiopaque
b.
maxillary; radiolucent
c.
mandibular; radiopaque
d.
mandibular; radiolucent
16. The superior foramina of the incisive canal are _____ tiny openings or holes in bone.
a.
two
b.
four
c.
six
d.
eight
17. The superior foramina of the incisive canal are located on the __________ of the nasal cavity.
a.
lateral wall
b.
medial wall
c.
floor
d.
roof
18. On a periapical image, the maxillary sinuses appear as radiolucencies located superior to the
apices of the
a.
maxillary canines.
b.
maxillary central incisors.
c.
maxillary molars and premolars.
d.
maxillary incisors and canines.
19. The median palatal suture is located between the two __________ of the maxilla.
a.
inferior nasal conchae
b.
nasal cavities
c.
palatine processes
d.
maxillary sinuses
20. On a periapical image, the median palatal suture appears as a thin __________ line between
the _________________.
a.
radiopaque; maxillary lateral incisor and cuspid
b.
radiolucent; maxillary lateral incisor and cuspid
c.
radiopaque; maxillary central incisors
d.
radiolucent; maxillary central incisors
21. The lateral fossa is located between the
a.
maxillary canine and lateral incisor.
b.
mandibular canine and lateral incisor.
c.
maxillary canine and first premolar.
d.
mandibular canine and first premolar.
22. On a dental image, the lateral fossa appears as a __________ area of ____________
appearance, depending on the anatomy of the individual.
a.
radiopaque; consistent
b.
radiolucent; consistent
c.
radiopaque; variable
d.
radiolucent; variable
23. The lateral walls of the nasal cavity are formed by the __________ bone and the maxillae.
a.
temporal
b.
sphenoid
c.
ethmoid
d.
zygomatic
24. On a maxillary periapical image, the nasal septum may be superimposed over the
a.
canine.
b.
median palatal suture.
c.
greater palatine foramen.
d.
genial tubercles.
25. On a maxillary periapical image, the floor of the nasal cavity appears as a ________ band of
bone ________ the maxillary incisors.
a.
radiolucent; above
b.
radiolucent; below
c.
radiopaque; above
d.
radiopaque; below
26. The anterior nasal spine is located at the _____________ portion of the nasal cavity.
a.
anterior and superior
b.
anterior and inferior
c.
posterior and superior
d.
posterior and inferior
27. On a maxillary periapical image, the anterior nasal spine appears as a ____-shaped radiopaque
area located at the intersection of the floor of the nasal cavity and the nasal septum.
a.
T
b.
U
c.
V
d.
I
28. The inferior nasal conchae extend from the
a.
medial walls of the maxillary sinus.
b.
lateral walls of the maxillary sinus.
c.
medial walls of the nasal cavity.
d.
lateral walls of the nasal cavity.
29. On a maxillary periapical image, the inferior nasal conchae appear as a __________ mass
within the nasal cavity.
a.
well-demarcated radiolucent
b.
well-demarcated radiopaque
c.
diffuse radiolucent
d.
diffuse radiopaque
30. The superior foramina of the nasopalatine canal are located above the maxillary
____________.
a.
central incisors
b.
lateral incisors
c.
canines
d.
premolars and molars
31. Bony septa and nutrient canals may be seen within the walls of the
a.
median palatal suture.
b.
maxillary sinus.
c.
incisive foramen.
d.
anterior nasal spine.
32. The inverted Y refers to the intersection of the maxillary sinus and the
a.
median palatal suture.
b.
anterior nasal spine.
c.
incisive foramen.
d.
nasal cavity.
33. The inverted Y is a __________ line above the maxillary _________.
a.
radiopaque; canine
b.
radiopaque; first molar
c.
radiolucent; canine
d.
radiolucent; first molar
34. The maxillary tuberosity appears as a ___________ rounded prominence posterior to the
________ molar region.
a.
radiolucent; first
b.
radiolucent; third
c.
radiopaque; first
d.
radiopaque; third
35. The hamulus extends from the
a.
medial pterygoid plate of the sphenoid bone.
b.
lateral pterygoid plate of the sphenoid bone.
c.
styloid process.
d.
maxillary tuberosity.
36. On a maxillary periapical image, the zygomatic process appears as a __________ to the
maxillary first molar region.
a.
radiolucency located inferior
b.
radiopacity located superior
c.
radiolucency located superior
d.
radiopacity located inferior
37. Your patient is looking at her dental images and is pointing to the bilateral vertical section of
the mandible. What is she pointing to?
a.
Ramus
b.
Coronoid process
c.
Body
d.
Alveolar process
38. Which muscles attach to the genial tubercles?
a.
Digastric and genioglossus
b.
Genioglossus and geniohyoid
c.
Geniohyoid and digastric
d.
Mylohyoid and geniohyoid
39. On a periapical image, the genial tubercles appear as a ring-shaped __________ the apices of
the mandibular incisors.
a.
radiolucency below
b.
radiolucency above
c.
radiopacity below
d.
radiopacity above
40. The lingual foramen is in the center of the
a.
mental foramen.
b.
genial tubercles.
c.
anterior nasal spine.
d.
external oblique ridge.
41. Interdental nutrient canals are most often seen in the
a.
anterior maxilla.
b.
anterior mandible.
c.
posterior maxilla.
d.
posterior mandible.
42. Nutrient canals appear as ______________ lines on a periapical image.
a.
vertical radiolucent
b.
horizontal radiolucent
c.
vertical radiopaque
d.
horizontal radiopaque