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Worksheets

Intraoral Radiographic Anatomy

Total questions: 46

Worksheet time: 23mins

Name
Class
Date
1.

Which radiolucent anatomic landmark is indicated by the black arrows?

a)

Incisive foramen

b)

Superior foramina of the incisive canal

c)

Median palatal suture

d)

Lateral fossa

e)

Nasal cavity

2.

Which small, round radiolucent anatomic landmark(s) are indicated by the black arrows?

a)

Lateral fossa

b)

Median palatal suture

c)

Nasal cavity

d)

Inferior nasal conchae

e)

Superior foramina of the incisive canal

3.

Which radiolucent anatomic landmark is indicated by the white arrows?

a)

Incisive foramen

b)

Nasal cavity

c)

Nasal septum

d)

Median palatal suture

4.

Which radiolucent anatomic landmark is indicated by the black arrows?

a)

Nasopalatine suture

b)

Lateral fossa

c)

Incisive foramen

5.

Which large radiolucent anatomic landmark is indicated by the black arrows?

a)

Nasal septum

b)

Median palatal suture

c)

Nasal cavity

d)

Maxillary sinuses

6.

Which radiopaque anatomic landmark is indicated by the black arrows?

a)

Nasal septum

b)

Floor of the nasal cavity

c)

Anterior nasal spine

d)

Inferior nasal conchae

e)

Maxillary sinus

7.

Which radiopaque anatomic landmark is indicated by the black arrows?

a)

Soft tissue of the nose

b)

Floor of the nasal cavity

c)

Anterior nasal spine

d)

Inferior nasal conchae

e)

Maxillary sinus

8.

Which radiopaque anatomic landmark is indicated by the black arrows?

a)

Nasal septum

b)

Floor of the nasal cavity

c)

Anterior nasal spine

d)

Inferior nasal conchae

e)

Maxillary sinus

9.

Which radiopaque anatomic landmarks are indicated by the white arrows?

a)

Nasal septum

b)

Floor of the nasal cavity

c)

Anterior nasal spine

d)

Inferior nasal conchae

e)

Maxillary sinus

10.

Which radiolucent anatomic landmark is seen above the apices of maxillary molars, indicated by the black arrows?

a)

Maxillary tuberosity

b)

Zygomatic process of the maxilla

c)

Maxillary sinus

d)

Nutrient canals

11.

Which radiopaque anatomic landmark is seen within the maxillary sinus and indicated by the white arrow?

a)

Septum

b)

Nutrient canals

c)

Inverted Y

d)

Maxillary tuberosity

e)

Hamulus

12.

Which radiolucent anatomic landmark, bounded by radiopaque bands is seen within the maxillary sinus and indicated by the white arrows?

a)

Septa

b)

Nutrient canals

c)

Inverted Y

d)

Maxillary sinus

e)

Zygomatic process of the maxilla

13.

Which radiopaque anatomic landmark is indicated by the white arrows?

a)

Septa

b)

Nutrient canals

c)

Inverted Y-line of Ennis

d)

Maxillary tuberosity

e)

Zygoma

14.

The Inverted Y is made up of which two other anatomic landmarks?

a)

Floor of the maxillary sinus and floor of the nasal cavity

b)

Nasal septum and floor of the maxillary sinus

c)

Zygomatic process and maxillary sinus

15.

The radiopaque bulge indicated by the white arrows is which radiopaque anatomic landmark?

a)

Maxillary tuberosity

b)

Hamulus

c)

Zygomatic process of the maxilla

d)

Zygoma

e)

Genial tubercles

16.

Which anatomic landmark is a radiopaque hook-like landmark located posterior to the maxillary tuberosity?

a)

Hamulus

b)

Zygomatic process of the maxilla

c)

Zygoma

d)

Genial tubercles

e)

Lingual foramen

17.

Which J-shaped or U-shaped radiopacity is seen here, indicated by the black arrows?

a)

Zygomatic process of the maxilla

b)

Zygoma

c)

Genial tubercles

d)

Lingual foramen

e)

Mental ridge

18.

Which anatomic landmark is seen as a diffuse radiopaque band extending posteriorly from the zygomatic process?

a)

Zygoma

b)

Genial tubercles

c)

Maxillary sinus

d)

Mental ridge

e)

Coronoid process

19.

Which ring-shaped radiopacity is seen below the mandibular incisors?

a)

Genial tubercles

b)

Lingual foramen

c)

Mental ridge

d)

Mental fossa

e)

Mental foramen

20.

Which anatomic landmark is seen as a small radiolucent dot below the mandibular incisors, indicated by the white arrow?

a)

Genial tubercles

b)

Lingual foramen

c)

Mental fossa

d)

Mental foramen

e)

Mental ridge

21.

Which anatomic landmark is seen as a thick radiopaque band extending from the premolar region to the incisor region? (indicated by the black arrows)

a)

Mental ridge

b)

Mental fossa

c)

Mental foramen

d)

Mandibular canal

22.

Which radiolucent anatomic landmark is indicated by the black circle?

a)

Mental fossa

b)

Mental foramen

c)

Mandibular canal

d)

Mylohyoid ridge

e)

External oblique ridge

23.

Which small, round, radiolucent anatomic landmark is frequently misdiagnosed as a periapical lesion?

a)

Lingual foramen

b)

Mental fossa

c)

Mental foramen

d)

Mandibular canal

e)

Genial tubercles

24.

Which mandibular anatomic landmark is seen as a radiolucent band outlined by two thin radiopaque lines, indicated by the black arrows?

a)

Mandibular canal

b)

Mylohyoid ridge

c)

External oblique ridge

d)

Anterior border of the ramus

e)

Submandibular fossa

25.

What is the dense radiopaque band that extends downward and forward from the molar region, indicated by the black arrows?

a)

Mylohyoid ridge

b)

External oblique ridge

c)

Anterior border of the ramus

d)

Submandibular fossa

e)

Coronoid process

26.

What is the dense radiopaque band that extends downward and forward from the anterior border of the ramus of the mandible, indicated by the black arrows?

a)

Mylohyoid ridge

b)

External oblique ridge

c)

Mandibular canal

d)

Submandibular fossa

e)

Genial tubercles

27.

On this bite-wing image, we see a slightly radiopaque vertical band that is posterior to the molar region. What is this anatomic landmark?

a)

Anterior border of the ramus

b)

Submandibular fossa

c)

Coronoid process

d)

External oblique ridge

28.

Which radiolucent anatomic landmark is seen in the mandibular molar region below the mylohyoid ridge, indicated by the white arrows?

a)

Submandibular fossa

b)

Lateral fossa

c)

Mandibular canal

d)

Periodontal ligament space

29.

Which mandibular anatomic landmark shows up in maxillary images as a triangular radiopacity posterior to, or superimposed over, the maxillary tuberosity region?

a)

Coronoid process

b)

Anterior border of the ramus

c)

Mental fossa

d)

Mental ridge

30.

Which tooth structure is indicated by the letter B?

a)

Enamel

b)

Dentin

c)

Dentino-enamel junction

d)

Pulp chamber

31.

Which tooth structure is indicated by the letter C?

a)

Enamel

b)

Dentin

c)

Dentino-enamel junction

d)

Pulp chamber

32.

Which tooth structure shows up on a radiograph as the most radiolucent tooth structure?

a)

Enamel

b)

Dentin

c)

Dentino-enamel junction

d)

Pulp chamber

33.

What is the dense radiopaque line surrounding the root of a tooth, seen in this image, indicated by the white arrows?

a)

Lamina dura

b)

Periodontal ligament space

c)

Alveolar crest

34.

What is the radiolucent line surrounding the root of a tooth, seen in this image, indicated by the white arrows?

a)

Lamina dura

b)

Periodontal ligament space

c)

Alveolar crest

35.

Radiopaque structures appear light or white in a radiographic image.

a)

True

b)

False

36.

Structures that are cavities, depressions or openings in bone such as a sinus, fossa, canal or foramen will allow x-rays to penetrate through them and expose the receptor. These areas will appear radiolucent or black on radiographic images.

a)

True

b)

False

37.

What is making the radiopaque border indicated by the arrows?

a)

Soft tissue of nose

b)

Lip line

c)

Gumline

d)

Maxillary torus

38.

What is making the radiopaque border indicated by the yellow dotted line?

a)

Soft tissue of nose

b)

Lip line

c)

Gumline

d)

Maxillary torus

39.

What is the curved, radiopaque anatomical structure indicated by the yellow arrows?

a)

Sinus septation

b)

Zygoma

c)

Zygomatic process of the temporal bone

d)

Zygomatic process of the maxilla

40.

What is the radiopaque anatomical structure indicated by the pink arrows?

a)

Sinus septation

b)

Zygoma

c)

Zygomatic process of the temporal bone

d)

Zygomatic process of the maxilla

41.

What is the straight, radiopaque line indicated by the black arrow?

a)

Nasal cavity border

b)

Maxillary sinus border

c)

Nasolabial fold

d)

Neurovascular canal

42.

What is the curved, radiopaque line indicated by the white arrow?

a)

Nasal cavity border

b)

Maxillary sinus border

c)

Nasolabial fold

d)

Neurovascular canal

43.

What is the straight, radiopaque border indicated by the white arrows?

a)

Nasal cavity border

b)

Maxillary sinus border

c)

Nasolabial fold

d)

Neurovascular canal

44.

What is the radiolucent region indicated by the arrows?

a)

Periapical cyst

b)

Lateral/ Incisive fossa

c)

Soft tissue of the nose

d)

Incisive foramen

45.

What is the vertical, columnar structure surrounded by cortical bone indicated by the arrows?

a)

Incisive foramen

b)

Nasopalatine canal

c)

Nasal septum

d)

Soft tissue of the nose

46.

Name the two vertical, radiolucent lines extending apical from the roots.

a)

Fracture lines

b)

Maxillary sinus

c)

Sinus septations

d)

Neurovascular (nutrient) canals