Intraoral Radiographic Anatomy

Question 1

Is the cortex bone the inner or outer layer of bone?

Answer 1

Outer, dense

Question 2

Is the cortex bone radiopaque or radiolucent?

Answer 2

Radiopaque

Question 3

What is the lamina dura?

Answer 3

Wall of the tooth socket, surrounds root of the tooth

Question 4

Is the lamina dura radiopaque or radiolucent?

Answer 4

Radiopaque

Question 5

What is the alveolar crest

Answer 5

Most coronal portion of the alveolar bone between the teeth

Question 6

What is continuous with the lamina dura?

Answer 6

Alveolar crest

Question 7

What is the alveolar crest made up of?

Answer 7

Dense cortical bone

Question 8

Is the alveolar crest radiopaque or radiolucent?

Answer 8

Radiopaque

Question 9

Where is the alveolar crest typically located?

Answer 9

1.5 to 2mm below the CEJ

Question 10

What is cancellous bone made up of?

Answer 10

Thin radiopaque rodes and plates called trabeculae

Question 11

What does the cancellous bone surround?

Answer 11

Radiolucent pocket of bone marrow

Question 12

What is the PDL space?

Answer 12

Between tooth root and lamina dura

Question 13

Is the PDL space radiopaque or radiolucent?

Answer 13

Radiolucent

Question 14

When does the primary dentition start to erupt?

Answer 14

6 months old

Question 15

How many teeth are in the primary dentition?

Answer 15

20

Question 16

What is the primary dentition missing?

Answer 16

No premolars or 3rd molar

Question 17

The roots of primary teeth do what in order to accommodate developing permanent teeth?

Answer 17

Flare

Question 18

What is the nasal cavity divided by?

Answer 18

Nasal sept

Question 19

What is the radiolucent tube like passageway near the maxillary sinus?

Answer 19

Neurovascular canal

Question 20

Is the genial tubercles radiopaque or radiolucent?

Answer 20

Radiopaque

Question 21

Is the lingual foramen radiopaque or radiolucent?

Answer 21

Radiolucent