Final; Intraoral Radiographic Anatomy

Question 1

This is located palatal to incisors, pear-shaped opening; nasopalatine nerves and vessels

Answer 1

incisive foramen

Question 2

Answer 2

incisive foramen

Question 3

This leads to the incisive foramen; radioopaque margins, radiolucent center

Answer 3

incisive canal

Question 4

This is a palatal radiolucent line between two processes running posteriorly from alveolar crest

Answer 4

median palatine suture

Question 5

Answer 5

median palatine suture

Question 6

This is a “V” shaped projection present in midline apical and central incisors; radiopaque

Answer 6

anterior nasal spine

Question 7

Answer 7

anterior nasal spine

Question 8

Answer 8

nasal cavities

Question 9

Answer 9

alar cartilage

Question 10

This appears more radiolucent than surrounding bone; adjacent to border of nasal bone

Answer 10

canine fossa

Question 11

This is an air-containing cavity in maxilla, margins are made by a thin layer of dense bone

Answer 11

maxillary sinus

Question 12

The anterior border of the maxillary sinus often intersects a line formed by what

Answer 12

floor of nasal fossa

Question 13

Answer 13

maxillary sinus involving roots of maxillary premolars and molars

Question 14

This cheek bone extends laterally from maxilla over the roots of maxillary posterior tooth

Answer 14

zygomatic arch

Question 15

Answer 15

zygomatic bone

Question 16

This is an important landmark in determining the posterior boundary of upper denture; marks the posterior limit for molar periapical image receptor placement

Answer 16

maxillary tuberosity

Question 17

This is a hook-like process arising from the inferior tip of the medial pterygoid plate

Answer 17

pterygoid hamulus

Question 18

This is the insertion point for temporalis and masseter muscles, form anterior boundary of mandibular or sigmoid notch; often overlaps maxillary tuberosity; area appears radiopaque

Answer 18

coronoid process of mandible

Question 19

Answer 19

coronoid process

Question 20

Answer 20

inferior border of the mandible

Question 21

Answer 21

lower lip line

Question 22

Answer 22

soft tissue of chin; depression from lower lip to superior chin

Question 23

radiolucent area overlying mandibular incisors

Answer 23

labial depression

Question 24

This allows for passage of arteries branching from sublingual artery

Answer 24

lingual foramen

Question 25

These are also called mental spines, located on lingual surface of the body of the mandible at the midline

Answer 25

genial tubercles

Question 26

This is located between first and second premolars, allowing passage of mental vessels and nerves

Answer 26

mental foramen

Question 27

Answer 27

mental foramen

Question 28

Which one of these is the mental foramen, and which is a lesion

Answer 28

white arrows = mental foramen

black arrows = lesion (can see it in the crown of #19)

Question 29

Answer 29

external oblique ridge

Question 30

This extends obliquely upwards along medial surface of anterior border of ramus

Answer 30

mylohyoid ridge; internal oblique ridge

Question 31

appears as a narrow, dark ribbon between two white lines apical to posterior teeth

Answer 31

mandibular canal

Question 32

Thin depression along the medial surface of mandible below mylohyoid ridge

Answer 32

submandibular (gland) fossa

Question 33

Show as radiopacity on posterior periapicals

Answer 33

palatal torus

Question 34

occurs in pairs

Answer 34

mandibular tori