Mandibular Intraoral Anatomy

Question 1

Which is the entrance and exit for the IA?

Answer 1

mandibular foramen - entrance
mental foramen - exit

Question 2

Answer 2

mylohyoid ridge (aka internal oblique ridge)

Question 3

Answer 3

inferior alveolar canal

Question 4

What is the symphysis?

Answer 4

In Infants it is a radiolucent line through the midline of the jaw between the images of the forming deciduous central incisors.

Question 5

What is the radiolucent line through the midline of the jaw between the images of the forming deciduous central incisors in infants?

Answer 5

symphysis

Question 6

Answer 6

symphysis

Question 7

Answer 7

mandibular symphysis

Question 8

What are the genial tubercles?

Answer 8

They are bony protuberances located on the lingual surface of the mandible slightly above the inferior border and in the midline.

Question 9

Answer 9

genial tubercles

Question 10

What are the bony protuberances located on the lingual surface of the mandible slightly above the inferior border and in the midline?

Answer 10

genial tubercles

Question 11

Answer 11

genial tubercles

Question 12

Answer 12

genial tubercles

Question 13

Answer 13

genial tubercles

Question 14

Answer 14

genial tubercles

Question 15

Answer 15

genial tubercles

Question 16

What is the lingual foramen?

Answer 16

A foramen on the lingual surface of the midline of the mandible in the region of the genial tubercles.

Question 17

What is the foramen on the lingual surface of the midline of the mandible in the region of the genial tubercles?

Answer 17

lingual foramen

Question 18

What usually goes through the lingual foramen?

Answer 18

sublingual artery

Question 19

Answer 19

lingual foramen

Question 20

Answer 20

lingual foramen

Question 21

Answer 21

lingual foramen

Question 22

Answer 22

lingual foramen

Question 23

What is the mental ridge?

Answer 23

On periapical radiographs of the mandibular central incisors, the mental ridge may occasionally be seen as two radiopaque lines sweeping bilaterally forward and upward toward the midline.

Question 24

Answer 24

mental ridge

Question 25

Answer 25

mental ridge

Question 26

Answer 26

mental ridge

Question 27

Answer 27

mental ridge

Question 28

What are mental fossa?

Answer 28

The mental fossa is a depression on the labial aspect of the mandible extending laterally from the midline and above the mental ridge.

Question 29

Answer 29

mental fossa

Question 30

The mental fossa is a depression on the anterior surface of the mandible and is seen as a __________ area with ____-defined borders (arrows) in the region of the incisor roots.

Answer 30

radiolucent ill-defined

Question 31

Answer 31

mental fossa

Question 32

Answer 32

mental fossa

Question 33

What is the mental foramen?

Answer 33

The mental foramen is usually the anterior limit of the inferior dental canal.

Question 34

Answer 34

mental foramen

Question 35

Answer 35

mental foramen

Question 36

Answer 36

mental foramen

Question 37

Answer 37

mental foramen

Question 38

Answer 38

mental foramen

Question 39

Answer 39

mental foramen

Question 40

Answer 40

mental foramen

Question 41

What is the mandibular canal?

Answer 41

The radiographic image of the mandibular canal is a dark linear shadow with thin radiopaque superior and inferior borders.

Question 42

Answer 42

mandibular canal

Question 43

Answer 43

mandibular canal

Question 44

Answer 44

mandibular canal

Question 45

Answer 45

mandibular canal

Question 46

Answer 46

mandibular canal

Question 47

Answer 47

mandibular canal

Question 48

Answer 48

mandibular canal

Question 49

What are nutrient canals?

Answer 49

Nutrient canals carry a neurovascular bundle and appear as radiolucent lines of fairly uniform width.

Question 50

Answer 50

nutrient canals

Question 51

Answer 51

nutrient canals

Question 52

Nutrient canals seen as vertical __________ structures

Answer 52

radiolucent

Question 53

Answer 53

nutrient canals

Question 54

Answer 54

nutrient canals

Question 55

What is the internal oblique ridge?

Answer 55

▪ The mylohyoid ridge is a slightly irregular crest of bone on the lingual surface of the mandibular body. ▪ Also called mylohyoid ridge

Question 56

Answer 56

internal oblique ridge (or mylohyoid rigde)

Question 57

Answer 57

mylohyoid ridge (or internal oblique ridge)

Question 58

Answer 58

mylohyoid ridge (or internal oblique ridge)

Question 59

Mylohyoid ridge (arrows) running at the level of the _____ apices and above the mandibular canal.

Answer 59

molar

Question 60

Answer 60

external oblique ridge

Question 61

Answer 61

internal oblique ridge - mylohyoid ridge

Question 62

Answer 62

external oblique ridge

Question 63

What is the submandibular gland fossa?

Answer 63

Is a depression of the bone on the lingual surface of the mandibular body, immediately below the internal oblique ridge in the molar area.

Question 64

Answer 64

submandibular gland fossa

Question 65

Submandibular gland fossa (arrows), indicated by a radiolucent region with ill-defined borders and sparse trabecular bone lying inferiorly to the...

Answer 65

mandibular molars

Question 66

Answer 66

submandibular gland fossa

Question 67

What is the external oblique ridge?

Answer 67

Is a continuation of the anterior border of the mandibular ramus.

Question 68

Answer 68

external oblique ridge

Question 69

External oblique ridge (arrows) on the buccal surface of the mandible, seen as a radiopaque line near the alveolar crest in the ____________________ region

Answer 69

mandibular third molar

Question 70

Answer 70

external oblique ridge

Question 71

Answer 71

external oblique ridge

Question 72

Answer 72

external oblique ridge

Question 73

Answer 73

external oblique ridge

Question 74

What is the inferior border of the mandible?

Answer 74

Occasionally, the inferior mandibular border is seen on periapical projections as a characteristically dense, broad radiopaque band of bone.

Question 75

Answer 75

inferior border of the mandible

Question 76

The inferior border of the mandible (arrows) is seen as a dense, broad __________ band

Answer 76

radiopaque

Question 77

Answer 77

inferior border of the mandible

Question 78

Answer 78

inferior border of the mandible

Question 79

Answer 79

inferior border of the mandible

Question 80

What is the coronoid process?

Answer 80

The image of the coronoid process is triangular radiopacity, with its apex directed superiorly and anteriorly, superimposed on the region of the third molar.

Question 81

Answer 81

coronoid process of the mandible

Question 82

Coronoid process of the mandible is often superimposed on the...

Answer 82

maxillary tuberosity

Question 83

Answer 83

coronoid process

Question 84

What are mandibular tori?

Answer 84

▪ Bony outgrowths on the lingual surface of the mandible ▪Often bilateral and symmetrical

Question 85

Answer 85

mandibular tori

Question 86

Answer 86

mandibular tori

Question 87

Answer 87

mandibular tori