maxillary anatomy

Question 1

Lamina Dura

Answer 1

The teeth sockets are
bounded by a thin
radiopaque layer of dense
bone.

Question 2

Answer 2

lamina dura

Question 3

Alveolar Crest

Answer 3

Is the gingival margin of the alveolar
process between teeth (radiopaque
line).

Question 4

Answer 4

alveolar crest

Question 5

Answer 5

alveolar crest

Question 6

Periodontal Ligament Space

Answer 6

It appears as a radiolucent space
between the tooth root and the
lamina dura

Question 7

Answer 7

PDL space

Question 8

A double periodontal ligament space and lamina dura (arrows) may be seen when?

Answer 8

when there is a convexity of the proximal surface of the root resulting in two heights of contour.

Question 9

Cancellous or trabecular Bone

Answer 9

The cancellous bone lies between the cortical
plates in both jaws.

Question 10

Answer 10

trabecular plates

Question 11

Answer 11

marrow spaces

Question 12

Anterior Nasal Spine

Answer 12

Anterior Nasal Spine
It is usually at or just below the
junction of the inferior end of the
nasal septum and the inferior
outline of the nasal aperture.

Question 13

Answer 13

ant nasal spine

Question 14

Answer 14

ant nasal spine

Question 15

Intermaxillary Suture

Answer 15

▪Median suture
▪Extends from alveolar crest between #8 and #9 posteriorly to distal aspect of hard palate
▪Uniform width
▪Variable shape due to Angulation of central ray

Question 16

Answer 16

intermaxillary suture

Question 17

Answer 17

intermaxillary suture

Question 18

Nasopalatine canal

Answer 18

▪Transmits nasopalatine nerves and vessels
▪Terminates in incisive foramen
▪Entrance foramina: two usually round or oval foramina in
the floor of the nasal cavity.
▪Not always seen

Question 19

nasopalatine canal anatomy

Answer 19

Question 20

Answer 20

stensen foramen of NP canal

Question 21

green arrows

Answer 21

stensen foramen

Question 22

Incisive Foramen

Answer 22

Incisive Foramen
▪Is the oral end of the nasopalatine canal
▪Variable size and shape
▪Variable position, due to x-ray beam angulation

Question 23

Answer 23

incisive foramen

Question 24

Answer 24

incisive foramen

Question 25

Nasal cavity

Answer 25

▪Is located above the oral cavity. ▪Its floor is seen as a thin radiopaque line

Question 26

Answer 26

nasal cavity

Question 27

Answer 27

nasal cavity

Question 28

# lateral? posterior? extensions of the nasal cavity

Answer 28

Floor of the nasal cavityextending laterally from the anterior nasal spine. The floor of the nasal aperture (arrows) extends posteriorly, superimposed over the maxillary sinus.

Question 29

Answer 29

inf nasal concha

Question 30

Answer 30

nasal septum

Question 31

MAXILLARY SINUS

Answer 31

MAXILLARY SINUS ▪Is an air-containing cavity lined with mucous membrane. ▪The borders appear in periapical radiographs as a thin and radiopaque line near apices ▪May have internal septa

Question 32

Answer 32

inf border of max sinus

Question 33

mx sinus response to missing teeth

Answer 33

The floor of the maxillary sinus (arrows) often extends toward the crest of the alveolar ridge in response to missing teeth

Question 34

Answer 34

max sinus with missing teeth

Question 35

Answer 35

septum in max sinus

Question 36

Answer 36

neurovascular canals in the wall of the max sinus

Question 37

Answer 37

neurovascular canals in the wall of the max sinus

Question 38

What is the "Inverted Y"?

Answer 38

Formed by nasal fossa and maxillary sinus

Question 39

Answer 39

inverted Y max sinus and nasal fossa

Question 40

Nose in radiographs

Answer 40

▪The soft tissue of the tip of the nose can be seen in projections of the maxillary incisors, superimposed over the roots.

Question 41

Answer 41

nose soft tissue

Question 42

Lateral Fossa

Answer 42

Lateral Fossa ▪Is a depression in the maxilla near the apex of the lateral incisor. ▪It is formed by a depression in the maxilla at this location. The lateral fossa is a diffuse radiolucency in the region of the lateral incisor.

Question 43

Answer 43

lateral fossa

Question 44

Answer 44

lateral fossa

Question 45

Nasolacrimal Canal

Answer 45

▪Runs from the orbit inferiorly to the nasal cavity. Occasionally seen near the apex of the canine when steep vertical angulation is used. The nasolacrimal canals are commonly seen as ovoid radiolucencies on maxillary occlusal projections.

Question 46

Answer 46

NL canal

Question 47

Answer 47

NL canal

Question 48

ZYGOMATIC PROCESS OF THE MAXILLA

Answer 48

▪The zygomatic process of the maxilla is anextension of the lateral maxillary surface that articulates with the maxillary process of the zygoma.

Question 49

Answer 49

zygomatic process

Question 50

Answer 50

zygomatic process

Question 51

Answer 51

zygoma

Question 52

NASOLABIAL FOLD

Answer 52

▪Radiographically is an oblique line demarcating a region that appears to be covered by a veil of slight radiopacity. ▪Frequently traverses periapical radiographs of the premolar region. The nasolabial soft tissue fold extends across the canine-premolar region.

Question 53

Answer 53

Nasolabial fold

Question 54

# distal area

Answer 54

tuberosity

Question 55

Pterygoid Plates and Hamular notch

Answer 55

▪The medial and lateral pterygoid plates lie immediately posterior to the tuberosity of the maxilla.

Question 56

Answer 56

hamular process

Question 57

Answer 57

pterygoid plates posterior to tuberosity

Question 58

Answer 58

hamular process