intraoral anatomy- maxillary

Question 1

the teeth sockets are bounded by a thin radiopague layer of dense bone

Answer 1

lamina dura

Question 2

if tooth is gone, do we still have lamina dura

Answer 2

no (because reacts on stimulus)

Question 3

space between cementum and lamina dura

Answer 3

PDL space

Question 4

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

Answer 4

alveolar crest

Question 5

radipaque highest to lowest of tooth

Answer 5

enamel>dentin

Question 6

mm from alveolar crest to CEJ

Answer 6

1-2mm

Question 7

it appears as radiolucent space between tooth root and the lamina dura

Answer 7

periodontal ligament space

Question 8

double peridontal ligament and lamina dura may be seen when there is a

Answer 8

convexity(concavities) of the proximal surface of the root resulting in two heights of contour

or could be another root we dk

Question 9

the cancellous bone lies between the cortical plates in both jaws

Answer 9

cancellous or trabecular bone

Question 10

inbetween trabecular bone we have

Answer 10

marrow spaces

Question 11

usually at or just below the junction of the inferior end of the nasal septum and the inferior outline of the nasal aperture

Answer 11

anterior nasal spine

Question 12

-median suture
-uniform width
-variable shape (angulation of centray ray)

Answer 12

intermaxillary suture

Question 13

where does intermaxillary suture extend from

Answer 13

from alveolar crest between 8 and 9 posteriorly to distal aspect of hard palate

Question 14

intermaxillary suture radiopaque or lucent?

Answer 14

radiolucent

Question 15

-transmits nasopalatine nerves and vessels

Answer 15

nasopalatine canal

Question 16

connects nasal cavity to oral cavity

Answer 16

nasopalatine canal

Question 17

the nasopalatine canal terminates in

Answer 17

incisive formaen

Question 18

enterance foramina for nasapalatine canal

Answer 18

two usually round or oval foramen in the floor of the nasal cavity
-not always seen

Question 19

the superior foramina of the nasopalatine canal appear just lateral to the :
and posterior to:

Answer 19

nasal septum (divides the two foramens)

anterior nasal spine

Question 20

the lateral walls of the nasopalatine canal extend from the ____ to the _____

Answer 20

incisive foramen to the floor of the nasal fossa

Question 21

is the oral end of the nasopalatine canal
-variable size and shape and position due to xray beam angulation

Answer 21

incisive foramen

Question 22

located above the oral cavity
-its floor is seen as a thin radiopaque line
v shape

Answer 22

nasal cavity

Question 23

the floor of the nasal aperture extends posteriorly, superimposed over the

Answer 23

max sinus

Question 24

straight line:
bump line:

Answer 24

straight line: floor of nasal cavity
bump line: sinus

Question 25

where sinus and floor of nasal cavity meet (around level of premolars)

Answer 25

inverted Y nota actual anatomical definition

Question 26

-air-containing cavity lined with mucous membrane -borders appear in peri-apical radiographs as a thin and radiopaque -may have internal septa -wavey borders!!!! NOT straight

Answer 26

maxillary sinus

Question 27

the inferior border of the max sinus apepars as a thin radiopaque line near the

Answer 27

apices of the max premolars and molars

Question 28

formed by nasal fossa and max sinus

Answer 28

inverted Y (most of time at level of premolars)

Question 29

soft tissue of tip of nose can be seen in projections of the max incisors, superimposed over the roots

Answer 29

nose

Question 30

depression in maxilla near the apex of the lateral incisor

Answer 30

lateral fossa

Question 31

this is formed by a depression in the maxilla at this location

Answer 31

lateral fossa

Question 32

runs from the orbit inferiorly to the nasal cavity

Answer 32

nasolacrimal canal (drains tears to nose)

Question 33

this is occasionally seen near the apex of the canine when steep vertical angulation is used commonly seen as ovoid radiolucencies on maxillary occlusal projections

Answer 33

nasolacrimal canal

Question 34

in maxilla, is an extension of the lateral maxillary surface that articulates with the maxillary process of the zygoma radiopaque

Answer 34

zygomatic process of the maxilla

Question 35

protrudes laterally from maxillary wall. its size may be quite variable: small with thick borders or large with thin borders

Answer 35

zygomatic process of maxilla

Question 36

radiographically is an oblique line demarcating a region that appears to be covered by a veil of slight radiopacity

Answer 36

nasolabial fold

Question 37

frequently traverses periapical radiographs of the premolar region

Answer 37

nasolabial fold

Question 38

these lie immediately posterior to the tuberosity of the maxilla

Answer 38

the medial and lateral pterygoid plates (hamular notch is noted) (part of sphenoid bone)