Maxillary Anatomy

Question 1

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

Answer 1

Lamina Dura

Question 2

Will the PDL be 100% visible on a developing tooth?

Answer 2

No

Question 3

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

Answer 3

Alveolar crest

Question 4

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

Answer 4

Periodontal ligament space

Question 5

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

Answer 5

cancellous

Question 6

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

Answer 6

Anterior Nasal Spine

Question 7

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

Answer 7

Intermaxillary suture

Question 8

▪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

Answer 8

Nasopalatine canal

Question 9

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

Answer 9

Incisive foramen

Question 10

▪Is located above the oral cavity.

▪Its floor is seen as a thin radiopaque line

Answer 10

Nasal cavity

Question 11

Where will you begin seeing the floor of the maxillary sinus?

Answer 11

Premolars posteriorly

Question 12

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

Answer 12

Maxillary sinus

Question 13

______ are radiolucencies in the maxillary sinus

Answer 13

Neurovascular canals

Question 14

____ is formed by nasal fossa and maxillary sinus

Answer 14

Inverted Y

Question 15

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

Answer 15

nose

Question 16

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.

Answer 16

Lateral fossa

Question 17

▪Runs from the orbit inferiorly to the nasal cavity.

Answer 17

Nasolacrimal Canal

Question 18

The _______ of the maxilla is an extension of the lateral maxillary surface that articulates with the maxillary process of the zygoma

Answer 18

Zygomatic process of maxilla

Question 19

_______ extends posteriorly from the zygomatic process of maxilla

Answer 19

Zygoma

Question 20

______:
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 pm region

Answer 20

Nasolabial fold

Question 21

The _____ and _____ lie immediately posterior to the tuberosity of the maxilla

Answer 21

Medial and Lateral pterygoid plates