Mandible, Orbits, and Sinuses Flashcards Preview

spring 2015 > Mandible, Orbits, and Sinuses > Flashcards

Flashcards in Mandible, Orbits, and Sinuses Deck (77):
0

What is the largest moveable bone of the face

Mandible

1

The curved horizontal portion of the mandible is the

Body

2

The vertical portion of the mandible is the

Rami

3

The junction of the body and the ramus is the

Angle of mandible/gonion

4

The bump on the tip of the chin is termed the

Mental protuberance

5

The junction of the right and left halves of the mandible is the

Symphysis

6

The roots of the teeth are supports by this

Alveolar process

7

Nerves and blood vessels travel through this hole located on each side of the body of the mandible

Mental foramina

8

The anterior portion of the ramus is the

Coronoid process

9

The posterior portion of the ramus that articulates with the mandibular fossa is called the

Condylar process

10

Where is the mandibular notch located

Top of ramus between coronoid and condylar process

11

How many sinuses are there

4

12

What is within the normal sinus

Air

13

What are the 3 functions of the sinuses

⚫️warm and moisten inhaled air
◾️decrease weight of skull
⚫️provide resonating chamber for voice

14

These sinuses are cloud shaped and located over the midline

Frontal sinuses

15

The largest sinuses are the

Maxillary

16

The 2nd largest sinuses are the

Frontal

17

Which sinuses are located between the orbits

Ethmoid

18

These sinuses are triangular shaped

Maxillary

19

The maxillary sinuses are located on either side of the

Nose

20

The sphenoid sinuses are directly under the

Sella turcia

21

On a PA Mandible what touches the grid

Forehead and nose

22

On a PA Mandible OML is?

Perpendicular

23

On a PA Mandible MSP is?

Perpendicular

24

On a PA Mandible CR is?

Perpendicular; exit acanthion

25

On a PA Mandible what does this view demonstrate?

◾️mandibular rami and body
◾️must see entire mandible

26

On PA axial mandible what touches the grid?

Forehead and nose

27

On PA axial mandible what type of fractures it demonstrates?

Medial or lateral displacement of fragments in fractures of rami

28

On PA axial mandible OML is?

Perpendicular

29

On PA axial mandible MSP is?

Perpendicular

30

On PA axial mandible CR is?

20-25 cephalic; exits acanthion

31

On PA axial mandible can you see the mandibular condyles?

Yes

32

On the axiolateral oblique mandible what anatomic piece is parallel to IR?

Desired portion of mandible

33

On the axiolateral oblique mandible CR is?

20-25 cephalic enter 2" distal gonion of upside.
Exits down mandibular body

34

•Ramus and body
•No overlap of ramus by opposite side of mandible
•No elongation or foreshortening of ramus or body
•No superimposition of ramus by C-spine
•Symphysis
•No overlap of mentum region by opposite side of mandible
•No foreshortening of mentum region

On the axiolateral oblique mandible what is demonstrated?

35

On the axiolateral oblique mandible when doing the semi supine projection, what is your tube angle? What is the angle of the sponge used?

Tube 20-25 cephalic
Sponge 15-20

36

On the axiolateral oblique mandible done TT or Bucky when pt is semi supine?

TT

37

On the axiolateral oblique mandible you need to make sure what other body part does not superimpose the mandible

Cervical spine

38

In axiolateral oblique TMJS where to center IR?

1/2 inch anterior to EAM

39

In axiolateral oblique TMJS CR is?

25-30 caudal entering 1/2 anterior and 2 inch superior to upside EAM
Exits through TMJ closer to IR

40

In axiolateral oblique TMJS which side is against the IR?

Cheek- affected Side

41

•Demonstrates condyles and neck of mandible
•Both sides done for comparison
•Must see TMJ’s
•Condyle lying in mandibular fossa in closed-mouth position
•Condyle lying inferior to articular tubercle in open-mouth position, if normal

In axiolateral oblique TMJS what is demonstrated?

42

In axiolateral oblique TMJS MSP is

Parallel

43

In axiolateral oblique TMJS IPL is

Perpendicular

44

In AP axial TMJS what touches the IR?

Posterior skull

45

In AP axial TMJS demonstrates what?

Condyles if mandible and mandibular fossa of temporal bone

46

In AP axial TMJS OML is?

Perpendicular

47

In AP axial TMJS MSP is?

Perpendicular

48

In AP axial TMJS CR is?

35 caudal midway between TMJS 3 inches above nasion

49

In AP axial TMJS 2 exposures are made, what are they?

Open and closed mouth

50

In axiolateral oblique TMJS (law method) what are the differences from the other axiolateral oblique TMJ method?

On law you tilt MSP 15 degrees toward the IR and make AML parallel with the transverse axis of the IR

51

In axiolateral oblique TMJS (law method) the CR is

15 degree caudal exiting the TMJ closest to the IR. Enters 1/2 superior to the upside EAM

52

•The images in the open-mouth and closed-mouth positions show the condyles and necks of the mandible.
•The images show the relationship between the mandibular fossa and the condyle.
•The open-mouth position shows the mandibular fossa and the condyle.
•Both sides are examined for comparison.
• The closed-mouth position shows fractures of the neck and condyle of the ramus.

In axiolateral oblique TMJS (law method) demonstrates what?

53

In lateral sinuses IPL is

Perpendicular

54

In lateral sinuses MSP is

Parallel

55

In lateral sinuses IOML is

Parallel to transverse plane of IR

56

In lateral sinuses CR is

Perpendicular; 1/2-1 inch posterior to outer canthus

57

In lateral sinuses which sinuses are demonstrated?

All 4

58

In lateral sinuses what sinus is most posterior on image?

Sphenoid

59

In lateral sinuses how do orbital roofs and mandibular rami appear?

superimposed

60

In PA axial (Caldwell) what parts are touching the IR

Nose and forehead

61

In PA axial (Caldwell) OML is

Perpendicular

62

In PA axial (Caldwell) CR is

15 caudal exits nasion

63

In PA axial (Caldwell) what sinus is best demonstrated

Frontal sinuses

64

In PA axial (Caldwell) what other sinus is demonstrated

Ethmoid sinus

65

In PA axial (Caldwell) where are the petrous ridges?

Lower third of orbits

66

In the pareitoacanthial waters sinuses what part is touching the IR

Chin

67

In the pareitoacanthial waters sinuses OML is

37 degree angle

68

In the pareitoacanthial waters sinuses MML is

Perpendicular

69

In the pareitoacanthial waters sinuses CR is

Exits acanthion

70

In the pareitoacanthial waters sinuses the petrous ridges are located where?

Below the floor of the maxillary sinus

71

In the pareitoacanthial waters sinuses what sinus is best demonstrated?

Maxillary sinus

72

Paretoorbital oblique Rhese Orbit which parts are touching the grid

Nose, cheek, chin

73

Paretoorbital oblique Rhese Orbit AML is

Perpendicular

74

Paretoorbital oblique Rhese Orbit rotate head so the MSP is

53 degrees to the plane of IR

75

Paretoorbital oblique Rhese Orbit the CR is

Perpendicular; and exits orbit closest to IR

76

Paretoorbital oblique Rhese Orbit demonstrates

⚫️Optic foramen in lower outer quadrant of the orbit
⚫️demonstrates superior and lateral orbital margins