Mandible , TMJ

Question 1

_____ is the largest and denset bone of the face.

Answer 1

Mandible

Question 2

What does the mandible consists of:

1. ____
2. ___

Answer 2

1. 1. curved horizontal portion= Body

2. 2 vertical portions = rami

Question 3

At birth the mandible consists of bilateral piecies held together by ______, that ossifies during the _____ year of life.

Answer 3

1. fibrous symphysis

2. 1st year of life

Question 4

_____ is located at the site of ossification and is a triangular prominence

Answer 4

mental protuberance

Question 5

____ is the most anterior and central part of the mandible

Answer 5

symphysis

Question 6

____ is where the left and right halves of mandible are fused

Answer 6

symphysis

Question 7

The superior boarder of the body of the mandible consist of spongy bone called the ______.

Answer 7

Alveolar process

Question 8

Each ramus presents 2 process at its upper extremity

1. ____
2. ___

Answer 8

1. Coronoid process ( anterior)

2. Condylar process ( posterior)

Question 9

The 2 process of the rami are separated by a concave area called _____.

Answer 9

mandibular notch

Question 10

______ articulates with mandibular fossa of the temporal bone

Answer 10

condylar process

Question 11

The TMJ is situated immediately in front of the _____.

Answer 11

EAM

Question 12

_____ is a small U-shaped structure. It is situated at the base of ____. It is an ______ bone of the axial skeleton

Answer 12

1.Hyoid bone
2. Base of tongue
3 Accessory

Question 13

The ______ is the only bone of the body that does not articulate with any other bone

Answer 13

hypoid bone

Question 14

What does the hyoid bone consists of:

Answer 14

1. body
2. 2 greater cornua
3. 2 Lesser cornua

Question 15

Why is there not a lateral projection of the mandible

Answer 15

because both halves of the mandible would superimpose each other obscuring information from both sides.

Question 16

What makes up the condylar process

Answer 16

condyle
&
neck

Question 17

For an axiolateral projection of the mandible , the head in true lateral position best demonstrates the ______

Answer 17

ramus

Question 18

for an axiolateral oblique projection of the mandible , the head in 30degree rotation toward IR best demonstrates the _____

Answer 18

body

Question 19

for an axiolateral oblique projection of the mandible , the head in 45degree rotation best demonstrates the _____

Answer 19

mentum / symphysis

Question 20

For an axiolateral oblique projection ____ degree to ____degree rotation best provides a general survey of mandible.

Answer 20

10 to 15 degree rotation

Question 21

Position for a PA Mandible

Rami

Answer 21

check series notes

*exits acanthion

Question 22

Position for a PA Axial Mandible ( Rami)

Answer 22

• 20-25 degree cephalad

* Exits acanthion

Question 23

Position for an Axiolateral Mandibe

Answer 23

*Ramus: True lateral position

• 25 degree cephalad
• CR exits mandibular region of interest

Question 24

Position for an Axiolateral Oblique: Body of mandible

Answer 24

• 25 degree cephalad

* MSP is 30 degrees towards IR

Question 25

Position for an Axiolateral Oblique : | Sympysis /mentum

Answer 25

* 25 degree cephalad | * MSP= 45 degree towards IR

Question 26

In the ____ projection of the mandible , the C-spine will over lap the body

Answer 26

Axiolateral oblique projection of the sympysis / mentum * should not overlap in the axioloateral ramus or axiolateral oblique of the body

Question 27

_____ is a A semi-circular tomographic image of the mandible

Answer 27

panorex

Question 28

Position for a AP Axial TMJ

Answer 28

Town's method * CR= 35 degree caudad OML or 42 degree IOML *CR enters the Glabella & MSP or 3" above nasion ( CR needs to skim TMJ)

Question 29

What is the difference between the open mouth and closed mouth AP Axial TMJ

Answer 29

Open mouth: Condyle and TMJ are Below pars petrosa

Question 30

As you open your mouth the condyles are _____ from mandibular fossa

Answer 30

pulled out | = Inferior to the articular tubercle

Question 31

Where are the condyles during a closed mouth examination

Answer 31

In the mandibular fossa

Question 32

Shuller method is the method name for which projection

Answer 32

Axiolateral TMJ

Question 33

Position for an Axiolateral TMJ | Name the method

Answer 33

``` AKA Schuller method 10 x 12" CW IR *25-30 degree caudad *CR enters 2" superior and 1/2" anterior to EAM *CR exits TMJ of interest *Head in true lateral position IPL = perpendicular MSP=// ```

Question 34

_____ is the method name for Axiolateral Oblique of TMJ

Answer 34

Modified Law method

Question 35

Position for Modified Law method * What lines are of interest ?

Answer 35

*Axiolateral Oblique TMJ * Double 15's ( MSP and Tube angle) - MSP 15 degrees towards IR - CR =15 degree caudad * CR enters: 1 1/2" above EAM * CR Exits TMJ of profile * AML = // with transverse axis of IR

Question 36

______ extends posteriorly to join _____ of temporal bone

Answer 36

1. Temporal process | 2. zygomatic process

Question 37

What forms the zygomatic arch

Answer 37

union of the temporal process of zygoma and zygomatic process of temporal bone

Question 38

SMV stands for

Answer 38

Submentovertical

Question 39

Position for a SMV of Zygomatic arches

Answer 39

* CR enters Perpendicular to IOML | * Enters MSP of throat @ level 1 " posterior to outer canthus

Question 40

Position for Tangential Zygomatic Arch

Answer 40

* Rotate MSP of head 15 degree toward side being examined * tilt top of head 15 degree from side being examined * CR centered to z-arch at a point 1" posterior to outer canthus

Question 41

What is the method name for an AP axial Zygomatic arches

Answer 41

Modified Towne's method

Question 42

Position for a modified Towne's method

Answer 42

* AP Axial Zygotmatic arches * CR enters glabella & MSP or 1" above nasion CR = 30 degrees caudad OML is perpendicular