5 - Mandibular Growth

Question 1

You get mandibular processes from which branchial arch?

Answer 1

1st arch

Question 2

What kind of cartilage is Meckel’s cartilage?

Answer 2

Hyaline cartilage

Question 3

In what arch is meckel’s/hyaline cartilage formed?

Answer 3

1st arch

Question 4

The mandibular alveolar process shows significant _______ development

Answer 4

Vertical

Question 5

(T/F) The mandibular alveolar process is NOT tied to dental eruption

Answer 5

False

Question 6

Where does the mandibular alveolar process take place?

Answer 6

Above mandibular canal

Question 7

Mandibular growth has what 3 kinds of growths?

Answer 7

1. Cartilage growth
2. Alveolar growth
3. Bone apposition and resorption

Question 8

How is mandibular growth remodeled?

Answer 8

By bone apposition and resorption

Question 9

describe the mandibular alveolar process

Answer 9

tied to tooth eruption
shows significant vertical development
above the mandibular canal

Question 10

Permanent teeth do what to primary teeth after eruption?

Answer 10

Resorb primary teeth

Question 11

How was the mandibular growth pattern confirmed?

Answer 11

Implant technique

Question 12

Growth in length of the mandible essentially occurs at the

Answer 12

Condyles

Question 13

describe the mandibular growth pattern (Bjork)

Answer 13

confirmed by implant techinque, vertical growth by condyles

Question 14

Is there a strong or weak correlation of the size of the mandible at 12 and at the final size?

Answer 14

Weak correlation because there is too much variation

Question 15

Elongation of the mandible occurs how?

Answer 15

Apposition and displacement

Question 16

In the mandible, apposition does what?

Answer 16

Adds bone to the posterior part of the mandible

Question 17

In the mandible, displacement does what?

Answer 17

Removes bone from the anterior part of the mandible

Question 18

In the mandible, is the A/D ratio 1?

Answer 18

No, >1

Question 19

Why is the A/D ratio greater than >1?

Answer 19

More apposition than displacement

Question 20

The mandible “catches up” to the maxilla as it starts as

Answer 20

Retrognathic at birth

Question 21

What growth patterns does the ramus of the mandible have?

Answer 21

Vertical growth
Transverse growth

Question 22

In what principle does the mandible grow?

Answer 22

V of enlow

Question 23

Vertical growth of the mandible is the result of the vertical displacement of the

Answer 23

Maxilla

Question 24

Vertical growth of the mandible and the vertical displacement of the maxilla must occur

Answer 24

At the same time
Timed with tooth eruption

Question 25

the vertical and transverse growth of the ramus occurs in what way?

Answer 25

v of enlow

Question 26

What is the regional field of growth in the mandible?

Answer 26

Condyles

Question 27

Mandibular condyles are growth sites or centers?

Answer 27

Growth sites

Question 28

Tension on the condyles cause what?

Answer 28

Increased growth

Question 29

Compression on the condyles cause what?

Answer 29

Decreased growth

Question 30

Is endochondral growth present in the condyles?

Answer 30

Yes

Question 31

Where is endochondral growth in the condyles?

Answer 31

Only at the articular surface of the condyle

Question 32

Why is endochondral growth only at the articular surface of the condyle?

Answer 32

Because of compressive load