Growth and Facial development

Question 1

Replacement of the cartilage matrix by an osseous matrix

Answer 1

Indirect growth

Question 2

• Long bones growth pattern

* Involves growth centers or growth plates

Answer 2

Indirect growth

Question 3

• Where the cartilage matrix is replaced by immature bone

* Genetically programmed

Answer 3

Growth plates

Question 4

• A bony structure will be displaced during growth.
• In order to preserve the shape, parts of the bone will receive new bone and parts will resorb.
• Placing a V on a growing osseous structure will determine the direction of growth
• The V is placed on the growth surface. Apposition surfaces are in the center of the V while resorbing surfaces are located outside the V

Answer 4

V principle of Enlow

Question 5

What is the only endochondral bone growth in the face?

Answer 5

Cranial base

Question 6

______: allows volume increase and displacement in space while maintaining the proper shape

Answer 6

Drift principle

Question 7

•The bone formation occurs directly in a vascularized mesenchyme.

Answer 7

Intramembranous ossification

Question 8

New bone forms on the _____ aspect of the bone while bone is resorbed on the _____ aspect

Answer 8

external; internal

Question 9

Intramembranous growth will result in _____ of other structures in space

Answer 9

displacement

Question 10

• Bone apposition at the level of the sutures, resulting in an increase of the size of the bone.
• Cranial growth and maxillary growth
• Not mandibular growth

Answer 10

Sutural growth

Question 11

• Until the age of 7: mainly sutural growth
• Once the eye and brain growth completed:–Bony apposition in the tuberosity area and dentoalveolar growth (displacement)
• At this stage, the maxilla is moving away from cranial base

Answer 11

Maxillary growth

Question 12

Sutures stop growing at ____ years of age

Answer 12

8 yrs

Question 13

Maxillary growth grow mainly via what 2 forms of growth?

Answer 13

Appositional and sutural growth

Question 14

T/F: The anterior aspect of the maxilla is actually resorptive

Answer 14

True

Question 15

T/F: Once sutural growth completed (around 10 years old), antero-posterior growth is the result of growth in the tuberosity region

Answer 15

True

Question 16

_____: manipulate the growth here but can’t actually grow as much bone as growth center

Answer 16

Growth site

Question 17

______: tension placed on the suture results in bone apposition ( Rapid palatal expansion)

Answer 17

Sutural growth

Question 18

Dentoalveolar by using teeth as ______

1.Extrusion of teeth will result in bony apposition

Answer 18

distractors

Question 19

What are the 2 modes of growth enhancement of the maxilla?

Answer 19

Sutural growth

Dentoalveolar

Question 20

Are condyles genetically programmed or do they respond to environment dramatically?

Answer 20

Both

Question 21

Are condyle growth sites or centers?

Answer 21

Sites

Question 22

The growth of the posterior segments is responsible for the displacement of the mandible.

Answer 22

posterior

Question 23

The growth of the posterior segments is responsible for the _____ of the mandible.

Answer 23

displacement

Question 24

The _____ must grow vertically to adjust to maxillary growth and maintain rest position

Answer 24

ramus

Question 25

The ramus must grow ______ to adjust to maxillary growth and maintain rest position

Answer 25

vertically

Question 26

______: Posterior growth resulting in an anterior displacement of the mandible

Answer 26

Ramus

Question 27

_____: Superior growth direction as well as lateral resulting in an anterior displacement of the mandible.

Answer 27

Condyle