Dynamics Of Facial Growth

Question 1

Anatomic regions of the craniofacial skeleton

Answer 1

Desmocranium -neurocranium
Chondrocranium - neurocranium / face
Viscerocranium - face / oral apparatus
Dentition - oral apparatus

Question 2

Nasomaxillary complex is composed of the following bones

Answer 2

Nasal
Maxilla
Zygomatic
Lacrimal
Palatine
Turbinates
Vomer

Question 3

What age does premaxillary bone fuses with maxillary

Answer 3

305yrs after birth

Question 4

Suture that connect the midface to the neurocranium

Answer 4

Circummaxillary suture system

Question 5

What are the circumaxillary suture system

Answer 5

Frontonasal
Frontozygomatic
Frontomaxilla
Nasomaxillary
Tmporozygomatic
Zygomaticomaxillary
Intermaxillary
Pterygomaxillary

Question 6

What are the intermaxilary suture system

Answer 6

Intermaxillary suture
Transpalatal suture
Midpalatal suture
Internasal suture

Question 7

What branchiall arch does the maxillary process rises

Answer 7

First branchial arch

Question 8

What ossification does the nasomaxillary complex relies on and why?

Answer 8

Intramembranous ossification

Because they have no cartilaginous precursor

Question 9

Primary factors influencing bone growth from the late embryonic period

Answer 9

Expansion of the brain and cranial vault
Growth of anterior cranial base
Expansion of nasal cavity and oropharynx

Question 10

Maxilla develops postnatally by ___ ossification

Answer 10

Intramembranous

Question 11

Growth of cranial base moves maxilla ___

Answer 11

Forward

Question 12

Displacement from cranial base growth is an important part of maxilla’s forward growth until the age of ___ years

Answer 12

6 years

Question 13

____ deficiency results from failure of normal lengthening of cranial base

Answer 13

Midface deficiency

Question 14

Growth sites in the nasomaxillary complex

Answer 14

NAPS

Nasal septum
Alveolar processes
Periosteal/endosteal surface
Sutures

Question 15

Suture attaching thr maxilla allows its ___ and ___ repositioning (movement)

Answer 15

Downward and forward

Question 16

Premaxillary/maxillary sutures closes at ___ age

Answer 16

3-5 yrs

Question 17

Midpaltal and transpalatal sutures closes between ___ up to ___ age

Answer 17

15-18 up to 20-25 yrs

Question 18

In what age does growth of the bran and eyes completed resulting in a stable anterior cranial base , but growth of the nasomaxllary complex continues throughout childhood and adolescence

Answer 18

7years of age

Question 19

Growth in maxillary height

Answer 19

Sutural growth in frontal and zygomatic bone
Bone appositon in the floor of orbit
Resorption of nasal floor and apposition in hard palate
Maxillary alveolar process while in late adolescence

Question 20

Growth in maxillary width

Answer 20

Primarily by growth in MEDIAL PALATAL SUTURE

Sutural growth increase mimics the general growth curve of body

Maximum pubertal growth in median suture coincides with that in facial sutures

Question 21

Growth in maxillary length

Answer 21

Occurs by apposition on maxillary tuberosity and by sutural growth toward palatine bone

Labial surface of maxilla moves away from largely inferior direction of growth

Question 22

Age does nasal bone growth completes

Answer 22

10years old, then only by artilage after