Dynamics Of Facial Growth Flashcards
Anatomic regions of the craniofacial skeleton
Desmocranium -neurocranium
Chondrocranium - neurocranium / face
Viscerocranium - face / oral apparatus
Dentition - oral apparatus
Nasomaxillary complex is composed of the following bones
Nasal
Maxilla
Zygomatic
Lacrimal
Palatine
Turbinates
Vomer
What age does premaxillary bone fuses with maxillary
305yrs after birth
Suture that connect the midface to the neurocranium
Circummaxillary suture system
What are the circumaxillary suture system
Frontonasal
Frontozygomatic
Frontomaxilla
Nasomaxillary
Tmporozygomatic
Zygomaticomaxillary
Intermaxillary
Pterygomaxillary
What are the intermaxilary suture system
Intermaxillary suture
Transpalatal suture
Midpalatal suture
Internasal suture
What branchiall arch does the maxillary process rises
First branchial arch
What ossification does the nasomaxillary complex relies on and why?
Intramembranous ossification
Because they have no cartilaginous precursor
Primary factors influencing bone growth from the late embryonic period
Expansion of the brain and cranial vault
Growth of anterior cranial base
Expansion of nasal cavity and oropharynx
Maxilla develops postnatally by ___ ossification
Intramembranous
Growth of cranial base moves maxilla ___
Forward
Displacement from cranial base growth is an important part of maxilla’s forward growth until the age of ___ years
6 years
____ deficiency results from failure of normal lengthening of cranial base
Midface deficiency
Growth sites in the nasomaxillary complex
NAPS
Nasal septum
Alveolar processes
Periosteal/endosteal surface
Sutures
Suture attaching thr maxilla allows its ___ and ___ repositioning (movement)
Downward and forward
Premaxillary/maxillary sutures closes at ___ age
3-5 yrs
Midpaltal and transpalatal sutures closes between ___ up to ___ age
15-18 up to 20-25 yrs
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
7years of age
Growth in maxillary height
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
Growth in maxillary width
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
Growth in maxillary length
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
Age does nasal bone growth completes
10years old, then only by artilage after
