OCB02-1007 Mechanisms of post-natal growth Flashcards
What age does the 1st permanent molar erupt?
7
What age does the 2nd permanent molar erupt?
12
When does the 3rd molar erupt?
Maturity
What are the 3 parts of the craniofacial complex?
Cranial vault
Cranial Base
Face
How many fontanelles are present in the head?
6
What path does the face growth take?
The face follows the somatic growth curve excepts the skeleton around the eyes, middle and inner ear which follows neural growth pattern
What organs develop faster than the face?
Brain and sense organs
At what age does the cranial vault completely expand?
10
What is facial growth completed with?
Eruption of 3rd molars
What parts of the body does the cranial base link?
brain and face
What are the two kinds of bone in the head?
Endochondral and membrane
Where are skeletal structures in head derived from?
Neural crest cells
Where is the cranial vault derived from?
Cranial mesodermal cells
What bones are endochondral?
Cranial base, pharyngeal arch cartilages, otic and nasal capsule
Where is there primary cartilage?
Synchondrosis between the basi-occipital and basi-sphenoid and the nasal septum
Where does interstitial growth occur?
Between growth plates