MF GROWTH Flashcards
Sutural growth + endochondral growth + remodeling
Neurocranium and midface
Neurocranium growth completed by ___________.
7 years old
Functional matrix theory
Soft tissue stimulate facial growth
Growth hormone affects _________ more.
Mandible (more than maxilla)
____% of growth in girls is completed by menarche
80%
True/False
During puberty, the vertical condyle grows more than the vertical sum of the upper/lower first molars extrusion
True
The angle of the mandible to SN _________ with growth.
Decreases
________ growth continues throughout life.
Vertical
Not normal type of growth of cranium
Synostoses (fusion of sutures)
When you see peak height velocity occurring, how many years of growth do you typically have remaining?
2 years
At what stage has peak mandibular growth already occurred?
CVMS 3
Most important landmark in hand/wrist?
Sesamoid (2 years of growth left)
__________ gives rise to oral cavity.
Stomodeum
What gives rise to medial nasal process, lateral nasal process, intermaxillary segment, nasal placodes, and nasal pits
Frontonasal process (develops from ectodermal tissue and neural crest cells)
The __________ segment forms when the two medial nasal processes fuse. This will include the primary palate, the incisors, and nasal septum.
Intermaxillary segment
___________ forms philtrum, primary palate, and premaxilla.
Medial nasal process
___________ forms the ala of the nose.
Lateral nasal process
When the ___________ and __________ fuse, it forms the upper lip and anterior alveolus.
Failure to fuse causes ____________.
- Maxillary processes + medial nasal process
- Cleft lip
The secondary palate, the portion posterior to the incisive foramen, forms through the fusion of paired outgrowths of the ____________, the palatal shelves. Failure to fuse causes _____________.
- Maxillary prominences
- Cleft palate
___________ forms during the 6th week from the median nasal process and maxillary process - cleft lip
Primary palate
Maxillary process: secondary palatal shelves (______ weeks) - cleft palate
8-10th
Timing of intersphenoidal?
Birth
Timing of interoccipital?
3-5 (years?)
Timing of anterior/posterior cranial base?
4-5 years
Timing of sphenoethmoidal?
Fuses 7-8 years old
Timing of Frontoethmoidal?
12-14?? NOT 7-8 yo
Timing of spheno-occipital?
15-20 (starts at 12)
__________ (growth CENTER): epiphysis, synchondrosis, nasal septum, ethmoid, sphenoid
Primary cartilage
___________ (growth SITE): condyle*, coronoid, midpalatal suture???
Secondary cartilage
Period of most somatic growth
Conception to birth
Development of mandible
Intramembranous growth lateral to meckel’s cartilage
Cranial base growth
Cartilaginous growth of the syncondrosis (enchondrosis)
Mandible symphysis fuses __________.
6-9 months (before 1 year)
Chin: deposition on _____________ (why we use internal anatomy of symphysis for superimpositions)
DON’T see change on the anterior facial surface.
Deposition on posterior and inferior symphysis. Posterior outer border.
- External lingual surface of symphysis
Maxilla:
- Apposition?
- Resorption?
- 3/5th apposition of _______ floor and 2/5th resorption of ________ floor
- Apposition: palatal (inferior) and posterior, A point
- Resorption: superior (nasal side), anterior
- Orbital, Nasal
Growth of cranial vault?
Intramembranous and remodeling
Growth of cranial base
Endochondral growth and bony replacement at the synchondroses
True/False
- Synchondroses: growth is unidirectional
FALSE
Growth of maxilla
Intramembranous and remodeling; deposition does NOT occur anterior and superior
Growth of mandible
Endochondral and remodeling; deposition external lingual symphysis
Mixed
MMOTS: Malleus, Mandible, Occipital, Temporal, Sphenoid
Endochondral only
SHICIE: Stapes, hyoid, inferior concha, incus, ethmoid
Maxilla and mandible achieve highest growth rate ________ height.
AFTER
Peak height velocity: _____ for girls, _____ for boys.
12, 14
______ relationship between lymphoid tissue and somatic tissue.
Inverse
Fusion of spheno-occipital synchondrosis marks the ________.
End of cranial base growth
Bjork’s implant study: _________ is most stable structure during growth
Zygomatic process
Bjork’s implant study: maxillary _______ rotation
forward
Bjork’s implant study: shows significant _______ of maxillary and mandibular molars
mesialization
Bjork’s implant study: _____ and _____ growth of the condyle.
Upward and forward
Bjork’s implant study: Mandibular _______ rotation
forward
Bjork’s implant study: bone apposition on the _______ of the ramus and resorption on the _______.
posterior, anterior (that’s how you get the 6s in place)
Bjork’s implant study: _______ bone is compensated for orbit growth
Frontal
