ch 14 embryo
Card Set Information
ch 14 embryo
ch 14 Periodontium-CEMENTUM
what is the most important part for hygienists concerning oral health?
the hard and soft tissues that support the teeth is:
what are the three components of periodontium?
PDL (connects cementum to bone)
where does cementum come from?
what component covers the entire root?
cementum (like enamel covering the crown)
one end of attachment for the PDL is ___________ and the other is the alveolar bone
is cementum AVASCULAR or VASCULAR?
where does it get its nourishment?
from the PDL OUTSIDE of the tooth
cementum is _____ % mineralized, enamel is ____% mineralized and dentin is ______% mineralized
96% (or high 90s)
remember....the ameloblasts couldn't create enamel because they didn't have their _______, the ondontoblasts started laying ________ matrix
THE NEWLY FORMED DENTIN induced the cells of the ________ _____ to differentiate into ___________
Cementoblasts laid their _________ and some of the cementoblasts got caught in the matrix and became ___________
the ends of the PDL that have embedded themselves into the cementum
where the cementum and enamel meet
what are the three types of CEJs where they meet?
in overlap of the CEJ the cementum overlaps the enamel because:
the enamel was formed first
what type of meeting of the CEJ may be mistaken with calculus?
which meet PERFECTLY in the middle?
MEET of the CEJ
when there is a space between the cementum and enamel, the underlying dentin is exposed, this is called:
GAP of the CEJ
which meeting type of the CEJ can cause dentin hypersensitivity?
GAP, esp with recession. eyechihuahua!
what are the two different lines of cementum repair?
you are under arrest lines
after cementum resorption, you can tell where the resorption stopped and started laying down new cementum, these are called:
just like Retzius lines with enamel and lines of Von Ebner with dentin, for cementum they are called:
name the two types of cementum
the first cementum to get laid down, no cementocytes is:
the last cementum to get laid down is:
which cementum gets laid at a quicker pace so the cementoblasts get stuck in it?
CELLULAR (when on your CELLULAR, you say, BLAST! i am STUCK talking to Uncle QUICK)
T/F the cementoblasts that DON'T get stuck migrate to the periphery of the cellular cementum and wait there until more cementum is needed.
TRUE! Heaven be Praised some didn't get stuck!
name three clinical considerations with cementum:
kind of like a clam and a grain of sand, the clam doesn't like it, spits on it and creates a pearl _________ are similar in cementum
cementicles: cementoblasts start to lay _________ around cellular ________ in the PDL
a cementicle can just float there or start to fuse with ________ as more is laid
what starts as debris or floating in the PDL?
clinical consideration that was laid down screwy and caused a spur of cementum to come off the CEJ, similar to enamel pearls
excessive production of cementum is which clinical consideration of cementum?
this clinical consideration results from occlusal trauma (clenching/grinding)