Intro Flashcards
(50 cards)
How many teeth in primary vs secondary dentition
Primary have 20 teeth
Secondary has 32 teeth
Mamelons vs perikymata on newly erupted teeth
M- three small scallops on incisal edge of anterior teeth, wear down over time
P- numerous horizontal ridges on enamel, closer together in cervical third, wear away over time
Root axis line aka
Mid-root axis line
Imaginary line through center of root
Splits tooth into facial and lingual halves
Finds the access
What occupies the interproximal space
(Aka the cervical embrasure)
The interdental papilla!!
Which two tissues are seen on a normal, in tact tooth
Enamel and cementum only
Contact areas move _____ and ______ as you move distally
They move facially and cervically
Embrasure space functions
Allow food to escape when chewing, so it does not get stuck between teeth
FDI numbering system
Rest of world uses
Secondary UR: 1- UL: 2- LL: 3- LR: 4-
Primary 5- 6- 7- 8-
The CEJ becomes ________ _________ as you move distally
CEJ becomes less pronounced
Palmer notation
Uses half square line to notate white quadrant
In the square is a number to tell which tooth from the midline
HOC in posterior teeth
Facial- cervical
Lingual- middle third
What do you call the area of a root before it bifurcates
Root trunk
Dentin develops from what and what cell makes it
Develops form the embryonic dental papilla in the mesoderm
Made by odontoblasts
Only organic part of a tooth
Pulp
Cervix=
Cervical line
What do you call the space between two roots of the same tooth
Furcal region
Which of the tooth tissues are considered calcified
Enamel, dentin, and cementum only
Pulp is living
Polyphyodont
Animals that have an endless succession of teeth throughout their life
Ex. Sharks, alligators
Homodonts
All teeth are the same
Ex. Whales
Are molars considered succedaneous teeth?
NOOOO
Bc they come in BEHIND primary dentition, they do not replace
Class of teeth vs type of teeth
Class- incisor, canine, molar etc
Type- lateral or central, first or second
Contact areas aka
Where are they located and exception
Aka proximal HOC
As you move distally, the HOC moves more cervically
EXCEPT mand 1 premolar!
CEJ curvature from the mesial/distal view?
From the facial/lingual view?
M/D: convex- the CEJ dips down towards the incisal third, less enamel on sides
F/L: concave- the CEJ runs up toward the cervical line, more enamel on front and back
What tooth tissue does HAP make up 95% of
Enamel
5% enamel matrix
