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EFDA book notes Questions and Answers 100% Correct
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Exam of 11 pages for the course EFDA at EFDA (EFDA book notes)
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EFDA book notespurposes of contact areas - answer keep food from packing btwn teeth
stabilize dental arches
protect soft tissue
prevent plaque build up
area where roots divide - answer furcation
coronal to actual division into two or more roots is a concavity that extends nearly to
CEJ - answer furrow
visible portion of anatomical crown extending from the crest of soft tissue to
incisal/occlusal surfaces - answer clinical crown
part of tooth that is the portion that extends from incisal or occlusal surface to CEJ -
answer anatomical crown
broad biting convex surface that function to grind food - answer posterior teeth
tear or incise food - answer anterior teeth
federation dentaire international system for numbering - answer4 quadrants 1-4
tooth numbers 1-8 in each quadrant
ex. quandrant 1 tooth 1-11
quandran 4 tooth 1-41
quandran 3 tooth 8- 38
what is the maxillary left 3rd molar number in FDI numbering systme - answer28
begins upp right 3rd molar, 1-16 and 17-32 – answer univsersal numbering system
spaces adjacent to and surrounding the contact of teeth in teh same arch are refereed
to as - answerembrassures
are continous with interpsoximal space between teeth - answerembrassures
what are the name of the four embrassures that surround the contact area -
answerfacial embrassure, lingual embrassure, gingival embrassure, incisal/occlusal
embrassure
function of embrassure - answerself cleansing
, ttoh is compose fo four distinc histological structures - answerenamel, dentin,
cementum, pulp
the anatmocial crown of the tooth and vaires in thickness in differeant areas of the tooth
- answerenamel
the enamel is thicker at the - answerincisal and occlusal areas and become thinner
toward root tapering off at CEJ
color of enamel is - answeryellowish wthie to graish white depend on thickness and
color of underlying dentin
enamel is the hardest tissue in the body and is very brittle
true or false - answertrue
composition of enamel
inorganic
organic
water - answer95%% inorganic
0.5%organic matter
4% water
cells that produce enamel and form rods - answerameloblasts
to ensure that rods are supported by sound dentin, the enamel wall of a preparation is
at what degree or more angle relative to the unprepared enamel - answer90 degree
the bulk of the tooth is made up of this second hardest material in the body, hard
connective tissue lying just inside the enamel adn cementum, insulates and protects
from outside stimuli - answerdentin
dentin provides support for enamel and increases or decreases hardness as it ages -
answerincreases
what color is dentin - answeryellowish white and darker than enamel and slowly darkens
with age, flat dull appearance
denins is compose dprimarily of cells adn matrix of interceullar materiaol, how much is
inorganic
organic
water - answer70% inorganic
20% organic
10% water
dentin is formed by cells called, which develops with pulp from dental papilla of tooth
bud - answerodontoblasts
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