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EFDA Practice Questions
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EFDA Practice QuestionsIn the Federation Dentaria International System for numbering, the first number
represents a _________, while the second number represents a _________. - answer
quadrant, tooth
What is the visible portion of the anatomical crown known as? - answer the clinical
crown
The area where the roots divide - answer furcation
The point or area where approximating teeth in the same arch touch or meet each other
is referred to as the ________. - answer contact area
Where are the TWO purposes of contact areas? - answer-to keep food from packing
between the teeth
-help stabilize the dental arches
Coronal to the actual division into two or more roots is a concavity that extends to or
nearly to the CEJ. This concavity is called - answer the furrow
What is the HARDEST tissue in the body? - answer enamel
What cells form enamel? - answer ameloblasts
The bulk of the tooth is made up of - answer dentin
In permanent teeth, the process of enamel formation is completed about ___ years
before eruption. - answer3
What is the composition of enamel? - answer95% inorganic matter, 5% organic matter
and water
What is the SECOND hardest material in the body? - answer dentin
What is the composition of dentin? - answer70% inorganic, 20% organic, 10% water
The three major types of dentin - answerprimary, secondary, reparative
What type of dentin is a DEFENSE reaction to an area of injury? - answerreparative
dentin
, What has the HIGHEST fluoride content of all the materialized tissue? -
answercementum
The two types of cementum - answeracellular and cellular
What type of cementum ACTIVELY produces new layers of cementum throughout the
life of the tooth? - answercellular
What teeth have the cusp of Carabelli? - answermaxillary first molars
The ridge formed by the union of two triangular ridges - answertransverse ridge
The spillway provides an escape for food from the _______ surface during the
mastication (chewing) process. - answerocclusal
The uncut tooth structure adjacent to the cavity prep - answercavosurface
line angle - answertwo walls
point angle - answerthree walls
A thin soft tissue that is loosely attached to the underlying bone - answeralveolar
mucosa
T or F
Undue stress continually placed on the body can contribute to lower back pain,
circulatory problems, muscle aches, and tension - answerTrue
When seated, the thighs should be _______ to the floor - answerparallel
The chair is raised or lowered to achieve ____ to ____ inches distance between the
patient's face and the operator's face - answer12 to 14
The back of the patient chair is raised until its angle to the floor is ______ degrees -
answer25-45
The three basic parts of an instrument are - answerthe working end, shank, and handle
When seated, the lower legs should be _______ to the floor - answerperpendicular
If the operator needs to lean forward, it should be done by bending at the - answerhips
or neck
What will increase visibility to the lingual surfaces of the mandibular anterior teeth? -
answerhaving the patient tilt their chin down
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