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EFDA Practice Questions.
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EFDA Practice Questions.
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EFDA Practice QuestionsIn the Federation Dentaire International System for numbering, the first number
represents a _________, while the second number represents a _________. -
ANS-quadrant, tooth
What is the visible portion of the anatomical crown known as? - ANS-the clinical crown
The area where the roots divide - ANS-furcation
The point or area where approximating teeth in the same arch touch or meet each other
is referred to as the ________. - ANS-contact area
Where are the TWO purposes of contact areas? - ANS--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 - ANS-the furrow
What is the HARDEST tissue in the body? - ANS-enamel
What cells form enamel? - ANS-ameloblasts
The bulk of the tooth is made up of - ANS-dentin
In permanent teeth, the process of enamel formation is completed about ___ years
before eruption. - ANS-3
What is the composition of enamel? - ANS-95% inorganic matter, 5% organic matter
and water
What is the SECOND hardest material in the body? - ANS-dentin
What is the composition of dentin? - ANS-70% inorganic, 20% organic, 10% water
The three major types of dentin - ANS-primary, secondary, reparative
,What type of dentin is a DEFENSE reaction to an area of injury? - ANS-reparative
dentin
What has the HIGHEST fluoride content of all the materialized tissue? - ANS-cementum
The two types of cementum - ANS-acellular and cellular
What type of cementum ACTIVELY produces new layers of cementum throughout the
life of the tooth? - ANS-cellular
What teeth have the cusp of Carabelli? - ANS-maxillary first molars
The ridge formed by the union of two triangular ridges - ANS-transverse ridge
The spillway provides an escape for food from the _______ surface during the
mastication (chewing) process. - ANS-occlusal
The uncut tooth structure adjacent to the cavity prep - ANS-cavosurface
line angle - ANS-two walls
point angle - ANS-three walls
A thin soft tissue that is loosely attached to the underlying bone - ANS-alveolar mucosa
T or F
Undue stress continually placed on the body can contribute to lower back pain,
circulatory problems, muscle aches, and tension - ANS-True
When seated, the thighs should be _______ to the floor - ANS-parallel
The chair is raised or lowered to achieve ____ to ____ inches distance between the
patient's face and the operator's face - ANS-12 to 14
The back of the patient chair is raised until its angle to the floor is ______ degrees -
ANS-25-45
The three basic parts of an instrument are - ANS-the working end, shank, and handle
When seated, the lower legs should be _______ to the floor - ANS-perpendicular
, If the operator needs to lean forward, it should be done by bending at the - ANS-hips or
neck
What will increase visibility to the lingual surfaces of the mandibular anterior teeth? -
ANS-having the patient tilt their chin down
The flat, smooth working end of a condenser is referred to as - ANS-the nib
The FOUR basic principles of instrument use - ANS-grasp, finger rest, adaption,
activation
What grasp offers the GREATEST control of instrumentation during dental procedures
in the oral cavity? - ANS-modified pen grasp
The relationship between the working end of the instrument and the tooth surface -
ANS-adaption
The point of support or rest from which the hand moves to activate the instrument and
obtain the best position or adaption - ANS-finger rest or fulcrum
The movement of the instrument - ANS-activation
Most cavers are designed to _____ material rather than push it - ANS-pull
What are known as the OLDEST method used for retraction and dryness and are
recommended for isolation during SHORT procedures? - ANS-cotton rolls
T or F
Cotton rolls should be adjacent to the parotid and sublingual gland ducts to absorb the
flow of saliva coming from these ducts - ANS-True
T or F
The advantage of a cotton roll holder is that the cheek and tongue are SLIGHTLY
retracted thus giving better visibility - ANS-True
The part of the rubber dam clamp that is expanded to fit over a tooth - ANS-jaw
A general guideline to placing a rubber dam is to isolate at least ____ tooth distal, and
_____ teeth mesial to the tooth being restored. - ANS-one tooth distal, two teeth mesial
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