EFDA Practice Questions with Complete Solutions
In the Federation Dentaire International System for numbering, the first number represents a _________, while the second number represents a _________. - Correct Answer quadrant, tooth
What is the visible portion of the anatomical crown known as?...
in the federation dentaire international system fo
what is the visible portion of the anatomical crow
the area where the roots divide
the point or area where approximating teeth in the
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EFDA Practice Questions with Complete
Solutions In the Federation Dentaire International System for numbering, the first number represents a _________, while the second number represents a _________. - Correct Answer quadrant, tooth
What is the visible portion of the anatomical crown known as? - Correct Answer the clinical crown
The area where the roots divide - Correct Answer furcation
The point or area where approximating teeth in the same arch touch or meet each other is referred to as the ________. - Correct Answer contact area
Where are the TWO purposes of contact areas? - Correct 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 - Correct Answer the furrow
What is the HARDEST tissue in the body? - Correct Answer enamel
What cells form enamel? - Correct Answer ameloblasts
The bulk of the tooth is made up of - Correct Answer dentin
In permanent teeth, the process of enamel formation is completed about ___ years before eruption. - Correct Answer 3
What is the composition of enamel? - Correct Answer 95% inorganic matter, 5% organic matter and water What is the SECOND hardest material in the body? - Correct Answer dentin
What is the composition of dentin? - Correct Answer 70% inorganic, 20% organic, 10% water
The three major types of dentin - Correct Answer primary, secondary, reparative
What type of dentin is a DEFENSE reaction to an area of injury? - Correct Answer reparative dentin
What has the HIGHEST fluoride content of all the materialized tissue? - Correct Answer cementum
The two types of cementum - Correct Answer acellular and cellular
What type of cementum ACTIVELY produces new layers of cementum throughout the life of the tooth? - Correct Answer cellular
What teeth have the cusp of Carabelli? - Correct Answer maxillary first molars
The ridge formed by the union of two triangular ridges - Correct Answer transverse ridge
The spillway provides an escape for food from the _______ surface during the mastication (chewing) process. - Correct Answer occlusal
The uncut tooth structure adjacent to the cavity prep - Correct Answer cavosurface
line angle - Correct Answer two walls
point angle - Correct Answer three walls
A thin soft tissue that is loosely attached to the underlying bone - Correct Answer alveolar mucosa T or F
Undue stress continually placed on the body can contribute to lower back pain, circulatory problems, muscle aches, and tension - Correct Answer True
When seated, the thighs should be _______ to the floor - Correct Answer parallel
The chair is raised or lowered to achieve ____ to ____ inches distance between the patient's face and the operator's face - Correct Answer 12 to 14
The back of the patient chair is raised until its angle to the floor is ______ degrees - Correct Answer 25-
45
The three basic parts of an instrument are - Correct Answer the working end, shank, and handle
When seated, the lower legs should be _______ to the floor - Correct Answer perpendicular
If the operator needs to lean forward, it should be done by bending at the - Correct Answer hips or neck
What will increase visibility to the lingual surfaces of the mandibular anterior teeth? - Correct Answer having the patient tilt their chin down
The flat, smooth working end of a condenser is referred to as - Correct Answer the nib
The FOUR basic principles of instrument use - Correct Answer grasp, finger rest, adaption, activation
What grasp offers the GREATEST control of instrumentation during dental procedures in the oral cavity? - Correct Answer modified pen grasp
The relationship between the working end of the instrument and the tooth surface - Correct Answer adaption
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