RDH- Instrumentation
During periodontal instrumentation, a face to tooth surface angulation of 40° will result in?
a. Damage to surrounding tissues
b. Damage to the root surface
c. Calculus removal
d. Burnish calculus - ✔✔ correct answer D. Burnish calculus
The finger that serves as a support beam during calculus removal is the?
A. Index finger
B. Middle finger
C. Ring finger
D. Thumb - ✔✔ correct answer C. Ring finger
Gracey curetes are accurately described as self angulated because when the lower shank is parallel
to the to the surface to be instrumented. The lower cutting edge is automatically at the correct
angulation for periodontal debridement.
A. The first statement is true, the second is false
B. The first statement is false, the second is true
C. Both statements are true
D. Both statements are false - ✔✔ correct answer C. Both statements are true
While performing root planing with anesthesia, a skilled dental hygienist should be able to
accomplish complete removal of calculus in areas of deep, restricted pockets.
A. The first statement is true, the second is false
B. The first statement is false, the second is true
C. Both statements are true
D. Both statements are false - ✔✔ correct answer B. The first statement is false, the second is true
The protective features of Gracie currents include each of the following except one which one is the
exception?
A. Rounded toe
B. Rounded back
C. Tilted face in relation to lower shank
,RDH- Instrumentation
D. Triangular cross-section - ✔✔ correct answer D. Triangulation cross-section
What is the primary purpose of periodontal debridement?
A. Removal of clinically detectable calculus
B. Removal of all plaque retentive factors
C. Removal of disease cementum and calculus
D. Established of a smooth tooth surface
E. Restoration of gingival health - ✔✔ correct answer E. Restoration of gingival health
Tooth polishing is viewed as a non-essential procedure with limited application. Tooth polishing is
viewed as an essential component of a complete prophylaxis that has beneficial therapeutic effects.
A. Both statements are true
B. Both statements are false
C. The first statement is true, the second is false
D. The first statement is false, the second is true - ✔✔ correct answer C. The first statement is true,
the second is false
What is the best instrument to use for debriding a dental implant?
A. Metal instruments of various working and designs
B. Plastic instrument with graphite filler
C. Ultrasonic or sonic instrument with graphite filler
D. Plastic instrument of various working-end design - ✔✔ correct answer D. Plastic instrument of
various working-end design
Which of the following indicates a dull correct?
A. Calculus is removal in large pieces
B. Tactile sensitivity increases
C. Lateral pressure increases
D. Operator control increases - ✔✔ correct answer C. Lateral pressure increases
By what percentage is the blade of a mini five instrument shorter than a traditional instrument?
A. 30%
, RDH- Instrumentation
B. 40%
C. 50%
D. The blades are the same size - ✔✔ correct answer C. 50%
Smaller diameter instrument handles decrease muscle fatigue - ✔✔ correct answer False. Smaller
diameter instrument handles can increase muscle fatigue as they require more pinch forced to hold
and can lead to muscle cramping
Hollow Instrument handles help the clinician feel vibrations transmitted from the working and with
your fingers as the rest on the shank an instrument handle - ✔✔ correct answer True. Hollow
instruments can increase tactile sensitivity
Knurling Refers to texture on an instrument handle - ✔✔ correct answer True. Another term for
texturing is a knurling pattern
The terminal shank is the portion of the instrument between the working end and the handle - ✔✔
correct answer False. The terminal (lower) Shank is the portion of the functional shank that is nearest
to the working end
The terminal shank is normally perpendicular to the tooth surface - ✔✔ correct answer False. The
terminal sink is normally parallel to the tooth surface
Shorter shanks are helpful in deep periodontal pockets and on posterior teeth - ✔✔ correct answer
Falls. Terminal Shanks can be a standard or extended length. An extended terminal shank is 3 mm
longer than a standard shank
Simple shanks typically contain only one band - ✔✔ correct answer True. A simple shank Is also
referred to as a straight shank
When the tip or toe of a working and is facing a clinician, an instrument with a complex shape may
appear to have a zigzag shape - ✔✔ correct answer True. An instrument with a complex shank design
is useful for posterior teeth. A complex shank is a shank that is bent into planes. When the tip or toe
of a working end Is facing a clinician, an instrument with a complex shape may appear to have a
zigzag shape
During periodontal instrumentation, a face to tooth surface angulation of 40° will result in?
a. Damage to surrounding tissues
b. Damage to the root surface
c. Calculus removal
d. Burnish calculus - ✔✔ correct answer D. Burnish calculus
The finger that serves as a support beam during calculus removal is the?
A. Index finger
B. Middle finger
C. Ring finger
D. Thumb - ✔✔ correct answer C. Ring finger
Gracey curetes are accurately described as self angulated because when the lower shank is parallel
to the to the surface to be instrumented. The lower cutting edge is automatically at the correct
angulation for periodontal debridement.
A. The first statement is true, the second is false
B. The first statement is false, the second is true
C. Both statements are true
D. Both statements are false - ✔✔ correct answer C. Both statements are true
While performing root planing with anesthesia, a skilled dental hygienist should be able to
accomplish complete removal of calculus in areas of deep, restricted pockets.
A. The first statement is true, the second is false
B. The first statement is false, the second is true
C. Both statements are true
D. Both statements are false - ✔✔ correct answer B. The first statement is false, the second is true
The protective features of Gracie currents include each of the following except one which one is the
exception?
A. Rounded toe
B. Rounded back
C. Tilted face in relation to lower shank
,RDH- Instrumentation
D. Triangular cross-section - ✔✔ correct answer D. Triangulation cross-section
What is the primary purpose of periodontal debridement?
A. Removal of clinically detectable calculus
B. Removal of all plaque retentive factors
C. Removal of disease cementum and calculus
D. Established of a smooth tooth surface
E. Restoration of gingival health - ✔✔ correct answer E. Restoration of gingival health
Tooth polishing is viewed as a non-essential procedure with limited application. Tooth polishing is
viewed as an essential component of a complete prophylaxis that has beneficial therapeutic effects.
A. Both statements are true
B. Both statements are false
C. The first statement is true, the second is false
D. The first statement is false, the second is true - ✔✔ correct answer C. The first statement is true,
the second is false
What is the best instrument to use for debriding a dental implant?
A. Metal instruments of various working and designs
B. Plastic instrument with graphite filler
C. Ultrasonic or sonic instrument with graphite filler
D. Plastic instrument of various working-end design - ✔✔ correct answer D. Plastic instrument of
various working-end design
Which of the following indicates a dull correct?
A. Calculus is removal in large pieces
B. Tactile sensitivity increases
C. Lateral pressure increases
D. Operator control increases - ✔✔ correct answer C. Lateral pressure increases
By what percentage is the blade of a mini five instrument shorter than a traditional instrument?
A. 30%
, RDH- Instrumentation
B. 40%
C. 50%
D. The blades are the same size - ✔✔ correct answer C. 50%
Smaller diameter instrument handles decrease muscle fatigue - ✔✔ correct answer False. Smaller
diameter instrument handles can increase muscle fatigue as they require more pinch forced to hold
and can lead to muscle cramping
Hollow Instrument handles help the clinician feel vibrations transmitted from the working and with
your fingers as the rest on the shank an instrument handle - ✔✔ correct answer True. Hollow
instruments can increase tactile sensitivity
Knurling Refers to texture on an instrument handle - ✔✔ correct answer True. Another term for
texturing is a knurling pattern
The terminal shank is the portion of the instrument between the working end and the handle - ✔✔
correct answer False. The terminal (lower) Shank is the portion of the functional shank that is nearest
to the working end
The terminal shank is normally perpendicular to the tooth surface - ✔✔ correct answer False. The
terminal sink is normally parallel to the tooth surface
Shorter shanks are helpful in deep periodontal pockets and on posterior teeth - ✔✔ correct answer
Falls. Terminal Shanks can be a standard or extended length. An extended terminal shank is 3 mm
longer than a standard shank
Simple shanks typically contain only one band - ✔✔ correct answer True. A simple shank Is also
referred to as a straight shank
When the tip or toe of a working and is facing a clinician, an instrument with a complex shape may
appear to have a zigzag shape - ✔✔ correct answer True. An instrument with a complex shank design
is useful for posterior teeth. A complex shank is a shank that is bent into planes. When the tip or toe
of a working end Is facing a clinician, an instrument with a complex shape may appear to have a
zigzag shape
