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dh quiz 8 i think
Terms in this set (28)
not acceptable methods for removing calculus.
layer-by-layer beginning with the outermost layer.
removing the deposit in one forceful stroke
correct working-end of a double-ended universal curet for a posterior sextant
shank parallel to distal
correct working-end of a double-ended universal curet for an anterior tooth
ower shank goes across the tooth surface.
A universal curet has a_______ back
universal curet is used to remove
medium subgingival calculus
A curet with a long (extended) lower shank length will work best to remove a medium-sized calculus deposit located approximately
5 mm below the gingival margin.
A firm grasp of the sickle scaler is used to remove
large supragingival calculus deposits
A horizontal stroke is recommended when removing subgingival calculus deposits on the
line angle region of a molar tooth using a universal curet.
correct adaptation of a universal curet on the distal surface of the mandibular first molar
the lower shank should be tilted slightly toward the distal surface.
The recommended angulation for a calculus removal stroke with a universal curet apical to (beneath) a medium-sized subgingival calculus deposit is
70 to 80 degrees.
The sickle scaler has a pointed tip, level cutting edges on each working-end, and the face is
perpendicular to the lower shank.
The visual clue to determine the correct working-end of a double-ended sickle scaler and curet for a posterior sextant is
the lower shank is parallel to the distal surface.
Oblique stroke directions are most commonly used
with a sickle scaler on the facial and lingual surfaces of the crowns of molar teeth.
vertical stroke directions are most commonly used with the anterior sickle scaler
interproximals of mandibular anterior teeth.
A sickle scaler is recommended to remove
large ledge of supragingival calculus.
Oblique calculus removal strokes with a sickle scaler are most commonly used on
the facial surface of a molar.
Steps for removing large supragingival deposits in sections is as follows
position the working-end, lock the toe-third of the instrument on the tooth surface, ensure the fulcrum finger is straight supporting the hand & pressing down on the occlusal tooth surface, pinch pressure is applied with the index finger and thumb on instrument handle, and then activate the instrument stroke.
Large supra or subgingival calculus deposits
removed in sections using a firm grasp, moderate lateral pressure, and short biting calculus removal strokes.
Light or NO lateral pressure and a light grasp
used with an assessment stroke to increase tactile sense.
Moderate lateral pressure is used against the tooth surface to initiate
a calculus removal stroke with a sickle scaler.
working-end of a sickle scaler and a curet to a molar tooth, face is perpendicular to _______ and the lower shank should be tilted slightly toward the _____ surface.
lower shank, distal
Effective calculus removal is achieved by using what pressure
calc removal agulation and an angulation between 45 and 90 degrees.
ideal calc removal angulation
sickle scaler angulation
70 to 80 degrees.
A sickle scaler is not to be used sub-gingivally on the root surfaces even if tissue recession is present on the tooth.
The triangular cross section of a sickle scaler could result in tissue trauma if used sub-gingivally.
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