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DASLE MN STATE EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS
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DASLE MN STATE EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS
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DASLE MN STATE EXAM 2024/2025WITH 100% ACCURATE SOLUTIONS
Clinical Crown - Precise Answer ✔✔That portion of the tooth that is
visible in the oral cavity
Oral prophylaxis - Precise Answer ✔✔The complete removal of
calculus, debris, stain, and plaque from the teeth.
DH and DDS allowed
Selective Polishing - Precise Answer ✔✔a procedure in which only
those teeth or surfaces with stain are polished
Purpose is to avoid unnecessary removal of even small amounts of
surface enamel
Indications for Coronal Polishing - Precise Answer ✔✔- Before
placement of dental sealants - Before placement of dental dam - Before
cementation of orthodontic bands - before cementation of crowns and
bridges - before application of acid etching solution (if indicated by
manufacturer)
Contraindications for Coronal Polishing - Precise Answer ✔✔- when no
stains are present - patients who are high risk for dental caries (ex: bottle
,caries, root caries, thin demineralization enamel) - sensitive teeth -
newly erupted teeth B/C mineralization of tooth surface maybe
incomplete
Endogenous stains - Precise Answer ✔✔Stains developed from within
the structure of the tooth
Example: Excessive amount of fluoride during tooth formation,
medications taken by the mother or the child during tooth development
(Tetracycline)
CANNOT be removed by polishing
Exogenous Stain - Precise Answer ✔✔originates from sources outside
the tooth and are caused by environmental agents.
Extrinsic Stain - Precise Answer ✔✔appear on the exterior of the tooth,
and CAN be removed by polishing
Examples: Food, Drink, Tobacco
Intrinsic Stain - Precise Answer ✔✔Caused by environmental agents but
CANNOT be removed because the stain has become incorporated into
the structure of the tooth.
Examples: Amalgam tattoo, smoking, chewing, or dipping
,Extrinsic Stain Examples - Precise Answer ✔✔black stain, brown stain,
yellow stain, tobacco stain, green stain, dental plaque agents, food and
drink, Nasmyth's membrane
Intrinsic Stain Examples - Precise Answer ✔✔Pulpless teeth,
Tetracycline antibiotics, dental fluorosis, imperfect tooth development,
silver amalgam
Two methods of stain removal - Precise Answer ✔✔Air-powder
polishing and rubber cup polishing
Rubber cup polishing - Precise Answer ✔✔A technique that is used to
remove plaque and stains from the coronal surfaces of the teeth. Most
common
Polishing cups - Precise Answer ✔✔Soft, webbed polishing cups are
used to clean and polish the smooth surfaces of the teeth.
Bristle Brushes - Precise Answer ✔✔made from either natural or
synthetic materials, may be used to remove stains from deep pits and
fissures of the enamel surfaces
Grasping the handpiece - Precise Answer ✔✔Pen grasp
, fulcrum - Precise Answer ✔✔provides stability for the operator and
must be placed in such a way to allow movement of the wrist and
forearm.
Abrasives (cleaning and polishing agents) - Precise Answer ✔✔extra
coarse, coarse, medium, fine, extra fine
the coarser the agent, the greater is the abrasion to the surface
What prophy paste is not recommended for esthetic restorations? -
Precise Answer ✔✔regular prophy paste
Low-abrasive pastes such as micron-fine sapphire or diamond paste or
aluminum oxide paste should be used for restorations.
Factors that influence the rate of abrasion - Precise Answer ✔✔The
more agent used, the greater the degree of abrasion.
The lighter the pressure, the less abrasion.
The slower the rotation of the cup, the less abrasion.
Sequence of Polishing - Precise Answer ✔✔Aesthetic and porcelain
restorations should be polished first
Operators preference
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