2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!
DASLE MN State Exam Questions and
Answers | Latest Update
Clinical Crown
✓ -:- That portion of the tooth that is visible in the oral cavity
Oral prophylaxis
✓ -:- The complete removal of calculus, debris, stain, and plaque from the teeth.
DH and DDS allowed
Selective Polishing
✓ -:- 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
✓ -:- - 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
1|P a g e | G r a d e A + | 2 0 2 0 2 5
,2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!
✓ -:- - 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
✓ -:- 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
✓ -:- originates from sources outside the tooth and are caused by environmental
agents.
Extrinsic Stain
✓ -:- appear on the exterior of the tooth, and CAN be removed by polishing
Examples: Food, Drink, Tobacco
2|P a g e | G r a d e A + | 2 0 2 0 2 5
,2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!
Intrinsic Stain
✓ -:- 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
✓ -:- black stain, brown stain, yellow stain, tobacco stain, green stain, dental plaque
agents, food and drink, Nasmyth's membrane
Intrinsic Stain Examples
✓ -:- Pulpless teeth, Tetracycline antibiotics, dental fluorosis, imperfect tooth
development, silver amalgam
Two methods of stain removal
✓ -:- Air-powder polishing and rubber cup polishing
Rubber cup polishing
✓ -:- A technique that is used to remove plaque and stains from the coronal
surfaces of the teeth. Most common
Polishing cups
3|P a g e | G r a d e A + | 2 0 2 0 2 5
, 2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!
✓ -:- Soft, webbed polishing cups are used to clean and polish the smooth surfaces
of the teeth.
Bristle Brushes
✓ -:- 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
✓ -:- Pen grasp
fulcrum
✓ -:- 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)
✓ -:- 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?
✓ -:- regular prophy paste
4|P a g e | G r a d e A + | 2 0 2 0 2 5
DASLE MN State Exam Questions and
Answers | Latest Update
Clinical Crown
✓ -:- That portion of the tooth that is visible in the oral cavity
Oral prophylaxis
✓ -:- The complete removal of calculus, debris, stain, and plaque from the teeth.
DH and DDS allowed
Selective Polishing
✓ -:- 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
✓ -:- - 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
1|P a g e | G r a d e A + | 2 0 2 0 2 5
,2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!
✓ -:- - 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
✓ -:- 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
✓ -:- originates from sources outside the tooth and are caused by environmental
agents.
Extrinsic Stain
✓ -:- appear on the exterior of the tooth, and CAN be removed by polishing
Examples: Food, Drink, Tobacco
2|P a g e | G r a d e A + | 2 0 2 0 2 5
,2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!
Intrinsic Stain
✓ -:- 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
✓ -:- black stain, brown stain, yellow stain, tobacco stain, green stain, dental plaque
agents, food and drink, Nasmyth's membrane
Intrinsic Stain Examples
✓ -:- Pulpless teeth, Tetracycline antibiotics, dental fluorosis, imperfect tooth
development, silver amalgam
Two methods of stain removal
✓ -:- Air-powder polishing and rubber cup polishing
Rubber cup polishing
✓ -:- A technique that is used to remove plaque and stains from the coronal
surfaces of the teeth. Most common
Polishing cups
3|P a g e | G r a d e A + | 2 0 2 0 2 5
, 2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!
✓ -:- Soft, webbed polishing cups are used to clean and polish the smooth surfaces
of the teeth.
Bristle Brushes
✓ -:- 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
✓ -:- Pen grasp
fulcrum
✓ -:- 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)
✓ -:- 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?
✓ -:- regular prophy paste
4|P a g e | G r a d e A + | 2 0 2 0 2 5
