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CLINIC THEORY 2 MIDTERM EXAM
QUESTIONS WITH VERIFIED
SOLUTIONS
Extrinsic stains are always ____ - correct-answer - exogenous
T/F
Intrinsic are always endogenous - correct-answer - F
can be BOTH exogenous and endogenous
UHN for whitening - correct-answer - wholesome facial image
3 types of whitening toothpastes - correct-answer - 1) *Abrasive*
2) Has a *Bleaching Agent* - not recommended for long term use
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3) Has *Titanium Dioxide* - covers extrinsic stains like a coat of paint, but DOES
NOT change internal tooth color
Commercial bleaching kits - correct-answer - mouth tray which is adjusted to the
client's teeth by the method of "boil and fit"
-with *oxidizing agent* placed in tray
-some kits have an *acidic pre-rinse*
T/F
Clients that use OTC bleaching products may neglect regular dental visits by self-
treating stain areas - correct-answer - T
T/F
The Council of Scientific Affairs of the ADA does not recommend any OTC
products and suggests that clients seek professional care to lighten teeth -
correct-answer - T
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DH's role in bleaching - correct-answer - -educate patient on ramifications prior to
treatment
-determine *etiology* of stain
-determine *allergies*
-determine *client expectations*
-assess for *Contraindicating lesions* for whitening
-assess for *caries* and *defective restorations*
-assess tooth *sensitivity*
-evaluate *translucency* of teeth
-assess presence and extent of *recession*
-determine size and vitality of *pulp*
-rads
-percussion, thermal, electric pulp testing
-assess patient's *OSC*
-assist client in setting *realistic expectations*
--> use shade guide + photos
-assess for presence of *cracks*
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-remove *calculus + extrinsic stains*
-take *impressions*
-make *custom whitening trays* for home use
-If DENTAL ACT permits, provide *in-office whitening*
Range of Carbamide Peroxide as an oxidizing agent - correct-answer - Range is
usually 10-22%
Concentration of Hydrogen Peroxide as a bleaching agent - correct-answer - 3%
Carboxypolymethelene - correct-answer - added to bleaching agent to *thicken
the gel*
--> helps gel *adhere to tooth surface*
--> *prolong* release of oxygen
CLINIC THEORY 2 MIDTERM EXAM
QUESTIONS WITH VERIFIED
SOLUTIONS
Extrinsic stains are always ____ - correct-answer - exogenous
T/F
Intrinsic are always endogenous - correct-answer - F
can be BOTH exogenous and endogenous
UHN for whitening - correct-answer - wholesome facial image
3 types of whitening toothpastes - correct-answer - 1) *Abrasive*
2) Has a *Bleaching Agent* - not recommended for long term use
,2|Page
3) Has *Titanium Dioxide* - covers extrinsic stains like a coat of paint, but DOES
NOT change internal tooth color
Commercial bleaching kits - correct-answer - mouth tray which is adjusted to the
client's teeth by the method of "boil and fit"
-with *oxidizing agent* placed in tray
-some kits have an *acidic pre-rinse*
T/F
Clients that use OTC bleaching products may neglect regular dental visits by self-
treating stain areas - correct-answer - T
T/F
The Council of Scientific Affairs of the ADA does not recommend any OTC
products and suggests that clients seek professional care to lighten teeth -
correct-answer - T
,3|Page
DH's role in bleaching - correct-answer - -educate patient on ramifications prior to
treatment
-determine *etiology* of stain
-determine *allergies*
-determine *client expectations*
-assess for *Contraindicating lesions* for whitening
-assess for *caries* and *defective restorations*
-assess tooth *sensitivity*
-evaluate *translucency* of teeth
-assess presence and extent of *recession*
-determine size and vitality of *pulp*
-rads
-percussion, thermal, electric pulp testing
-assess patient's *OSC*
-assist client in setting *realistic expectations*
--> use shade guide + photos
-assess for presence of *cracks*
, 4|Page
-remove *calculus + extrinsic stains*
-take *impressions*
-make *custom whitening trays* for home use
-If DENTAL ACT permits, provide *in-office whitening*
Range of Carbamide Peroxide as an oxidizing agent - correct-answer - Range is
usually 10-22%
Concentration of Hydrogen Peroxide as a bleaching agent - correct-answer - 3%
Carboxypolymethelene - correct-answer - added to bleaching agent to *thicken
the gel*
--> helps gel *adhere to tooth surface*
--> *prolong* release of oxygen
