Dental Sealants Exam Questions
with Verified Answers
Enamel that has been etched has what appearance when dry?
a. Shiny
b. Frosty
c. Wet
d. Slightly yellow - ANSWER-B - Frosty
Etched enamel appears frosty. It does not appear shiny, wet, or slightly yellow.
Properly placed dental sealants are ___% effective in protecting against the
development of caries in sealed surfaces.
a. 70
b. 80
c. 90
d. 100 - ANSWER-D - 100
Properly placed dental sealants are 100% effective in protecting against the
development of cavities in sealed tooth surfaces.
Sealant material should not be stored in proximity to ____-containing products.
a. acrylate
b. eugenol
c. sodium bicarbonate
d. Bis-GMA - ANSWER-B - Eugenol
Sealant material should not be stored in proximity to eugenol-containing products.
Sealant material contains acrylate resins. Sodium bicarbonate can be used to clean
fissures prior to the placement of sealant. Many current sealants are a form of
flowable composite derived from Bis-GMA.
Sealants are especially useful through the caries-active period, which is:
a. 0 to 3 years of age.
b. 3 to 6 years of age.
c. 6 to 15 years of age.
d. 15 to 21 years of age. - ANSWER-C - 6 to 15 years of age.
Pit-and-fissure sealants are especially useful through the caries-active period (i.e.,
ages 6 to 15 years) and may delay the need for an occlusal restoration unless a
proximal lesion develops.
Sealants are indicated for which areas?
a. Cervical one third of any tooth
b. Posterior but not anterior teeth
c. The smooth surfaces of teeth but not pits and fissures
d. Pits and fissures - ANSWER-D - Pits and fissures
Sealants are indicated for teeth with deep pits and fissures, preferably in recently
erupted teeth (i.e., less than 4 years). The rationale for this is that teeth continue to
mineralize following eruption and are most prone to decay immediately after
eruption. Occasionally they may be used for lingual pits in anterior teeth.
, Sealants are used in only ____% of low-income children.
a. 50
b. 75
c. 15
d. 30 - ANSWER-D - 30
Utilization of sealants is only about 30 percent; this high-risk group could benefit
greatly from sealants.
Self-cured dental sealants polymerize to a final set within approximately ___
seconds from the start of mixing the two components.
a. 30
b. 60
c. 90
d. 120 - ANSWER-D - 120
Self-cured sealants polymerize to final set within approximately 120 seconds (2
minutes) from the start of mixing the two components.
The first step in placing dental sealants is to _____ the surface.
a. etch
b. isolate
c. clean
d. prime - ANSWER-C - Clean
The first step in the sealant process is to clean the teeth thoroughly to remove any
plaque and debris from the occlusal surface. Etching is the third step. Isolating the
surface is the second step. Priming the surface is not a step in the sealant
procedure.
The highest risk period for decay occurs within the first ___ years of eruption.
a. 3
b. 5
c. 7
d. 9 - ANSWER-A - 3
The highest risk period for decay occurs within the first 3 years of eruption.
The retention of the sealant is obtained by etching the enamel with what?
a. Citric acid
b. Phosphoric acid
c. Eugenol
d. Pumice - ANSWER-B - Phosphoric acid
The retention of the sealant is obtained by etching the enamel with phosphoric acid,
to roughen it and open the pores in enamel for penetration of the resin sealant. Citric
acid is sometimes used to treat root surfaces during periodontal therapy, but it is not
used to etch teeth prior to placement of sealants. Eugenol is used in dental cement
for its soothing, obtundent qualities, but it is not used to etch teeth prior to the
placement of sealants. Pumice may be used to remove stain and prepare teeth for
placement of sealants, but it is not used to etch teeth.
Using a small round or needle-shaped bur or diamond rotary instrument prior to
placement of a dental sealant can allow for inspection for the presence of caries,
and...
with Verified Answers
Enamel that has been etched has what appearance when dry?
a. Shiny
b. Frosty
c. Wet
d. Slightly yellow - ANSWER-B - Frosty
Etched enamel appears frosty. It does not appear shiny, wet, or slightly yellow.
Properly placed dental sealants are ___% effective in protecting against the
development of caries in sealed surfaces.
a. 70
b. 80
c. 90
d. 100 - ANSWER-D - 100
Properly placed dental sealants are 100% effective in protecting against the
development of cavities in sealed tooth surfaces.
Sealant material should not be stored in proximity to ____-containing products.
a. acrylate
b. eugenol
c. sodium bicarbonate
d. Bis-GMA - ANSWER-B - Eugenol
Sealant material should not be stored in proximity to eugenol-containing products.
Sealant material contains acrylate resins. Sodium bicarbonate can be used to clean
fissures prior to the placement of sealant. Many current sealants are a form of
flowable composite derived from Bis-GMA.
Sealants are especially useful through the caries-active period, which is:
a. 0 to 3 years of age.
b. 3 to 6 years of age.
c. 6 to 15 years of age.
d. 15 to 21 years of age. - ANSWER-C - 6 to 15 years of age.
Pit-and-fissure sealants are especially useful through the caries-active period (i.e.,
ages 6 to 15 years) and may delay the need for an occlusal restoration unless a
proximal lesion develops.
Sealants are indicated for which areas?
a. Cervical one third of any tooth
b. Posterior but not anterior teeth
c. The smooth surfaces of teeth but not pits and fissures
d. Pits and fissures - ANSWER-D - Pits and fissures
Sealants are indicated for teeth with deep pits and fissures, preferably in recently
erupted teeth (i.e., less than 4 years). The rationale for this is that teeth continue to
mineralize following eruption and are most prone to decay immediately after
eruption. Occasionally they may be used for lingual pits in anterior teeth.
, Sealants are used in only ____% of low-income children.
a. 50
b. 75
c. 15
d. 30 - ANSWER-D - 30
Utilization of sealants is only about 30 percent; this high-risk group could benefit
greatly from sealants.
Self-cured dental sealants polymerize to a final set within approximately ___
seconds from the start of mixing the two components.
a. 30
b. 60
c. 90
d. 120 - ANSWER-D - 120
Self-cured sealants polymerize to final set within approximately 120 seconds (2
minutes) from the start of mixing the two components.
The first step in placing dental sealants is to _____ the surface.
a. etch
b. isolate
c. clean
d. prime - ANSWER-C - Clean
The first step in the sealant process is to clean the teeth thoroughly to remove any
plaque and debris from the occlusal surface. Etching is the third step. Isolating the
surface is the second step. Priming the surface is not a step in the sealant
procedure.
The highest risk period for decay occurs within the first ___ years of eruption.
a. 3
b. 5
c. 7
d. 9 - ANSWER-A - 3
The highest risk period for decay occurs within the first 3 years of eruption.
The retention of the sealant is obtained by etching the enamel with what?
a. Citric acid
b. Phosphoric acid
c. Eugenol
d. Pumice - ANSWER-B - Phosphoric acid
The retention of the sealant is obtained by etching the enamel with phosphoric acid,
to roughen it and open the pores in enamel for penetration of the resin sealant. Citric
acid is sometimes used to treat root surfaces during periodontal therapy, but it is not
used to etch teeth prior to placement of sealants. Eugenol is used in dental cement
for its soothing, obtundent qualities, but it is not used to etch teeth prior to the
placement of sealants. Pumice may be used to remove stain and prepare teeth for
placement of sealants, but it is not used to etch teeth.
Using a small round or needle-shaped bur or diamond rotary instrument prior to
placement of a dental sealant can allow for inspection for the presence of caries,
and...
