DASLE MN EVALUATION EXAM 2025/2026 QUESTIONS
AND ANSWERS RATED A+
✔✔Which are etched longer, permanent or primary teeth? - ✔✔Primary teeth because
they are stronger and teeth with fluorosis
✔✔What is the composition of the etching material? - ✔✔37% phosphoric acid (35-
47%)
✔✔What is the best isolation technique when applying sealants? - ✔✔dental dam
✔✔Describe characteristics of an etched surface. - ✔✔Dull
Frosted
Chalky
✔✔List contra-indicators for sealant placement. - ✔✔Occlusal surface is smooth and
easy to clean
Decay on occlusal surface
Decay on interproximal surface
Restoration already in place
✔✔List the indications for sealant placement. - ✔✔Occlusal surfaces with pits & fissures
Bu pit of mandibular molars
Li groove by cusp of Carabelli
Cingulum pits
Patient with high incidence of caries
✔✔How is liquid etch applied? What can happen if done incorrectly? - ✔✔Dabbed
continuously
No rubbing/burnishing
Damages the etched enamel rods
✔✔How is gel-etch applied? - ✔✔Put in place and wait 30 seconds (15-60 seconds)
Does not need to be continuously applied
✔✔How far should the light tip be placed away from the sealant during curing? - ✔✔1-2
mm without touching the sealant
✔✔What is another name for etch? - ✔✔conditioner
✔✔Is sealant retention better on maxillary or mandibular teeth? - ✔✔Mandibular teeth
because of easier placement
✔✔What is the chemical composition of the sealant material? - ✔✔Bis-GMA
,Dimethacrylate (acrylate resins can be a known allergen for some patients)
✔✔If contamination occurs during the sealant procedure, how long does the tooth need
to be re-etched? - ✔✔for 15 seconds - If there is a bubble in the sealant after curing and
before isolation has been removed you can just add sealant and cure
✔✔What happens to areas of enamel that are etched but not covered with sealant
resin? - ✔✔Remineralization begins within 24 hours of exposure to calcium phosphate
salts in saliva
✔✔What is the primary cause for sealant failure? - ✔✔Moisture contamination during
placement
✔✔What is the shelf life for most sealant material stored at room temperature? - ✔✔18-
36 months
✔✔What product should not be stored next to sealant material? - ✔✔eugenol
✔✔What material should not be used when cleaning the tooth prior to sealant
placement? - ✔✔Oil or material containing fluoride
✔✔How long can a properly placed sealant last? - ✔✔5-10 years
✔✔Most sealant failures occur within what timeframe? - ✔✔3-6 months
✔✔When checking articulation (the bite) after placement, what should be done if the
sealant is high? - ✔✔Reduce the high spot with the appropriate bur (LDA can do this)
✔✔Which of the following materials used for sealants contains fluoride and does not
require the use of an etching or bonding agent? - ✔✔glass ionomers
✔✔The initial polymerization of self-curing pit and fissure sealants occurs within what
amount of time from the start of the mixing process? How about the final set? - ✔✔1
minute at initial and 2 minutes at final
✔✔Why would unfilled resin be preferred for use over filled resin sealant material? -
✔✔They do not have to require occlusal adjustment after placement (will wear down on
their own)
✔✔Which teeth most frequently lose their sealants? - ✔✔2nd molars
✔✔What is the curing time per surface for a light cured sealant resin? - ✔✔light cure for
20 secs
, ✔✔How long should the etch be in contact with the tooth during sealant placement? -
✔✔book: 20-30 secs
15-60 secs
✔✔what type of polishing agent is recommended for use to polish hybrid composite and
resin restorations? - ✔✔aluminum oxide paste
✔✔what type of polishing agent is recommended for use to polish porcelain restoration?
- ✔✔sapphire / diamond polishing paste
✔✔what is the maximum amount of time that a tooth should be polished to reduce tooth
abrasion? - ✔✔3-5 seconds
✔✔will mechanical polish increase the benefits of a fluoride treatment? - ✔✔no
✔✔What is the purpose of the periodontal dressing (5)? - ✔✔Protects surgical area
Prevents post-op bleeding
Supports mobile teeth during healing
Helps form/mold new tissue
Provides patient comfort
✔✔Which type of periodontal dressing can cause an allergic reaction? - ✔✔Hard pack
(Eugenol) Can be mixed and stored for later use
✔✔What is the brand name of the non-eugenol dressing (soft pack)? - ✔✔Coe-pak (soft
pack) Cannot be mixed and stored for after use
supplied in 2 tubes (one for base material and the other for accelerator)
✔✔What is placed on the gloves during manipulation and placement of the periodontal
dressings to avoid sticking? - ✔✔saline solution
✔✔Which periodontal pack looks the most like the natural gum tissue? - ✔✔Light cured
(Barracaid)
Light cure for 10 seconds/tooth
✔✔What instrument is used to adapt the dressing interproximally during placement? -
✔✔Plastic instrument
✔✔What instrument is used for the removal of a periodontal dressing? - ✔✔spoon
excavator, explorer, surgical hoe
AND ANSWERS RATED A+
✔✔Which are etched longer, permanent or primary teeth? - ✔✔Primary teeth because
they are stronger and teeth with fluorosis
✔✔What is the composition of the etching material? - ✔✔37% phosphoric acid (35-
47%)
✔✔What is the best isolation technique when applying sealants? - ✔✔dental dam
✔✔Describe characteristics of an etched surface. - ✔✔Dull
Frosted
Chalky
✔✔List contra-indicators for sealant placement. - ✔✔Occlusal surface is smooth and
easy to clean
Decay on occlusal surface
Decay on interproximal surface
Restoration already in place
✔✔List the indications for sealant placement. - ✔✔Occlusal surfaces with pits & fissures
Bu pit of mandibular molars
Li groove by cusp of Carabelli
Cingulum pits
Patient with high incidence of caries
✔✔How is liquid etch applied? What can happen if done incorrectly? - ✔✔Dabbed
continuously
No rubbing/burnishing
Damages the etched enamel rods
✔✔How is gel-etch applied? - ✔✔Put in place and wait 30 seconds (15-60 seconds)
Does not need to be continuously applied
✔✔How far should the light tip be placed away from the sealant during curing? - ✔✔1-2
mm without touching the sealant
✔✔What is another name for etch? - ✔✔conditioner
✔✔Is sealant retention better on maxillary or mandibular teeth? - ✔✔Mandibular teeth
because of easier placement
✔✔What is the chemical composition of the sealant material? - ✔✔Bis-GMA
,Dimethacrylate (acrylate resins can be a known allergen for some patients)
✔✔If contamination occurs during the sealant procedure, how long does the tooth need
to be re-etched? - ✔✔for 15 seconds - If there is a bubble in the sealant after curing and
before isolation has been removed you can just add sealant and cure
✔✔What happens to areas of enamel that are etched but not covered with sealant
resin? - ✔✔Remineralization begins within 24 hours of exposure to calcium phosphate
salts in saliva
✔✔What is the primary cause for sealant failure? - ✔✔Moisture contamination during
placement
✔✔What is the shelf life for most sealant material stored at room temperature? - ✔✔18-
36 months
✔✔What product should not be stored next to sealant material? - ✔✔eugenol
✔✔What material should not be used when cleaning the tooth prior to sealant
placement? - ✔✔Oil or material containing fluoride
✔✔How long can a properly placed sealant last? - ✔✔5-10 years
✔✔Most sealant failures occur within what timeframe? - ✔✔3-6 months
✔✔When checking articulation (the bite) after placement, what should be done if the
sealant is high? - ✔✔Reduce the high spot with the appropriate bur (LDA can do this)
✔✔Which of the following materials used for sealants contains fluoride and does not
require the use of an etching or bonding agent? - ✔✔glass ionomers
✔✔The initial polymerization of self-curing pit and fissure sealants occurs within what
amount of time from the start of the mixing process? How about the final set? - ✔✔1
minute at initial and 2 minutes at final
✔✔Why would unfilled resin be preferred for use over filled resin sealant material? -
✔✔They do not have to require occlusal adjustment after placement (will wear down on
their own)
✔✔Which teeth most frequently lose their sealants? - ✔✔2nd molars
✔✔What is the curing time per surface for a light cured sealant resin? - ✔✔light cure for
20 secs
, ✔✔How long should the etch be in contact with the tooth during sealant placement? -
✔✔book: 20-30 secs
15-60 secs
✔✔what type of polishing agent is recommended for use to polish hybrid composite and
resin restorations? - ✔✔aluminum oxide paste
✔✔what type of polishing agent is recommended for use to polish porcelain restoration?
- ✔✔sapphire / diamond polishing paste
✔✔what is the maximum amount of time that a tooth should be polished to reduce tooth
abrasion? - ✔✔3-5 seconds
✔✔will mechanical polish increase the benefits of a fluoride treatment? - ✔✔no
✔✔What is the purpose of the periodontal dressing (5)? - ✔✔Protects surgical area
Prevents post-op bleeding
Supports mobile teeth during healing
Helps form/mold new tissue
Provides patient comfort
✔✔Which type of periodontal dressing can cause an allergic reaction? - ✔✔Hard pack
(Eugenol) Can be mixed and stored for later use
✔✔What is the brand name of the non-eugenol dressing (soft pack)? - ✔✔Coe-pak (soft
pack) Cannot be mixed and stored for after use
supplied in 2 tubes (one for base material and the other for accelerator)
✔✔What is placed on the gloves during manipulation and placement of the periodontal
dressings to avoid sticking? - ✔✔saline solution
✔✔Which periodontal pack looks the most like the natural gum tissue? - ✔✔Light cured
(Barracaid)
Light cure for 10 seconds/tooth
✔✔What instrument is used to adapt the dressing interproximally during placement? -
✔✔Plastic instrument
✔✔What instrument is used for the removal of a periodontal dressing? - ✔✔spoon
excavator, explorer, surgical hoe
