Pit and Fissure Sealants - Taylor Flashcards
a pit and fissure surface on a permanent first molar is ______ times more likely to be carious or restored after 15 years (than what? I am not sure, the slides didn’t say)
7.5
T/F Carious risk for teeth that have lost some or all of the sealant is greater than for teeth that were never sealed.
False - it found that the risk does not increase if the teeth have lost some or all of the sealant
therefore, it has been recommended to provide sealants to children even if follow-up cannot be ensured
if patients have well-coalesced pits and fissures are sealants a cost effective choice or a non cost effective choice
non cost effective
when are sealants contraindicated
when there is rampant caries like interproximal caries
T/F glass ionomer is considered a provisional sealant
True because they come off easily
When do we put on glass ionomer sealants?
when isolation is not easily achievable and then when isolation is easier we put on resin
silverdiamine sealant is effective at what?
inhibiting carious lesion progression
what are 2 downsides to silverdiamine sealants
they require follow-up care
they stain the carious lesion black.
What effect do silverdiamine sealants have on bacteria and MMPs?
Can it be used as a diagnostic tool?
they reduce bacteria and MMPs
yes they are a great diagnostic tool
T/F sealants need to be reevaluated after placement for effectiveness
True
what is the recommended % of acid in the etchant?
what is the recommended time of etching?
30-50% phosphoric acid
etch for 20 seconds
after you etch, you should wipe the enamel with a cotton palette T/F
false, it destroys the retentive enamel you just created with the etch.
enamel on primary teeth is more resistant to etch than permanent teeth. T/F
True
why should you not use pumice or aluminum oxide to clean the teeth before you place sealants?
because they leave behind particulate matter in the deep recesses of the pits.
T/F additional acid etching is needed when the enamel is prepared with aluminum oxide air abrasion or laser for adequate resin bonding to enamel
True
a combination of restoration of carious occlusal surfaces as well as sealing the remaining pits and fissures is highly effective. T/F
true
after 8-10 years one study found that _____% of sealed surfaces remained caries free
85%
what percent of sealants need repair?
5-10%
T/F self-etch bonding agents provide as good retention as acid etch technique sealants
False - they may not provide the same level of retention
characteristics of glass ionomers
considered a provisional sealant continuous fluoride release deeply fissured primary molars Wet field Partially erupted molars less shrinkage during setting
Considerations when sealants may not be cost effective
well-coalesced pits and fissures
caries unlikely
Poor patient cooperation
T/F Enamel rich with fluorhydroxyapatite and primary teeth
may be resistant to etching and may need to be exposed for longer periods
true
T/F aggressive use of fissure opening may remove the last enamel layer over dentin at the bottom the fissures and become more susceptible to caries if sealant is lost
True
T/F resin based sealant have higher retention rates compared to glass ionomer sealants
T/F glass ionomer sealants exhibit good short term retention
true
true
rubber dam characteristics
helps child anxiety maintain clear working field controls lips and tongue saves time reduces margin of error better detection of pulp exposure and vitality
