Lecture 3 Flashcards
After 15 years children with sealants had how many surfaces that were sound?
-69%
After 15 years children with out sealants had how many surfaces that were restored?
-83%
T/F Bonded resin sealants are safe and effective
True
T/F Caries risk for sealed teeth that have lost some or all sealant does not exceed the caries risk for never-sealed teeth
True
When are sealants contraindicated?
- rampant caries
- Interproximal lesions are present
- Decay reaches the dentin
What are composite resin sealants composed of?
-Bis-GMA and other dimethacrylate monomers (TEGMA, UGDMA, HDDMA)
What filler particle is composite resin sealants composed of?
-Silica
T/F Composite resin sealants are a photoinitiator
True
What percent of fill is ultraseal XT hydro-ultradent?
54%
T/F Ultraseal XT hydro-ultradent is hydrophobic
False
-Hydrophilic
What type of sealant is considered a provisional sealant?
-Glass ionomer
What is silverdiamine sealant effective at?
-Inhibiting lesion progression
What does silverdiamine fluoride do on decay?
-Turns black
What does silverdiamine reduce?
- Dentinal hypersensitivity
- Reduce bacteria
- MMPs
T/F Silverdiamine can arrest carious lesions
True
What are ways to clean pits and fissures without removing enamel?
- Pumice
- Rotating dry bristle brush
If you remove enamel when cleaning pits and fissures to place sealants what are some consequences?
- May expose dentin
- More susceptible to caries if sealant is lost
What is the recommended etching time on enamel?
-20 seconds
What is the recommended acid etch percentages?
-30-50%
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
How do you isolate for placing sealants?
- Rubber dam
- Cotton rolls, absorbent shields, various suction adaptations
How many sealants need repair?
-Between 5 and 10%
What makes primary teeth different than permanent teeth?
- Thinner enamel and dentin
- Broader proximal contacts
- Dentition development and status
What do you use a 14A clamp for?
-Permanent molar
What do you use an 8A clamp for?
-Primary molar
T/F Primary teeth are smaller and more bulbous that permanent teeth
True
1st primary molars with mesial interproximal lesions are an indication for what?
-Stainless steel crown
What is the most frequent size of a SSC used in pedo?
-4
