Pit and Fissure Sealants Exam 3 Flashcards
Biggest sayin with pit and fissure sealants!!:)
Less is MORE
Enamel defect or fault that is the result of incomplete fusion of enamel
Pit and Fissure
Organic polymer that bonds to the enamel surface and protects the pits & fissures from bacterial activity
Sealant
Occlusal decay makes up approximately ___ % of decay in school aged children
90%
sealing the fissures with materials that lock into the irregularities
Obturation
drill and fill suspected areas
Restoration
using burs to make fissures that are not too deep and more accessible for cleaning
Eradication
Indications for Sealant Application
Deep pits and narrow fissures on occlusal surfaces Xerostomia Orthodontics Recently erupted teeth Incipient caries Snacking >3X/day Teeth free of interproximal caries Elevated risk for dental caries Total prevention program Heavy plaque Infrequent preventive care Head and neck radiation
Evidence Based Sealant Guidelines
American Academy of Pediatric Dentistry
ADA
Contraindications
Wide fossa – self cleaning Low caries risk Good dietary habits Restorations present Decayed teeth (evaluate radiographically for interproximal decay)
Success lies in the ability to ___ firmly and __ the pits and fissures
adhere
isolate
entrapment of material within pores and cavities
Mechanical Bonding
attraction between unlike molecules
Secondary Bond or physical bond
Factors Affecting Bonding
Wetting ability of adhesive
Greater adhesion takes place when the material is able to wet the surface of the adherend.
Viscosity – Ability of material to flow over surface. Low viscosity flows better.
Prevention of salivary contamination
Drying and isolation of surface
Armementarian
Rubber dam (ehh)
cotton rolls and holder
dry-angle/neodry
Isolite
Acid Etching: Removes the organic debris left after _____ cleaning
mechanical
Acid Etch: Increases bonding since the ____ bond is a weak bond
physical
Etched Enamel:
- Increases the __ ____ for bonding
- Enhances enamel ___ , increases the size of pores.
- surface areas
2. porosity,
Etchant CAUTION IS:
irritant to sot tissues, eyes, etc, patient and clinician must wear safety glasses
A good thing to do when before rinsing etch of tooth with your air water is to ….
suction the etch with HVE so no soft tissue is contacted
Dry Surface: Sealants are ____ sensitive
a. air
b. wet
c. technique
technique
Which step is most ctritical/most important factor in retention
Drying technique
When re-isolating teeth with dry cotton rolls what is good advice
DO NOT REMOVE WET COTTON ROLLS, AS THIS WILL CONTRIBUTE TO CONTAMINATING ETCHED SURFACE WITH SALIVA
the process by which sealants harden
POLYMERIZATION
Peroxide/amine
Self-curing
Auto-polymerization
Light activated
Light cured
Photo polymerization
Wear on sealants tends to uncover the ____ ends of the fissures
terminal
with ___ technique during placement sealants should last up to 5-10 + years
strict
Saliva occludes porosities and inhibits bonding. Re-etch with acid 10-20 seconds following saliva contamination.
Dry field
Sealants must be checked at each visit and repaired if defective
recare
