Sealants Flashcards
Sealant Composition
Resin/Polymer mixture + Glass filler
Glass Filler characteristics
more resistant, radiopaque (visibility), releases fluoride
Indications for Sealants
children, newly erupted teeth, mod-high caries risk, incipient caries, deep p+f *adults insurance dictates
Groove
smooth based depression on occlusal surface. easily cleaned
Pit and Fissure
enamel fault that is a result of non-coalescence of enamel during formation -
Shapes: U, V, I
Contraindications
interproximal or occlusal caries, well coalesced p+f, tissue flap, allergy to methacrylate, isolation cannot be achieved
1st Generation Sealants
light polymerized - ultraviolet light *not manufactured
2nd Generation Sealants
autopolymerization = self cure
*little control over setting time
3rd Generation Sealants
photopolymerization = light cure
*control over working time
Filled Sealant content
resistance to attrition/abrasion, fluoride release, syringe delivery, low viscosity
White Pigment added =
titanium oxide -
accurate placement, bubbles/voids visible, visualization at recare
Air Polisher contraindications
composites, porcelain, cementum/dentin OR
respiratory complications, infectious disease, renal disease, diuretics/steroid use
Air Polisher technique
3-4mm from tooth, sweeping motion, 60º anterior, 80º posterior, 90º occlusal
Etchant components
37-50% orthophosphoric or phosphoric acid. Gel (not liquid).
Etchant effects
cleans, removes organic material, cleans micropores, improves enamel wettability, increases surface area, forms space between enamel rods.
Etch time
20 sec (ultraseal)
