HF2: Types of Sealants
material of giomer sealants
combination product of glass ionomer and resin polymer materials
what does the slow-releasing fluoride in glass ionomer do
enhances caries resistance and remineralization
research indicates that ________ sealants are twice as wear resistant as _________ sealants
filled; glass ionomer
resin based - filled sealants: what does the filler do
increases bond strength, abrasion resistance and wear
resin based - filled sealants: viscosity of the sealant
is increased and flow into the depth of a fissure varies
which type is more effective in caries reduction and why
resin-based sealants due to their superior retention
resin based sealants
-autopolymerized - chemical or self cured -photopolymerized - light cured -filled -unfilled
glass ionomer sealants
-fluoride release -used in restorative dentistry as liners and bases -directly fuses with enamel -does not require acid etching -is not moisture sensitive
resin based - filled sealants: fillers
-glass -ceramic -quartz particles
classification of sealants
-glass ionomer -giomer -resin based
glass ionomer: research indicates
-it may interfere with development of strep mutans on its surface -it lacks strength -shows high rate of occlusal wear -the retention rate is not as good as resin-based sealant materials
resin based - unfilled sealants
-less resistant to wear -indicated when potential occlusal adjustments are expected, and low speed hand pieces are not available
nanotechnology
-look for the introduction of new sealant products that are being researched which may demonstrate an improvement in hardness and ease of application -latest innovation is the use of nanotechnology in dental composites -nanomaterials-nonofillers and nanohybrids are added to the composite material for strength and durability
giomer sealants
-new -fluoride-releasing -alkaline-releasing to buffer lactic acid -BPA-free -light-cured -utilizes a self-etching primer which eliminates a separate etching step
