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Related Flashcards
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Cards In This Set
| Front | Back |
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Which teeth do you place sealants on
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Permanent molars 1&2
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Purpose of sealants
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To prevent caries by providing a protective coat over the occlusal surfaces of posterior teeth
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Why must resins used in sealants have a low viscosity
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To flow into pits and fissures
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Sealant components are
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- monomer
- initiator - accelerator - opaque filler - reinforcing filler |
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Monomer of sealants consists of
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BIS-GMA w.diluent to facilitate flow into pits and fissures
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Initiator of sealants consists of
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Benzoyl peroxide- self cured
diketone- light cured |
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Accelerator in sealants consists of
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Amine- self cured
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Opaque filler in sealants consists of
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1% titanium dioxide to make material detectable on tooth surfaces
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Reinforcing filler in sealants
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Generally not added for a restoration
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Sealant rxns are
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Free radical rxn
like composite restorations |
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What physical property wets acid etched tooth structure the best
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Low viscosity sealants
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Mechanical properties of sealants
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- wear resistance isnt too great
- protect sealants when using prophy jet |
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Cinical efficienty of sealants
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100% effective if retained in pits and fissures
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Uses for waxes
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- registering of tooth or soft tissue positions
- creating restorative patterns for lab fabrication - aiding in lab procedures |
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Name one use of a wax
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Bite registration used to form a pattern for the occlusion of opposing models
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