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23 Cards in this Set
- Front
- Back
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microleakage |
the seeping and the leaking of fluids and bacteria between the tooth/restoration junction or interface |
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post operative sensitivity |
caused by fluids and bacteria moving in and out of the interface between the restoration and the tooth |
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percolation |
repeated expansion and contraction of the teeth and restorations at different rates resulting in fluids being sucked in and pushed out at the margins of a restoration. |
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margins |
the jct of the tooth and the restoration that is clinically visible |
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acid etching |
a micromechanical bonding technique that was first used to retain pit and fissure sealants. Whats keeps the restoration in the tooth. |
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polycarboxylate cements |
use polyacrylic acid and zinc oxide. |
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glass ionomer cements |
use polyacrylic acid, but they include glass powder instead of zinc oxide |
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biofilm |
a coating that derives from organisms, both large and small. |
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adhesive failure |
if the adhesive came off cleanly then the break occurred at the interface. |
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enamel tags or micropores |
acid that creates a microscopically rough enamel surface. It is the "roughened surface" |
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cohesive failure |
if the failure occurred inside the bonding material the break is called a cohesive failure. |
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orthophosphoric acid |
the acid that is applied which is typically 37% orthophosphoric acid applied for 15-30 seconds |
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enamel bonding resin |
the "adhesive" the low viscosity resin. "wets the etched surface well" |
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dentinal bonding |
micromechanical bonding and secondary atomic bonds. Bonds to dentin and enamel? |
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primers |
the secondary step, they are low viscosity and are much more hydrophilic. improves the flow of the wet surface. |
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resin tags |
resin material that is locked in the dentinal tubules |
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hybrid layer |
composed of resin and decalcified dentin. most likely involved 2ndary bonding |
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adherent |
the surface |
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adhesive |
micromechanical or chemical. wets the surface |
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apply primer |
low viscosity resins. they are more hydrophilic that other resins, and so it increasing wetting |
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enamel tags |
the roughened surface |
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smear layer |
debris from being cut with a dental burr |
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:) |
behappy |
