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Restorative Dentistry
600 to 300 BC
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Extraction and Artificial Replacement.
Middle Ages to mid-1800s
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Improve denture teeth by firing them into porcelain.
1700s.
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Vulcanite (primary denture base)
1844
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Acceptable amalgam formula
1895
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first dental cements were introduced.
1900
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Synthetic Resins were introduced
1932
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Intro of the acid-etch sketch
1955
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Tensile-
pulls and stretches a material.
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Compressive-
pushes it together.
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Sheering-
tries to slice it apart.
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ADA Seal of Acceptance-
awarded for 5 years, provide data to support product safety, reevaluated if change is made, conduct clinical trials, show facilities are adequate, advertising standards, submit info and ingrediants.
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Flow-
plimable enough to be placed.
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Coefficient of thermal expansion-
the measurement of change in volume or length in relationship to change in temp.
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Hue-
dominant color (yellow or brown)
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Chroma-
strength of color
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Value-
light or dark it is.
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Elasticity-
ability of a material to recover its shape completely after deformation from an applied force.
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Viscosity-
ability of a liquid material to flow.
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Proportional Limit-
limit before deformation
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Microleakage-
leakage of fluid and bacteria cause by gaps that occure at the interface.
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Thermal conductivity-
rate which heat flows thru a material.
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Fatigure Failure-
a fracture resulting from repeated stresses that produce microscopic flaws that grow.
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Wetting-
ability of a liquid to flow over the surface.
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Virulence-
refers to the degree of the pathogenicity, or the strength of that organism in its ability to produce disease.
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Post-exposure Management-
explains exactly what steps the employee must follow ater the exposure.
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Chlorine dioxide-
fast acting but must be prepared daily. It is corrosive.
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Glutaraldehyde-
mostly used for a liquid sterilate, very toxic, smells terrible, 10 to 90 minute contact time.
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Ortho-Phthala-dehyde-
can stain, very little odor, 30 min contact time.
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Critical-
penetrates soft tissure or bone. Greater risk of transmitting, forceps, scalpels, chisels, scalers, burs.
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Semi- critical-
heat-tolerant. may be damaged by heat.
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Chemical Liquid steriliants-
used for plastic instruments. contact time is 10 hours.
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