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PA EFDA Exam Prep Questions with 100% Correct Answers |Verified
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PA EFDA Exam Prep Questions with 100% Correct Answers |Verified
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PA EFDA Exam Prep Questions with 100%Correct Answers |Verified
Amalgam scrap - ✔✔Hazardous waste
Amalgam scrap - ✔✔Designate a dry air tight and labeled container for unused leftovers of
this material to be stored for recycle
Trituration - ✔✔The process by which mercury and the alloy powder are mixed
Amalgamation - ✔✔Another name for trituration
Overmixed or over triturated amalgam will look - ✔✔Soupy
Under mixed or under triturated amalgam will look - ✔✔Will be Crumbly
Trituration of amalgam - ✔✔Always read the manufactures instructions to get a perfect mix
Amalgam restoration is placed - ✔✔In increments
Carvers - ✔✔Used to gain proper contours
Burnishers - ✔✔Used to smooth and polish irregularities
Articulating paper - ✔✔Used to check occlusion
,Condensers - ✔✔Also called pluggers
Condenser - ✔✔Used to pack amalgam filling material into cavity preparation
Condenser - ✔✔Hammer like working end is large enough to compress soft amalgam
Carvers - ✔✔Have sharp cutting edges that are used to shape or form or cut to the anatomy
into amalgam restoration's
Hollenback carver - ✔✔Design for carving in between interproximal to the services
Discoid-cleoid - ✔✔Used on occlusal surfaces to carve
Acorn carver - ✔✔Used to quickly carve basic anatomy on a Occlusal surfaces
Mechanical - ✔✔Any push or pull motion creates force stress and strain
Force - ✔✔Creates stress
Stress - ✔✔Is the reaction within the material
Strain - ✔✔The actual change in the material
Tensile stress - ✔✔Pull and stretch
Compressive - ✔✔Push
, Shear - ✔✔Sliding
Creep - ✔✔Time-dependent strain or deformation that is produced by stress
Thermal - ✔✔Changes in temperature
Creep - ✔✔Black look around amalgam caused by microleakage can cause an amalgam
restoration to extend out of the cavity preparation can cause marginal breakdown
Electrical - ✔✔Currents in the mouth also referred to as galvanic shock
Galvanic shock - ✔✔Occurs when dissimilar metals in the mouth such as silver amalgam
restoration is against gold restorations acted like a battery and apon contact conduct an
electrical current resulting in pain this occurs especially when the amalgam is newly placed
Corrosive - ✔✔The gradual distraction of material usually metal by chemical reaction with its
environment
Lathe cut alloy (conventional) - ✔✔The cutting rate is precisely controlled to maintain the
desired average particle size and size distribution.
Spherical alloy particles - ✔✔They are around and require less mercury then lathe cut alloys
because this powders particles have a smaller surface area per volume then do the lathe cut
alloy particles
Mercury - ✔✔It is used in the mixing process to form the amalgam restoration
Mercury - ✔✔It is a metal in liquid form used to wet dry alloy particles upon condensing this
rich layer rises to the surface and is carved off or aspirated from the restoration by the assistant
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