denmat final Flashcards
list the agencies responsible for setting standards and specifications of dental materials
ADA
ISO
FDA
list the requirements necessary for a product to qualify for the ADA seal of acceptance
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list 3 types of biting forces
compressive
shearing
tensile
what are the tooth structures most ideal for; compressive
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what are the tooth structures most ideal for; shearing
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what are the tooth structures most ideal for; tensile
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define stress
amount of FORCE exerted from within an object
define strain
amount of CHANGE that the force has produced
define ultimate strength
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describe the effects of moisture and acidity on dental materials
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identify 5 job related health and safety hazards for employees in dental offices
exposures to; particulate matter mercury toxic effects of chemicals airborne contaminants biological contaminants
describe the basic infection control methods of dental materials in the treatment area
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explain how to use the amalgam spill kit
locate slow sweep motions to gather syringe to collect put in container dispose
describe the purpose of an impression
reproduce dental arches in negative form to make a model
list the various categories of impression materials
reversible/ agar
irreversible/ alginates
explain differences in various impression materials
reversible; cold= gels / warm= runny
list the supplies needed to make an alginate impression
alginate, water, tray(s), spatula, mixing bowl, scooper,
explain how supplies to make an alginate impression is used
alginate and water to mix with spatula in mixing bowl.
tray to load, set and get impression in mouth
differentiate among diagnostic cast, working cast, and dies
Diag; positive replica
Work; everyday, yellow stone
die; crown/bridge, harder material
describe the chemical and physical nature of gypsum products
large; porous/ weak
small; strong
chemical??
demonstrate tray selection for alginate impressions for a patient
premanufactured; plastic (perforated) metal (rim-lock with adhesive) full-upper full-lower half-right half-left anterior only must be large enough to fit all oral structures
demonstrate mixing alginate
consider working time watch color remove air press side of bowl observe smooth consistency
demonstrate loading
start at posterior and toward anterior
quickly
demonstrate seating the tray
set lower tray first stand in front of patient one side at a time upper tray set second stand behind PT ANT 1st POS 2nd
demonstrate removing the impression
snap out quickly, keep wet
describe infection control and disinfection techniques used when working with impressions strength
rinse with cool water
place into plastic bag
spray with disinfectant
explain the procedure for mixing and handling gypsum products to create diagnostic casts
spatulate material till smooth
pour the anatomic portion and MX and MN diagnostic casts
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pour the base portion of MX and MN diagnostic cast
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discuss the effects of acid etching on enamel and dentin
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describe the various types of composite resin restorative materials
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describe how fillers affect the properties of composites
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