| A | B |
|---|
| amine | activator |
| organic matrix | BIS-GMA |
| metal, composite, polymers,ceramics | 4 classes of dental materials |
| High noble metals contains | 60% noble elements |
| Class IV | proxmial surfaces anterior/incisal edge |
| properly clean dentures | in ultrasonic is minimum of 10 minutes |
| to stimulate remineralization | use fluoride |
| steps to lost wax casting | impression, die, wax pattern,invest, cast |
| hardness test | Knoop & Brinell |
| Class V | gingiva third or smooth surface of teeth |
| ADA three catogories of alloys | high noble, noble, base metal |
| fluorosis | ingestion of too much fluoride |
| noble elements include | gold, palladium, platinum |
| whitening the teeth can cause | sensitivity |
| a common etching material in sealants and composites | phosphoric acid |
| there are two types of sealant materials | filled and unfilled |
| three stages of polymerization | initiation, propagation, termination |
| composite bonding is acheived by | resin tags |
| what two materials are mixed to make an amalgam | alloy and mercury |
| polymerization reaction that gives off a by-product | condensation |
| chlorhexidine rinse has | substantivity |
| what metals are in amalgam | silver, tin, copper |
| base and catalyst mixed until | homogenous color is acheived |
| composites are a mixture of | polymers and ceramics |
| teeth indicated for sealants | deep pits and fissures |
| by adding 18.6 ml to gypsum | the chemical reaction will initiate |
| hybrids get their beauty from | microfills |
| corrosion | weakens the amalgam/irreversible |
| tarnish | reversible |
| microleakage | causes decay |
| the matrix in composite cause | shrinkage |
| examples of polymers | sealants, composites, whitening trays |
| crumbly amalgams | undertrituration |
| wet and sticky amalgams | overtrituration |
| cross-linking polymers | improves the quality of polymers |
| Class I cavity | posterior pit and fissures |
| galvanic shock | touching of dissimilar metals |
| easily polished composites | microfills |
| ZOE | temporary cement |
| anatomical portion of an impression | hard and soft tissue |
| what material has a soothing effect on the pulp | eugenol |
| 3 components of color dentistry | hue, value, chroma |
| GIC | release fluoride |
| calcium hydroxide (dycal) | pulp capping agent |
| positve replica | poured in plaster |
| negative replica | it isn't poured in plaster |
| CaSO4+2H20 | calcium sulfate dyhydrate |
| hydrophopic | water hating |
| hydrophilic | water loving |
| saliva | electric cell which cause galvanism |
| base | insulates the pulp |
| hemihydrate | equals the loss of water |
| composite set-up includes | etch, prime/bond, composite |
| water/powder ratio for plaster | 50ml/100g powder |
| water/powder ratio for green stone | 24ml/100g powder |
| water/powder ratio for buff stone | 30ml/100g [pwder |
| polymer entanglements | stronger polymer |
| positive reproduction | diagnostic cast, working cast, studey model |
| inelastic impression materials | ZOE, Impression plaster, Impression compound |
| Elastic impression materials | addition, condensation, polyether, polysulfied |
| stress | internal |
| strain | change in length or fracture |
| initial setting | loss of gloss |
| final setting | when tray can be removed after 45 minutes |
| cavity varnish | seals dentinal tubules |
| amalgamation | combination of mercury and amalgam alloy |
| gold | only metal that don't corrode |
| High noble must contain what % of Gold | 40% |
| a polymer is formed by | joining like monomers to form a long chain |
| cross linking polymers | improve the physical properties of the final product |
| Addition polymerization is initiated by | a free radical |
| stages of addition polymerization | initiation, propagation and termination |
| a heat processed denture differ from a chemical-cured denture | it is more porous |
| high impact resins are created by | addition of rubber to the acrylic |
| what is the effect on a denture if it is left on the nightstand over night | it will lose water and shrink |
| the metal of a partial denture will darken and corrode if | soaked in chlorine |
| the effectsf porosity has on acrylic denture | staining, microorganisms, weakens the acrylic |
| purpose of a pressure pot during polymerization of a chemical cured denture | increase strength, decrease porosity, decrease shrinkage |
| which type of hard liner has the best physical properties | laboratory heat-cured liner |
| long term liners are indicated | chronic soreness, severe soft tissue undercuts, sharp, knife-edge ridges |
| acrylic resins can be made soft and pliable by the | addition of plasticizers |
| Prosthesis | a device used for the replacement of missing teeth |
| short- term soft liners | improve tissue health, called a tissue conditioner, readapt to tissue, affected by some commericial denture soaks |
| over the counter denture liners short comings | may not reestablish proper occlusion, are porous, and promote the growth of yeast |
| infection control procedure | should be followed when a denture is transported to the lab and when it is received from the lab for delivery to patient |
| Iodophors | used to disinfect prothesis, immerse 15 minutes in a denture cup or plastic bag |
| thermal conductivity | the rate at which heat flows through materials |
| viscosity | the ability of a liquid material to flow |
| adhesion | the act of sticking two things togeher in dentistry |
| wetting | the ability of a liquid to wet or intimately contact a solid surface |
| poor wetting | water beading on a waxed car |
| Coefficient of Thermal expansion | the measurement of change during expansion and contraction |
| ADA seal | is designed to help consumers make informed decisions about the safety and efficiency of products |
| 1976 Medical Device Amendment | signed to give the FDA (food and drug adminstration) regulatory authority over medical and dental devices |
| Before mixing the alginate | fluff the container |
| load the maxillary alginate tray with one large increment | use a wet gloved finger to smooth the surface before seating the tray |
| When cleaning a patient's denture | line the sink with paper towels |
| During the fabrication of a white tray | you should blockout from premolar to premolar |
| When trimming a white tray | use fine scissors to trim tray so it extends over the teeth and gingiva with a scalloped appearance |
| When trimming a model the base cut should be | parallel to the occlusal plane |
| PMMA(Methyl methacrylate | liquid monomer |
