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52 Cards in this Set
- Front
- Back
- 3rd side (hint)
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3 main cement
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1. Fleck zinc phosphate
2. Glass ionomer 3. Durelon (polycarboxylate) |
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Pattern wax
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-are the hardest wax
- have a certain degree of hardness, toughness, resistant to flaking & ability to smooth surface Ex. 1. Baseplate: hard wax heated to make denture 2. Inlay wax: dark colored stick, used on die, create metal/porcelain restoration |
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Mixing gypsum
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Slowly mix powder into water
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The level of the dental material reaction to the change acidity levels determine use in oral cavity
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True
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Vibrator machine
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-looks like a weight machine
-remove air from mixed plaster and stone -aids in flow of material when pour up a diagnostic model |
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Copal varnishes
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-placed under amalgam restoration (silver filling)
-organic solvent used only under metals -non acid, non irritant, prevent micro leakage, insoluble |
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Liner
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-are often called low strength base
- type of direct restoration material placed in a thin layer on walls, floor of cavity prep - protect pulp from bacteria & irritant Ex: capal varnish |
Strong base: IRM & dycal
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IRM
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- intergrated restorative materials
-strong base -temporary cement base |
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Strong base
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Dycal & IRM
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Galvanism
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- 2 different metal in mouth can create a small electrical shock
-when oral fluid act as carrier between 2 metals presence in mouth & cause a small electrical shock |
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Strongest to weakest types
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Type 1: strongest
Type 2: strong Type 3: weak |
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Universal varnish
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- doesn't have organic solvent & can be use on all restoration
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Assistant prep restore tooth for dentist
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-prep walls, lines & angle
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Shearing
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-type of stress & strain
-slide one parts of material to another part -ex. Bruxism (grinding teeth) |
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Tensile
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-type of stress & strain
-pulls & stretches a material Ex. Braces bands |
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Modules of elasticity measure
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The stiffness of a material
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How the hold bottle a
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When dispensing liquid for cement hold bottle/dispenser (syringe) vertically to mix on glass slab/pad
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Calcium hydroxides
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Product name: dycal
-helps tooth to promote a 2nd dentin to form -strong base |
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Composite
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-are white fillings
-comes in as paste package system -are light -cured, self cure, dual cure -inexpensive material Not very strong odor, shrinkage/exothermic reaction -excellent color stability and strong material cuz not made of plastic |
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Light cured
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-composite (white fillings)
-liner (10-20sec to cure) |
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Ideal level
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-ideal level to put small fillings
-ideal level of cavity prep that does not involve pulp but is thru enamel & dentin |
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Alloy
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-2/ more metals combine
-An amalgam fillings ingredient |
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Final impression
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-provide dentist and lab tech. Essential info. Needed for creating indirect restoration partial/full dentures & implant prosthesis ( crown over implant)
-needs to be perfect in order to be made accurately |
Indirect restoration: inlay & inlay
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Under consist force
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-cause certain material change & deform
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Alignate
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-aka irreversible hydrocolloid impression
-less accurate impression made -2 types of alignate material •reversible and irreversible -1min working time for regular set materials -stored under 120•F |
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Porcelain
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-a direct restoration material
-strong strength, translucence & ability to match natural tooth -expensive white filling that last longer |
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Bonding agents
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Aka adhesive material
-to improve retention between tooth structure & the restoration |
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Amalgam
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-Ingredients: tin, zinc, copper, mercury, & alloy
-Never use magnesium -combo of mercury & alloy |
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Amalgamation
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-a Chemical reaction occur between alloy & mercury to form silver amalgam
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Force
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It's pushing /pulling on an object
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Direct restoration material
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-liner
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Glass ionomer
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-Most often used in nonstress bearing restoration where ecstatic are not critical
- not used in front teeth |
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Silicone
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-an elastomeric impression material with high accuracy, no shrinkage, dimensional stability, tear resistant, tasteless, & odorless
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Ratio for
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Powder:water for stone is less than plaster
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Orthodontic stone
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-a mixture of type 2 ( model/lab plaster) & type 3 ( lab stone)
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Processing wax
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-boxing wax: soft box used to form wax box around impression prior to pouring it with gypsum
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Vacuum
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-are used for costume tray
-the equipment frame holds sheet directly under heat element & when soften drops the sheet onto the cast as a material is drawn to model |
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Zinc phosphate
(Flecks) |
-permanent cement
-crowns, bridges, inlay, orthodontic bands & brackets -an insulating base -powder:water=chemical reaction & heat released (exothermic) |
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Zinc oxide Eugenol
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-ZOE
-type 1 -type 2 •IRM =intermediate restoration material -temporary cement & restoration -crown, inlay, onlay, & bridges -low strength base -periodontal dressing, root canal sealer |
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Reinforced zinc oxide eugenol
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-permanent cement & temporary restoration
-insulating base -crowns, bridges, inlays & inlays -light cured -stronger, insoluble, & more adhesive to tooth than glass ionomer |
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Poly carboxylate
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-durelon
-permanent cement - crowns, bridges, inlays, onlay, orthodontic band & bracket - insulating base -powder:liquid / capsule |
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Calcium hydroxide
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-dycal
-low strength -cement base, cavity liner, root canal filling |
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Syneresis
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-an impression loses water due to heat, dryness/exposure to air and causes shrinkage
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Imbibition
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-impression takes on additional water and causes swelling (dimensional enlarge)
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Gelatin time
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-Time from when mixing alignate powder w/water til completely set
-time from which alginate material is mix w/water til it's completely set |
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Reversible hydrocolloid
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-aka agar agar
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Elastomeric impression
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1.polyether: impression material that is stiffer than other material, can be use for custume tray & syringe
2.polysulfide: aka rubber base 3.silcone: rubber like, precise duplicate |
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Gypsum
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-are stone
Types: 1. Type 1 impression plaster 2. Type 2 model & lab plaster 3. Type lll. lab stone 4. Type lV die stone 5. Type V. High strength, high expansion die stone 6. Orthodontic stone is a combo of type lll (model/lab plaster) & type lll (lab stone) |
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Group of dental wax
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1. Pattern
2. Processing 3. Impression |
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Utilize wax
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-Holds 2 fracture pieces together til can be repair to sticky wax
-adhere to a # of surfaces such as metal, gypsum, porcelain |
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Thermal conductivity
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Is ability of material to transmit heat
-placed in layers over the pulp to protect from thermal changes |
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Corrison
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Result of chemical/ electro chemical attack oral environment in pure metal
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