12086800
Description
Flashcards by kari moreland, updated more than 1 year ago
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Created by kari moreland
over 6 years ago
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| Question | Answer |
| Abrassion | Wearing away or removal of material by the act of rubbing, cutting or scraping. |
| Abrasive | A material composed of particles of sufficient hardness and sharpness to cut of scratch a softer material when drawn across the surface. |
| Finishing | A procedure used to reduce excess restorative material to develop appropriate occlusion and contour. |
| Polishing | A procedure that produces a shiny, smooth surface by eliminating fine scratches, minor surface imperfections, and surface stains using mild abrasives. |
| Mohs’ hardness scale | Ranks materials by their relative abrasion resistance |
| Loose abrasive | powders and pastes for finishing, polishing & cleaning |
| Bonded abrasive | Abrasive particle uniformly incorporated to form device (Disk, cup, brush, wheel) |
| Coates abrasive | Attached to rotary disc or handheld finishing strip |
| Diamond | Hardest known substance |
| Pumice | volcanic silica, loose abrasive, and component of many prophy pastes |
| what restorations should not be polished sooner than 24 hours after they are placed | Amalgam |
| what restorations are finished and polished as part of the restorative procedure | Composite |
| How is intermediate finishing accomplished? | With flexible discs, cups and strips. |
| Margination | The process of removing excess restorative material to bring the restoration flush with the tooth |
| Porcelain | Resistant to stain - prophy paste may scratch porcelain glaze |
| What is used to contour, finish, and polish the surfaces of restorations | Abrasive agents |
| Tin oxide | Extremely fine, used as final polishing agent, powder-water/glycerin mix |
| Cemented Margins | Margins on resin-bonded porcelain restorations are more susceptible to staining because of the properties of the resin cements |
| Air Polishing | The use of air to propel very small microparticles as a replacement for rotary cutting and polishing instruments has gained much popularity |
| Aresols | Created when a rotary device and moisture are used |
| benefits of a properly finished and polished restoration | -Decreased biofilm retention -Resistance to tarnish/corrosion -Increased longevity of the restoration -Decreased attrition of natural tooth surfaces during chewing -Improved esthetics -Improved health of surrounding tissue |
| Composites are stained by? | Coffee, tea, wine, tobacco. |
| How do you clean dentures? | The use of a toothbrush with water and a mild cleansing agent is sufficient to remove most plaque, surface stains, and food debris from removable prosthetic appliances |
| How is final polishing accomplished? | With a sub-micron aluminum oxxide polishing paste applied to the tooth with soft cups or felt pads. |
| MI paste | Contains amorphous calcium phosphate with Recaldent. This means that the teeth can actually remineralize and repair |
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