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Stack #4714499
| Question | Answer |
|---|---|
| What is the weakest but most esthetic? | Feldspathic |
| What should be bonded to enamel? | Porcelain |
| Define Translucency | Allows light to pass through, some light is reflected back out |
| Define Reflectance | surface may reflect light that hits it, amount influenced by surface texture/polish |
| Why do glass-based ceramics crowns look more lifelike rather than porcelain bonded/ metal crowns? | They're fluorescent |
| What is the process of cutting? | Milling |
| How thick should the metal where the porcelain is bonded be? | 0.3-0.5mm |
| What covers the silver color? | Opaque |
| What value/chroma does a bleached tooth have? | High value/Low Chroma |
| True or False: You should use dental unit light | False |
| What is the befit of combining porcelain and metal in a crown/bridge? | combines strength and esthetics |
| Describe the oxide layer | oxide layer is a chemical boding surface/ may be too thick |
| Reasons for porcelain failure | bonding failures and mechanical stress |
| Uses for All-ceramic indirect restorations | Dental crowns, bridges, Inlays, Veneers |
| Advantages and disadvantages for all ceramic restorations | Advantages: lifelike, high esthetics, biocompatible, no dark metal Disadvantages: brittle, low flexural strength than metal |
| Sintering | heating ceramic powder below its melting point to make a solid mass |
| Slip Casting | pouring a ceramic slurry into a porous mold to form a core |
| Heat Pressing | forcing a molten ceramic ingot into an investment mold under high pressure and temp |
| Firing | heating a ceramic material into a furnace to mature/ strengthen/ glaze it |
| Glazing | final firing process that melts a smooth, glossy surface, layer onto the restoration |
| Scanning | capturing 3D impressions of teeth/models using an optical device |
| Staining | painting metal oxides onto a ceramic surface to add natural color |
| Hue | the actual color group |
| Value | relative brightness/darkness *what patient notices most |
| Chroma | intensity of color |
| Over glazing | excessively high temp |
| Which glass-based ceramic is the most esthetic and also the weakest? | Feldspathic Porcelain |
| What etchant is used with porcelian? | Hydrofluoric acid |
| Which glass-based ceramic is the strongest? | Lithium Disilicate |
| 2 non glass based ceramics | Zirconia and Alumina |
| Difference between inlay and onlay | Inlay restores damage inside the cusp of the tooth Onlay covers and restores one or more broken cusp tips |
| Veneer | ultra thin shell of porcelain/ composite bonded directly to the facial surface |
| Crown | fully covers a single damaged tooth down to the gumline |
| Bridge | connected prosthesis that replaces one or more entirely missing teeth |
Created by:
isaah