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30 Cards in this Set
- Front
- Back
What type of indirect restorative material combines strength, translucence, and the ability to match the natural tooth? |
Porcelain |
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What type of dental cement is composed of zinc oxide with a small amount of magnesium oxide powder and mixed with a solution of phosphoric acid in water? |
Zinc phosphate |
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When the oral fluids act as a carrier between two metals that are present in the mouth and cause of small electrical shock, it is called? |
Galvanism |
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A liquid catalyst for the self curing tray resin is a? |
Monomer |
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What soft wax is used to form a wax box around an impression prior to pouring it with gypsum? |
Boxing wax |
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What is the physical or chemical forces or attraction that hold unlike substances together? |
Adhesion |
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The ratio of water to powder for stone is? |
Less than plaster |
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The ability of a material to flow over a surface is? |
Wetability |
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What type of stress and strain pulls and stretches a material? |
Tensile |
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Which materials have rubber like qualities, are used for areas that require precise duplication, and are not as affected by atmospheric changes? |
Elastomeric impression material |
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Any push or pull on an object defines? |
Force |
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Also known as adhesives, these materials are used to improve the retention between the tooth structure and the restoration. |
Bonding agent |
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What irreversible hydocolloid impression material can be used when less accuracy is needed? |
Algenite |
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What type of direct restorative material is placed in a thin layer on the walls and floor of the cavity preparation and protects the pulp from bacteria and irritants? |
Liner |
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In dentistry, gold, palladium, and platinum metals used for cast restorations are classified as? |
Noble material |
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What is the average biting force on the molars for a person with natural dentition? |
130-175 |
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What is the ratio of water to powder for plaster? |
50 milliliters of water to 100 grams of powder |
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What type of gypsum material is the weakest? |
Impression plaster |
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Which custom trays require equipment with a frame that holds the sheets directly under a heating element and when they are softened, drops the sheet onto the cast as the material is drawn to the model? |
Vacuum formed |
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The ability of a material to withstand compressive stresses without fracturing is? |
Malleability |
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These elastomeric impression materials have high accuracy, no shrinkage, dimensional stability, high tear resistance, no taste, and no odor. |
Silicone |
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Most of these types of waxes have a certain degree of hardness, toughness, resistance to flaking, and ability to achieve smooth surface. |
Pattern wax |
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Orthodontic stone is a mixture of laboratory plaster and? |
Laboratory stone |
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What classification of impressions are taken by the dentist or dental assistant to produce a reproduction of occlusal relationship of the maxillary and mandibular teeth when the mouth is occluded? |
Bite registration |
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What broad group encompasses the hard wax used to crown and bridge casting? |
Pattern wax |
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A type of wax that is also known as periphery or bending wax, it can be molded to most surfaces with additional heat. |
Utility |
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Single paste systems that are light cured and release fluoride |
Compomers |
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Place between tooth and restoration to protect pulp from chemical irritants and temperature changes |
Base |
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Can occur when the gold restoration in one arch contacts the amalgam restoration in the opposing tooth in the opposite arch. |
Galvanism |
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Impression material that is stiffer than many other materials and can be used for custom tray and syringe |
Polyether |