Dental Materials 164 Word Scramble
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Question | Answer |
Corrosion | The roughness and pitting of a metal alloy due to chemical attack, contamination,etc |
Wetting | The ability of the liquid to flow easily over the surface and to come into contact with all small roughnesses present. |
Ductility | The ability of a material to withstand permanent deformation under a tensile load without rupture. |
Malleability | The ability of a material to withstand permanent deformation under compressive load without rupture. |
Linear Coefficient of Thermal Expansion | The increase in length of a material, per unit length, when the temperature is increased 1° Centigrade. |
Adhesion | The force which causes attraction between unlike molecules. |
Exothermic | A chemical reaction that gives off (releases) heat. |
Soluble | Able to dissolve influence. |
Microleakage | When fluids, microorganisms, and debris from the mouth penetrate the outer margin of the restoration and progress down the walls of the cavity preparation. |
Mechanical Retention | How a material is held in place by means such as the shape of the cavity preparation, etching the surface, or placing retentive grooves. |
Brittleness | The property of being easy to break or rupture. |
Force | Any push or pull on matter. |
Galvanism | Small currents created whenever two metals are present in the oral cavity. |
Hardness | The resistance of a material to indentation or penetration. |
Physical condition of the oral cavity which need consideration when a restoration is being placed include: | The acidity (pH) in the mouth, which may cause metallic restorations to tarnish or corrode and nonmetallic restorations to deteriorate. Themperature fluctuations. Biting forces during mastication. |
TRUE | A liquid that does not flow easily and is the consistency of a thick or heavy syrup. A high viscous adhesive will not flow easily and will not be as effective in wetting a surface as would an adhesive of lower viscosity. |
The color blue on the chemical warning lable indicates... | Health hazard |
TorF? The National Fire Protection Association's color and number method is used on chemical warning labels. | True |
TorF? The higher is number the greater the danger (for red, blue, and yellow) | True |
TorF? The color red identifies the fire hazard | True |
TorF? Letters are used to identify the PPE needed | True |
TorF? The color white identifies the PPE needed | True |
Which federal agency is concerned with the health and safty of employees? | OSHA |
What is MSDS? | Data that contains safe handling, disposal, and precautions of materials. |
The ________ regulates the disposal of hazardous waste... | EPA |
TorF? When a hazardous chemical is placed in a separate container for use on another day, it must be labeled with a copy of the original label or a new label... | True |
Inspections of dental facilities relating to workers safety are conducted by... | OSHA |
A dentist must provide training for employees.. 4 answers | Within 30 days of employment. Whenever a new hazardous material is introduced into the workplace. Whenever procedures for safe handling and emergencies are modified. Once per year. |
Safety glasses, gloves, and face masks are examples of... | PPE |
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Urania
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