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Ch. 2 Dental Mat.
Question | Answer |
---|---|
items used to treat disease | therapeutic agents |
items used to reconstruct tooth structure | restorative agents |
pressure applied to compress/condense | compressive force |
pressure applied in opposite directions to stretch an object | tensile force |
pressure applied when two surfaces slide against each other or in a twisting or rotating motion. | shearing force |
pressure or tension exerted on a material object | stress |
distortion or deformation occurring when an object cannot resists a stress | strain |
bending stress, a combination of tension and compression | flexural stress |
repeated stresses resulting in fractures | fatigue failure |
suscepectibility to being dissolved | solubility |
the ability to absorb moisture | water sorption |
to wear away, especially by a chemical reaction | corrosion |
discoloration caused by oxidation of a metal surface | tarnish |
an electric current transmitted between two dissimilar metals | galvanism |
expansion and contraction of matter when heated | dimensional change |
measurement of expansion and contraction | coefficient of thermal expansion |
space between restoration and tooth caused by continual shrinkage and expansion of restoration | percolation |
the rate at which heat flows through a material | thermal conductivity |
matter that prevents the passage of electricity, heat, or sound through an object | insulators |
the reaction of certain components when they are mixed, resulting in the production of heat | exothermic reaction |
the ability of a material to maintain its position without displacement under stress | retention |
ability to stick tightly to another surface | adhesion |
ability to hold together | bonding |
the degree tow hich a liquid adhesive is able to spread over the surface of a tooth and restorative material | wetting |
the ability of a liquid material to flow | viscosity |
the minimum thickness obtainable by a layer of material | film thickness |
the attraction of atoms to a surface | surface energy |
the space between the walls of preparation and the restoration | interface |
the seepage of harmful materials | microleakage |
material that do not impede or adversely affect living tissue | biocompatible |
the dominant color of the wavelenth detected | hue |
the intensity or strength of the color | chroma |
how light or dark a color is | value |
an object that one can see through | transparent |
an object that completely absorbs light | opaque |
the balance of transparency and opaqueness in an object | translucency |
lifelike appearance | vitality |