Dental materials

materials used to treat disease

the property of a material that allows it to not impede or adversely affect living tissue

materials used to reconstruct tooth structure

force applied to compress an object

force applied in opposite directions to stretch an object

force applied when two surfaces slide against each other or in a twisting or rotating motion

the internal force, which resists the applied force

distortion or deformation that occurs when an object cannot resist a stress

bending caused by a combination of tension and compression

a fracture resulting from repeated stresses that produce microscopic flaws that grow

a material's ability to maintain its position without displacement under stress

susceptible to being dissolved

the ability to absorb moisture

deterioration of a metal caused by a chemical attack or electrochemical reaction with dissimilar metals in the presence of a solution containing electrolytes (such as saliva)

discoloration resulting from oxidation of a thin layer of a metal at its surface. It is not as destructive as corrosion

an electrical current transmitted between 2 dissimilar metals

a change in the size of matter. For dental materials, this usually manifests as expansion caused by heating and contraction caused by cooling

the measurement of change of volume or length in relationship to change in temperature

movement of fluid in the microscopic gap of the restoration margin as a result of differences in the expansion and contraction rates of the tooth and the restoration with temperature changes associated with ingestion of cold or hot fluids or foods

the rate at which heat flows through a metal

materials having low thermal conductivity

the production of heat resulting from the reaction of the components of some materials when they are mixed

the act of sticking two things together. In dentistry, it is used to describe the bonding or the atoms or molecules of dissimilar substances bond together and differes from cohesion in which attraction among atoms and molecules of like (similar) materials holds them together

to connect or fasten; to bing

the ability of a liquied to wet or intimately contact a solid surface. Water beading on a waxed car is an example of poor ___________

the ability of a liquid material to flow

the minimum thickness obtainable by a layer of a material. It is particularly important to dental cements

the electrical charge that attracts atoms to a surface

the space between the walls of the preparation

leakage of fluid and bacteria caused by microscopic gaps that occur at the interface of the tooth and the restoration margins

the color of the tooth or restoration. It may include a mixture of colors, such as yellow-brown

the intensity or strength of a color (e.g. a bold yellow has more __________ than a pastel yellow)

how light or dark a color is. A low ______ is darker and a higher _______ is brighter

light passing directly through an object

optical property in which light is completely absorbed by an object

varying degrees of light passing through and being absorbed by an object

a life-like quality