Dental Material terms exam I

the quality or condition of sticking together or holding fast ; any attraction process between
dissimilar molecular
species that can potentially bring them in "direct contact"

the effects
the materials have on living tissue (e.g. a crown should not irritate the
gingiva, tongue, or buccal mucosa)

a
very common dental monomer used in a wide variety of dental products

result
of electromagnetic force, holding atoms together

the setting reactions as well as the decay or degradation of
materials(e.g. gypsum products set via a precipitation process, whereas dental
composites polymerize)

measure of this change in volume (materials expand when
heated) in relation to the change in temperature

the
intermolecular attraction between like-molecules

biomaterials used in or around the oral cavity

when the resulting replica is used to study the size and position
of the oral tissues

replica of
a single tooth

solidification
by freezing or cooling

property
that is measured by scientific instruments that press a special tip into the
surface of the test material. Usually measured by KHN knoop hardness number

Absorption of fluid by a
solid or colloid that results in swelling

based on the laws of physics that dexcribe mass, energy, force,
light, heat, electricity, and other physical phenomena

The bonding of two or more monomers to form a polymer. A chemical
process that effects this bonding.

composed
of long chains of covalently bonded, repeating units. Chains are composed of carbon, hydrogen, and other
elements.

slip)
stress occurs when parts of an object slide by one another.

-the
result of solute with solvent

amount
of material that dissolves in a liquid such as water

the
force divided by the area on which the force has been applied

acts as wetting
agents to lower the surface tension of a liquid
and allow for increased spreadability. (reduce the contact angle of the mixed
gypsum product on the surface of the impression)

liquid separation in gel: the process by which a liquid is separated from a gel owing to further
coagulation (hydrocolloid materials contract slightly after setting and exude
water)

rate of heat flow through a material

capable of softening or fusing when heated and of hardening again when
cooled

relatively weak electric forces that attract neutral molecules to one
another in gases, in liquefied and solidified gases, and in almost all organic
liquids and solids.

ability to flow

the ability of a liquid to maintain contact with a
solid surface, resulting from intermolecular interactions when the two are
brought together.