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Dental materials final - ch 3

Terms in this set (20)

A process that is characterized by the release of heat or the rate of heat flow from a chemical reaction in a dental material is called:

Exothermic Reaction
Percolation
Thermoplasticity
Vapor Pressure
exothermic reaction
A load that is placed on a material is referred to as:

Strain
Deformation
Stress
Density
stress
A change of atomic bonds in the length of an object that is stretched or compressed divided by the object's original length is called:

Force
Deformation
Strain
Resilience
strain
When the amount of material dissolves in a liquid in a given time it is said to have _____ properties:

Thermoplasticity
Solubility
Malleability
Elongation
solubility
The material's ability to flow under load is called:

Viscosity
Solubility
Wetting
Coefficient of thermal expansion
viscosity
The measurement of a contact angle of a liquid's ability to flow or spread out and remain over the entire surface on a solid is known as:

Viscosity
Solubility
Wettability
Sol
wettability
The weight or load of an object in motion that is applied to a stable object such as a person pushing on a desk is an example of:

Load
Strain
Tension
Force
force
An electrical current that takes place when 2 dissimilar metals touch in the presence of saliva is known as:
Galvanic Shock
Thermal Conductivity
Heat of Fusion
Goldilock's Principle
galvanic shock
When a material has the ability to resist forces, it is known to have ______ properties.

Chemical
Physical/Mechanical
Biological
physical/mechanical
The repeated expansion and contraction when heating and cooling, causing open and closure of a gap between two materials, and eventually ending in microleakage is a result of:

Percolation
Exothermic Reaction
Passivity
Thermal Conductivity
percolation
Properties between atoms that involve the transfer or sharing of electrons between atoms is called:

Poisson's Ratio
Chemical Properties
Primary Bonds
Abrasion Resistance
primary bonds
When a dental material has the ability to elicit an appropriate response without a reaction in a given application in the human body is is said to have ________ properties.

Chemically compatible
Biologically compatible
Mechanically compatible
Physically compatible
biologically compatible
The force that is applied by the masticatory muscles in a dental occlusion is called:

Load
Stress Concentration
Biting Forces
Fracture Toughness
biting forces
Tests that are used with Durometers to measure surface hardness by using the size of an indentation made in the material or object are called ____________ hardness tests.

Brinell and Knoop
Goldilock's
Poisson's
Young's
brinell and knoop
A small, gradual change in shape of a material or object over a long period of time as a result of being under continuous compressive stress is called:

Shearing forces
Permanent deformation
Elongation
Creep
creep
A liquid that is capable of moving steadily or continuously has the ability to:

Flow
Creep
be resilient
Deform
flow
The process of adhesion where a material can stick to a flat surface or adhere two flat surfaces together is called:

Absorption
Bonding
Syneresis
Yield Point
bonding
The molecular force of attraction between unlike materials which determines their adhesion that can have a high molecular attraction or lower attraction forces is called:

Stress Concentration
Stress Relaxation
Surface Energy
Tension
surface energy
Stress and strain applied to an object to the point it cannot return to its original length results in the point of:

Proportional limit
Imbibition
Ultimate Tensil Strength
Permanent (Plastic) Deformation
permanent (plastic) deformation
A chemical reaction where a metal undergoes oxidation resulting in the metal's surface to become dull or stained, losing its luster, but can still be polished and reversed at this point is called:

Corrosion
Tarnish
Deformation
Hue
tarnish
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