Dental Materials Terms Flashcards
The chemical attraction between unlike molecules is known as?
Adhesion
The chemical attraction between like molecules is known as?
Cohesion
An index which indicates how one material reacts to temperature extremes in relation to another is known as?
Coefficient of thermal expansion
Slow dimensional change caused by compression is known as?
Creep
The ability to undergo change of form without breaking is known as?
Ductilty
A materials ability to recover its initial shape after undergoing a force is known as?
Elasticity
An electrical current generated generated by dissimilar metals in an acidic environment is known as?
Galvanism
The process of telling (solidificaion by cold) is known as?
Gelation
Absorption of a solvent by a gel is known as?
Imbibition
A materials capacity to be shaped by force or pressure is known as?
Malleability
Passage of oral fluids/bacteria into and out of tooth structure due to a marginal gap or failure of the marginal (restorative) seal is known as?
Microleakage (percolation)
The linking, branching, or cross-linking of smaller molecules to generate a larger molecule, as seen with composite binding and impression setting is known as?
Polymerization
The force at which a material cannot return to it’s original shape is known as?
Proportional limit
Contraction of a gel due to the loss of a solvents know as?
Syneesis
The force needed to stretch a material to the point of fracture is known as?
Tensile strength
