Chapter 16

Question 1

Definition of polymer

Answer 1

long-chain, high molecular weight molecule produced by the linking of many low molecular weight monomer molecules

Question 2

Definition of monomer

Answer 2

low molecular weight molecules that are joined to form polymers

Question 3

Definition of polymerization

Answer 3

act of forming polymers; process can be activated by chemicals, heat, or light

Question 4

Definition of cross-linked polymers

Answer 4

joining of adjacent long-chain polymers by bonding of short chains along their sides

Question 5

Definition of addition polymerization

Answer 5

common form of polymerization for dental materials

Question 6

Definition of free radical

Answer 6

reactive group on one end of a monomer that initiates the joining of adjacent monomer molecules to form a polymer

Question 7

Definition of poly (methyl metacrylate)

Answer 7

polymer composed of numerous methyl methacrylate monomers linked together into a long chain

Question 8

Definition of plasticizer

Answer 8

liquid added to acrylic resin to soften it and make it more pliable

Question 9

Definition of porosity

Answer 9

numerous microscopic holes or voices within a material

Question 10

Definition of prosthesis

Answer 10

device used for the replacement of missing tissues

Question 11

Definition of long-term soft liner

Answer 11

soft liner that is used in patients who have problems with hard acrylic denture bases (1-3 years)

Question 12

Definition of short-term soft liner

Answer 12

soft provisional liner used to improve tissue health (few days to few weeks)