Ch. 11, 13

Question 1

acrylic resin

Answer 1

hard, brittle, glassy polymers; thermoset, once it sets, it is not heated and molded

Question 2

cold (chemical) cure

Answer 2

supplied as powder and liquid; has an activator typically a tertiary amine added to the liquid; when inhibitor is used up during the dough stage, polymerization reaction proceeds, becomes stiffer, generates warmth.

Question 3

heat-activated acrylic resins

Answer 3

similar to chemically activated systems, just no chemical activator present in the liquid, stays in dough stage for extended period of time

Question 4

porosity

Answer 4

is a major concern in acrylic resin systems, if monomer evaporates during handling/processing, the resulting material will be porous which weakens the material

Question 5

denture base

Answer 5

constructed on master cast made from the final impression, pink part of denture

Question 6

relining

Answer 6

adds a small amount of new material to the inside tissue are of the denture base to replace the additional alveolar ridge that has been lost since the denture was made

Question 7

wires

Answer 7

uses in ortho as springs and stabilizers

Question 8

bracket

Answer 8

device attached to teeth, holds the archwire in place, used to transfer the forces of wires, springs, and elastics to the teeth

Question 9

band

Answer 9

encircles the crown of the tooth

Question 10

elastic ligatures

Answer 10

used to secure the archwire into the bracket

Question 11

irrigants

Answer 11

aqueous solutions that are used to disinfect the canal system by killing bacteria and dissolving pulpal tissue; include sodium hypochlorite, chx, or sterile saline

Question 12

lateral condensation

Answer 12

most common filling technique

Question 13

endodontic files

Answer 13

used to remove the contents of the canal system

Question 14

apicoectomy

Answer 14

surgical procedure that removes 1-3mm of the root apex; in addition, the apical portion of the canal is prepared and a filling is placed to seal the end of the root (retrofill)

Question 15

sutures

Answer 15

• absorbable: include surgical gut, plain/”chrome”, synthetic polyglycolic acid
• nonabsorbable: include surgical silk and other threads

Question 16

physical characteristics of sutures

Answer 16

may be single filaments or twisted or braided, multifilament materials; the size of sutures (diameter) is designed by a number of zeros; the smallest is 0 and “ought”, 00 is “double ought”

Question 17

pulpotomy

Answer 17

removal of a portion of the pulp