ZOE

Question 1

what is zoe cement mainly used for

Answer 1

temporary filling material, temporary cementation of cast restoration, cavity liner

Question 2

what are the classes of zoe cement, and what are they used for

Answer 2

type1: temp cementation

type2: permanent cementation

type3: temp filling and thermal insulation

type4: cavity liner

Question 3

what effect does ZOE have on the pulp

Answer 3

sedative effect due to eugenol

Question 4

what are some factors that affect setting time

Answer 4

1. partile size, smaller size, greater surface are, faster
2. p/l ratio, more powder faster ST
3. Heat: cool glass slab, slower
4. accelerators: alcohol and water–> faster

retarders: glycol and glycerine

Question 5

what are some advantages of ZOE

Answer 5

thermal properties are about the same as dentine, it is ph6.6-8 least irritating to pulp