Final zinc oxide eugenol cement

Question 1

type 1

Answer 1

temporary cementation

Question 2

type 2

Answer 2

permanent cementation of restoration fabricated outside the mouth

Question 3

type 3

Answer 3

temporary restorative material or a base

Question 4

type 4

Answer 4

cavity liner

Question 5

ZOE stands for?

Answer 5

zinc oxide eugenol

Question 6

ZOE is limited as a cement why? used as?

Answer 6

low strength and high solubility

*it is kind to pulp and has been used as temporary restorative material, endodontic sealer and surgical dressing

Question 7

olive oil in ZOE is used to?

Answer 7

modify the eugenol’s viscosity and taste

Question 8

why does ZOE have high solubility?

Answer 8

it is readily hydrolyzed to form free eugenol and sinc hydroxide

Question 9

advantages and disadvantages

Answer 9

advantages= good with pulp (obtundent and neutral pH), good margin seal
disadvantages=  high solubility and low compressive strength (even lower in modified formulations)

Question 10

what is nesicary for setting reaction to proceed with ZOE?

Answer 10

some water

Question 11

major component of powder? liquid?

Answer 11

powder= zinc oxide
liquid= eugenol (clove oil)

Question 12

what modifications have been made to increase strength?

Answer 12

1) add polymethyl methacrylate polymer OR

2) Al2O3 to powder and ethoxybenzoic acid to liquid