1. DA 122 DENTAL MATERIALS Zinc Oxide Eugenol Cements

2. ZOE Zinc Oxide Eugenol Also called ZOE Not pronounced as a name…use the letters!

3. Common Uses 1. insulating base 2. temporary restoration 3. temporary cement 4. root canal sealer

4. Special Properties 1. Sedative effect on pulp-very important 2.Strong odor, offensive to patient; can burn tissue 3.Cannot be used with or near composite restoration: Eugenol retards setting Non-eugenol types are available

5. Variations in ZOE materials TYPE I: temporary cement and insulating ba se  ZOE: insulating base  Fynal: intermediate temporary cement  Tempbond: temporary cement  Supplied as 2 tubes of paste

6. Variations in ZOE materials (cont’d) Type II: temporary restoration-  Mixed as putty-like consistency  Ratio- 1:1  IRM = intermediate restorative material  Reinforced and lasts up to 12 months, if necessary

7. Armamentarium Powder + liquid ORbase + catalyst Treated paper pad (or parchment pad) Metal cement spatula Measuring devices, if necessary 2 x 2 gauze Plastics filling instrument

8. Ratios and Mix/Set times MaterialRatio: powder/liquid Mix timeWork timeSet time ZOE Temporary restoration = 1:1 Base = 1:1 + extra powder 60 seconds n/a5 minutes Fynal Temp. cement= 1 scoop:8 drops 60 secondsn/a5 minutes Tempbond Equal amounts of base + catalyst 30 seconds2 minutes4 minutes IRM Hand-mix = 1:1 1 Capsule + extra powder Requires amalgamator 60 seconds 8-15 seconds on HIGH on amalgamator n/a5 minutes

9. Clean-up 2x2 gauze with orange solvent or rubbing alcohol Immediately Use ultrasonic cleaner + temporary cement remover if material sets before clean-up

10. Appearance Temporary cement = thick cream Temporary restoration = putty-like Insulating base = putty-like

11. Common Brand Names ZOE FYNAL TEMP-BOND IRM Copyright 2012 Porter & Chester Institute, Inc. All rights reserved