1. L7 : Impression Materials
Part 2
By
Nur Hazlina Mamat
Nor Riza Abdullah

2. Impression
Material
Elastic
Synthetic
Elastomers
Hydrocolloid
Non Elastic

3. Elastic Impression Materials
Reversible
(Agar)
Return to it’s origin
Conditioning bath
(First, second, third)
Irreversible
(Alginate)
can’t return to it’s
origin
Distortion &
dimensional
(Imbibition &
synersis)

4. Material
Polysulfide
impression
material
Polyether
impression
materials
Silicone
Polyvinyl
siloxane
impression
Materials

5. Bite Registration
Gyspsum : 1.
impression plaster
2. model or lab
plaster 3. lab stone
4. Die stone 5. high
strength Die stone
Zinc oxide Eugenol
(ZOE) (paste
system)