A Dental Impression is a negative replica of teeth and surrounding oral tissues and the materials used to record a Dental Impression are called as Dental Impression Materials. This lecture summarizes 3 different criteria used to Classify Impression Materials. For more lectures on Dental Materials by Dr Rashid Hassan follow www.dmbydrrashid on facebook OR visit wwwdrrashidlectures.com.

1. By
Dr. RASHID HASSAN
BDS(de’ Mont) MSc
(QMUL.UK)

2. 1) Classification on the basis of
impression techniques.
2) Classification on the basis of
setting properties/Eastic
behavior.
3) Classification on the basis of
viscosity.

4. 1. MUCOSTATIC IMPRESSION
TECHMIQUE:
The technique in which the impression
material is fluid enough to flow and does
not displace the oral tissues.
THESE INCLUDE
1) Impression plaster.
2) Agar Agar impression material.
3) ZnO Eugenol impression pastes.
4) Light body elastomers.
4

5. 2 MUCOCOMPRESSIVE
IMPRESSION TECHNIQUE:
The technique in which the impression
material is viscous and are able to
compress the oral tissues on insertion in
the patient ‘s mouth.
THESE INCLUDE
1) Impression compound.
2) Viscous alginate.

7. ON THE BASIS OF
SETTING
PROPERTIES/ELASTIC
BEHAVIOR

9. Classified into 3 types.
1) High viscosity.
2)Medium viscosity.
3) Low viscosity.

13. Dr. RASHID HASSAN
BDS(de’ Mont) MSc (QMUL.UK)
Hod Science of Dental