elastomeric impressions

Question 1

why do we take an impression and a gypsum model

Answer 1

1. To study the case
   
   2. To diagnose the case
   3. To plan the line of treatment
   4. To educate the patient about their dental need
      To construct indirect restorations e.g. inlay, Onlay, crown, bridge, complete or partial denture

Question 2

what are we looking for in a impression material

Answer 2

Consistency 
Flow properties
Setting time- reasonably short  
Dimensional stability 
Ease of handling

Question 3

what is an elastomer

Answer 3

Is a natural or synthetic rubber or rubberoid material which has the ability to undergo deformation under the influence of a force and regain its original shape once the force has been removed