Yeshwante Babita, Choudhary Neha, Baig Nazish, Gaurav Tated and Kadam Pranit
Impression is defined as a negative likeness or copy in reverse of the surface of an object; or an imprint of the teeth and adjacent structures for use in dentistry. A good quality impression is only obtained when we have a thorough knowledge of materials, their properties, and techniques for their best manipulation. This article is a update of studies done by various dignities through time and their conclusions .
English 
Spanish 
Chinese 
Russian 
German 
French 
Japanese 
Hindi