Impression Materials: Introduction and Classification Part 1

In this lecture, we explore the fundamental concepts of dental impressions, dental models, and impression materials. We also discuss how dental appliances are fabricated in laboratories using models obtained from dental impressions. These impressions are recorded through various types of impression materials. The lecture covers the classification of impression materials based on factors such as chemical composition, setting mechanism, viscosity, and elasticity. Additionally, we delve into the ideal properties of impression materials and the factors that affect their dimensional accuracy and stability. Pdf Link: https://drive.google.com/file/d/1vUVRabmlbq0YOJEegsGseTPzwaSEE3SF/view?usp=sharing 0:00 Dental Impressions, Dental Models, and Impression materials 9:54 Classification of Impression materials based on chemical composition, setting mechanisms, viscosity, and elasticity 27:09 ideal requirements/properties of impression materials 28:20 factors affecting accuracy of impression materials 47:20 factors affecting dimensional stability of impression materials Reference Book: Applied Dental Materials by John F. McCabe Keywords: impression materials in dentistry, impression materials, Dental Impression, Dental Model, Dental cast, Die, Impression Material, Impression tray, Classification, Mucocompressive Impression Materials, Mucostatic Impression Materials, Psudoplastic Impression Materials, Reversible Impression Materials, Irreversible Impression Materials, Elastic Impression Materials, Non-elastic Impression Materials, Undercuts tooth, Ideal Properties, Dimensional Accuracy, Dimensional Stability