Title: Impression Materials
Course: DES 1100 Dental Materials > Section: Module 7 - Impression Materials

Introduction

The various types of impression materials will be presented in this module. The types of trays used to take impressions and the techniques used for different types of materials will be presented. The criteria for an acceptable impression will be described.

Impressions are needed for most indirect restorations, for opposing impressions, and for appliances. Dental hygienists should have knowledge and experience in taking acceptable primary impressions. The understanding of impression materials and techniques are valuable skills that the dental hygienist can contribute to the dental team.

Objectives

Upon completion of this module, the student will be able to:

- List the various categories of impression materials and explain their differences.
- Explain why polyvinyl siloxane impression material is so popular.
- List criteria for an acceptable alginate impression.

Readings & Resources

Dental Materials, Clinical Applications for Dental Assistants and Dental Hygienists, Hatrick, Eakle, & Bird, Chapter 14, pp. 175-201.

Assignments and Activities

- Post in the Module 7 Discussion Board.
- Complete the Module 7 Reflective Assignment.
- Complete the Module 7 Quiz.