Uses Of Different Impression Materials

Different types of impression materials are available which vary in their properties.

Uses of different impression materials.

T he mixed material is placed on the occlusal s urfaces of the mandibular arch. Mechanical property indicates the flexibility of a material. The two types of material are inelastic and elastic. There are various impression techniques ranging from open mouth to close mouth methods.

The elastic impression materials must then be used but as most are actually viscoelastic materials see chapter 1 6 there is a possibility of some permanent deformation. Bite registration materials most elastome ric impression materials can be used as a bite registration material. Different types of impression materials are available. Pvs offer advantages of improved hydrophilic nature and thus better flow precision and accurate detailing kumar and vijayalakshmi 2006.

It is made by placing an appropriate material in a stock or custom dental impression tray which is designed to roughly fit over the dental arches. Impression materials are selected because of their unique qualities that allow dentists to obtain the most accurate reproduction. Technique accuracy taste ease of manipulation cost dimensional stability and the operator s preference will dictate the choice of impression materials figure 11 1. Other uses of impression materials.

An impression material is classified according to specific properties. One of the most commonly used nanoimpression materials are polyvinylsiloxanes pvs. The p atient bites into the material. A dental impression is an imprint of teeth and or soft tissues formed with specific types of impression materials that is used in different area of dentistry including prosthodontics.

A dental impression is a negative imprint of hard teeth and soft tissues in the mouth from which a positive reproduction cast or model can be formed. Figure 11 1 impression material classification elastic properties. A correctly made dental impression will capture a part or all of a person s dentition and surrounding structures of oral cavity. Also there is a wide range of dental impression materials like the following.

Unique vps impression material uses an advanced temperature sensitive formulation howard e. Each of the materials has advantages and disadvantages but they are each used for a different purpose and are effective and commonly used products in dentistry today. The differences between impression materials as outlined above are the materials themselves and the purpose they are used for.