Uses Of Different Impression Materials

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.

Uses of different impression materials.

The differences between impression materials as outlined above are the materials themselves and the purpose they are used for. 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. 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. Mechanical property indicates the flexibility of a material.

Figure 11 1 impression material classification elastic properties. Different types of impression materials are available which vary in their properties. Also there is a wide range of dental impression materials like the following. The p atient bites into the material.

Bite registration materials most elastome ric impression materials can be used as a bite registration material. There are various impression techniques ranging from open mouth to close mouth methods. Storage stability there is usually a significant delay between the taking of an impression and its arrival in the dental laboratory where the model is poured. One of the most commonly used nanoimpression materials are polyvinylsiloxanes pvs.

The two types of material are inelastic and elastic. 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 correctly made dental impression will capture a part or all of a person s dentition and surrounding structures of oral cavity. In the routine practice of restorative dentistry impression materials are one of the key materials that make our practices easier and more predictable than in the past.

Impression materials are selected because of their unique qualities that allow dentists to obtain the most accurate reproduction. Pvs offer advantages of improved hydrophilic nature and thus better flow precision and accurate detailing kumar and vijayalakshmi 2006. Different types of impression materials are available. Other uses of impression materials.

A dentist uses custom made or universal size trays impression materials and lubricants to make an impression of your teeth gums and part of your jaws. An impression material is classified according to specific properties. Technique accuracy taste ease of manipulation cost dimensional stability and the operator s preference will dictate the choice of impression materials figure 11 1.