Uses Of Different Impression Materials

The two types of material are inelastic and elastic.

Uses of different impression materials.

Technique accuracy taste ease of manipulation cost dimensional stability and the operator s preference will dictate the choice of impression materials figure 11 1. Pvs offer advantages of improved hydrophilic nature and thus better flow precision and accurate detailing kumar and vijayalakshmi 2006. A correctly made dental impression will capture a part or all of a person s dentition and surrounding structures of oral cavity. Different types of impression materials are available.

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. Figure 11 1 impression material classification elastic properties. The p atient bites into the material. 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.

Mechanical property indicates the flexibility of a material. There are various impression techniques ranging from open mouth to close mouth methods. One of the most commonly used nanoimpression materials are polyvinylsiloxanes pvs. Also there is a wide range of dental impression materials like the following.

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. T he mixed material is placed on the occlusal s urfaces of the mandibular arch. Unique vps impression material uses an advanced temperature sensitive formulation howard e. Impression materials are selected because of their unique qualities that allow dentists to obtain the most accurate reproduction.

Bite registration materials most elastome ric impression materials can be used as a bite registration material. 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. 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.

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. 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. 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.