Uses Of Impression Materials

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.

Uses of impression materials.

General comments impression materials are used to make replicas models or casts of t eeth and other oral tissues. They may be perforated for better retention of the impression material. In dentistry we take impressions of teeth and their supporting structur es. Agar is an aqueous impression material used for recording maximum details.

Chemistry optional these materials have an ether group in the molecular structure. This classification is based on the capability of the material to withdraw over the undercuts it has set. A correctly made dental impression will capture a part or all of a person s dentition and surrounding structures of oral cavity. These supporting structures include gingiva a lveolar bone or residual ridge hard and soft palate and frenums which are muscle attachments.

Contemporary dentistry generates new information every year and digital dentistry is becoming established and infl. The impression material will set chemically or physically and then may be removed from the mouth for use extra orally. However it has been replaced by rubber based impression materials because of the costly armamentarium required. It gives good detail reproduction than any other material.

Agar is also known as a reversible hydrocolloidal impression material. Vinyl polysiloxane impression material impression material vinyl polysiloxane dental impression materials used for making accurate dental impressions with excellent reproducibility. Impression materials that is the materials used to get an idea about the shape of teeth and the alveolar ridges can be categorized as nonelastic and elastic materials. Types of impression trays.

From this replica or impression a model can be made that is used in the construction of full dentures partial dentures crowns bridges and inlays. Impression materials are used to produce a detailed replica of the teeth and the tissues of the oral cavity. It was not borrowed from another industry. Polyether impression material was significantly different from the other materials available at that time.

For example as in the production of dies for fixed restorations. Impression trays are used to hold the impression material allowing the operator to place it into the patients mouth. It is available in putty and light body consistencies to aid dentists make perfect impressions for fabrication of crowns bridges inlays onlays and veneers.