Uses Of Impression Materials

However it has been replaced by rubber based impression materials because of the costly armamentarium required.

Uses of impression materials.

In dentistry we take impressions of teeth and their supporting structur es. Vinyl polysiloxane impression material impression material vinyl polysiloxane dental impression materials used for making accurate dental impressions with excellent reproducibility. 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. Polyether impression material was significantly different from the other materials available at that time.

These supporting structures include gingiva a lveolar bone or residual ridge hard and soft palate and frenums which are muscle attachments. Type ii higher fusing material used as an adaptation material which requires more viscous properties used for making primary impression of the soft tissues and then used a tray to support a thin layer of a second impression material such as znoe paste hydrocolloids or nonaqueous elastomers 45. Types of impression trays. Dental impression making is the process of creating a negative form of the teeth and oral tissues into which gypsum or other die materials can be processed to create working analogues.

General comments impression materials are used to make replicas models or casts of t eeth and other oral tissues. Impression trays are used to hold the impression material allowing the operator to place it into the patients mouth. Agar is an aqueous impression material used for recording maximum details. 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. The impression material will set chemically or physically and then may be removed from the mouth for use extra orally. A correctly made dental impression will capture a part or all of a person s dentition and surrounding structures of oral cavity. This classification is based on the capability of the material to withdraw over the undercuts it has set.

For example as in the production of dies for fixed restorations. It is available in putty and light body consistencies to aid dentists make perfect impressions for fabrication of crowns bridges inlays onlays and veneers. Agar is also known as a reversible hydrocolloidal impression material. Development polyether impression material was developed in the late 1960s for use a s a dental impression material.

Contemporary dentistry generates new information every year and digital dentistry is becoming established and infl. They may be perforated for better retention of the impression material. It gives good detail reproduction than any other material.