Uses Of Impression Materials

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.

Uses of impression materials.

Vinyl polysiloxane impression material impression material vinyl polysiloxane dental impression materials used for making accurate dental impressions with excellent reproducibility. Types of impression trays. Impression materials are used to produce a detailed replica of the teeth and the tissues of the oral cavity. In dentistry we take impressions of teeth and their supporting structur es.

This classification is based on the capability of the material to withdraw over the undercuts it has set. General comments impression materials are used to make replicas models or casts of t eeth and other oral tissues. Polyether impression material was significantly different from the other materials available at that time. 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.

Contemporary dentistry generates new information every year and digital dentistry is becoming established and infl. However it has been replaced by rubber based impression materials because of the costly armamentarium required. Agar is an aqueous impression material used for recording maximum details. It is available in putty and light body consistencies to aid dentists make perfect impressions for fabrication of crowns bridges inlays onlays and veneers.

A correctly made dental impression will capture a part or all of a person s dentition and surrounding structures of oral cavity. It gives good detail reproduction than any other material. For example as in the production of dies for fixed restorations. 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.

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. It was not borrowed from another industry. Chemistry optional these materials have an ether group in the molecular structure. Impression trays are used to hold the impression material allowing the operator to place it into the patients mouth.

These supporting structures include gingiva a lveolar bone or residual ridge hard and soft palate and frenums which are muscle attachments. They may be perforated for better retention of the impression material. Development polyether impression material was developed in the late 1960s for use a s a dental impression material.