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2. Dental impression - Wikipedia

   en.wikipedia.org/wiki/Dental_impression

   The Triple Tray is a type of plastic tray used for taking impressions for a crown using the double arch or dual bite impression technique. It is used for taking impressions of the tooth preparation and the opposing teeth, by the use of a special impression material, usually elastomer.

3. Tray - Wikipedia

   en.wikipedia.org/wiki/Tray

   A darkroom tray, also known as print developing tray, is used in photography. A dental impression tray is a receptacle or device that is used to carry impression material to the mouth, confine the material in apposition to the surfaces to be recorded, and control the impression material while it sets to form the impression.

4. Dental material - Wikipedia

   en.wikipedia.org/wiki/Dental_material

   Impression materials are designed to be liquid or semi-solid when first mixed, then set hard in a few minutes, leaving imprints of oral structures. Common dental impression materials include sodium alginate, polyether and silicones. Historically, plaster of Paris, zinc oxide eugenol and agar were used.

5. Complete dentures - Wikipedia

   en.wikipedia.org/wiki/Complete_dentures

   The primary (or preliminary) impressions, taken using a stock tray (preformed) and a suitable impression material, are used to construct special trays. Special trays are made in either acrylic or shellac [14] and have a shape that corresponds to the shape of the mucosa of the individual patient. This way, it is ensured that during secondary (or ...

6. Polyvinyl siloxane - Wikipedia

   en.wikipedia.org/wiki/Polyvinyl_siloxane

   It is also used in other contexts where an impression similar to a dental impression is needed, such as in audiology (to take ear impressions for fitting custom hearing protection or hearing aids [2]) or in industrial applications (such as to aid in the inspection of interior features of machined parts, for example, internal grooves inside ...

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