Dental Materials Archive

Agar Reversible Hydrocolloid Impression Material

Agar Impression material is an Hydrocolloid Reversible Impression material. It is called Reversible Impression material because of its property of reversing their physical state, which in reusing the impression material for multiple number of impressions. Agar Hydrocolloid was the first successful elastic impression material to be used in dentistry. History of Agar Impression material: It [&hellip

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Silicone Elastomeric Impression materials

CONDENSATION SILICONES It was the first type of silicone impression material. Also known as conventional silicones. Setting occurs in room temp , so called as RTV silicones. Composition: Base paste Polydimethyl siloxane (hydroxy terminated) Colloidal silica or micro sized metal oxide filler putty viscosity – 60-70% medium viscosity – 35-75 % low viscosity – 5-15% [&hellip

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Polysulfide Elastomeric Impression materials

POLYSULFIDE ELASTOMERIC IMPRESSION MATERIAL: First elastomeric impression material to be introduced, also known as mercaptan / thymol, it is a type of Rubber based impression material Supplied as Base paste (white) Accelerator (brown/grey) Available in 3 viscosities: Light bodied Medium bodied Heavy bodied Composition: Base paste: Liquid polysulfide polymer                                                [&hellip

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Elastomeric Impression Materials

Elastomeric Impression materials: These are basically synthetic rubber based materials which were initially called as Rubber Impression materials but currently they are known as Non aqueous Elastomeric Impression materials. Classification of Elastomeric Impression materials: Till now the elastomeric impression materials are divided into 3 types based on the material used 1. Polyether 2. Polysulfide 3. [&hellip

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Steps for a Perfect Dental Impression

As i mentioned already in the earlier post the Guidelines to the Perfect Impression this post is just an addition where the precautions to be taken are given in a different was so that it is easy for the Dental assistant and the Clinician to get a perfect dental impression. Tips for the Dental Assistant [&hellip

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Alginate Impression material

Alginate Impression material is an Elastic, Irreversible Impression material which is used to take the impression of both Dentulous and Edentulous Impressions. It is made from seaweed and is made with components like Sodium alginate, Calcium sulfate and other ingredients which act as retarders. Alginate material is available in powder form which turns into Gel [&hellip

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Zinc Oxide Eugenol Impression Material

Zinc Oxide Eugenol (or) ZOE is a Irreversible Rigid Impression material used as a secondary technique to take impression of Edentulous patients with the help of Mucocompessive technique. As seen in the name this impression material is made up of Zinc Oxide and Eugenol (Oil of cloves). Classification: It is classified by ADA with the [&hellip

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Impression Trays

Impression trays are dental instruments which are used to hold the Impression material in place to take a Impression of the tissue surfaces in the oral cavity, the impression trays are mainly used in Prosthodontics and used in Orthodontics to take impression of the Dentulous teeth. [GPT Definition] “The Impression trays are also defined as [&hellip

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Classification Of Impression Materials

IMPRESSION Definition: It is the negative replica of the structures of the oral cavity be it hard(tooth) or soft(gingiva, mucous membrane) structures, which are used to fabricate the cast or model of the patient, and for making crowns, dentures, and other prosthesis. CLASSIFICATION OF IMPRESSION MATERIALS. I) Based on mode of setting & elasticity a) [&hellip

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Impression Compound

Dental Impression is a negative replica of the oral cavity, many impression materials are present which are capable of getting the perfect impression if the proper guidelines are followed. Impression Compound is used to take a negative replica or an Impression of the Edentulous Oral cavity in a process called Primary Impression. The material is [&hellip

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Impression taking with Shellac Base plate

Taking of an impression with the help of Shellac baseplate is a bit out dated now but still in practice in some places, The primary aim of baseplate is to make a replica of the structures of the oral cavity on the cast by application of pressure. Instruments: Shellac Baseplate (both mandibular and maxillary) Spirit [&hellip

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