The most significant work in this area since 1966 is reviewed below. This temperature is high enough to maintain the material in the sol form. Four polysulfide materials produced dies which were larger t … The working times of impression materials procured at retail in alginate paste were shorter than those of alginate Impression materials in powder. NON ELASTIC IMPRESSION. Zinc Oxide Eugenol 4. : A New Method of Recording the Elastic Recovery of Dental Impression Materials, Scand J Dent Res 84: 175-182, 1976. Flow (quasi viscosity) and elastic behavior of alginate impression materials under the influence of practice orientated processing parameters] Welker D. Stomatol DDR, 24(5):321-332, 01 May 1974 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. After the preparation, they are placed inside impression trays. Oversized b. The accuracy of these final restorations is highly dependent on the impression materials and techniques utilized. Impression material is of liquid or semi-solid nature when first mixed and placed in the mouth. Addition. Now customize the name of a clipboard to store your clips. The value is provided with two numbers: one represents the hardness at 90 seconds after removal from the mouth; the other at 2 hours. Can be used as a one or two stage technique. If you continue browsing the site, you agree to the use of cookies on this website. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Schweizerische Monatsschrift fur Zahnheilkunde = Revue Mensuelle Suisse D'odonto-stomatologie, 01 Jan 1970, 80(9): 1007-1021 Language: ger PMID: 5272188 . Elastic impression materials can be further divided into hydrocolloid and elastomeric impression. The time from start of mixing till just before the start of appearing elastic properties of impression material C. Loss of luster of impression material D. None of the above # Minimum flow of type I impression compound at mouth temperature is : A. sion materials claim the determination Low stiffness of an impression mate- of strain in compression as a property rial is also a favored property for the The purpose of the present study was: partly describing the elastic deforma- technical laboratory, because it elimin- 1. A high viscosity sol is transferred from the tempering bath into a stock tray and a low viscosity material can be syringed directly onto the prepared teeth. ADVANTAGE OF ELASTIC IMPRESSION MATERIAL OVER RIGID IMPRESSION MATERIAL