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Materials for Impressions – 2003
Dental Update, 2004Thirty years ago the author set out the logical sequence of dimensional changes that could occur in the impression materials of the 1970s. In the 21st Century, it appears that little has changed and that what the dental practitioner requires today is the same as it always was – a forgiving material that produces perfect impressions with a minimum of ...
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Silicone Materials for Ear Impressions
Scandinavian Audiology, 1985Comparative properties have been determined for some commonly used ear impression materials (condensation reaction silicones) and some recently developed dental products (addition reaction silicones). Experiments have included measurement of dimensional stability, weight change on storage, viscosity, syringing characteristics, the energy required to ...
E.C. Combe, Michael Nolan
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Radiopacity of elastomeric impression materials
Australian Dental Journal, 1994AbstractThe purpose of this study was to measure and classify the radiopacity of various elastomeric impression materials available on the open market and to compare their appearance in radiographs of the oral tissues. In order to measure and classify their radiopacity, twenty‐eight specimens of various materials were placed and exposed on film ...
D. Iakovidis +3 more
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Journal of Veterinary Dentistry, 2013
It is clear that many impression materials are available to the veterinary dentist. They each have different inherent properties, handling characteristics, and indications for use. A thorough understanding of these concepts is essential if the veterinarian and laboratory technician are to produce meaningful and accurate reproductions of oral structures.
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It is clear that many impression materials are available to the veterinary dentist. They each have different inherent properties, handling characteristics, and indications for use. A thorough understanding of these concepts is essential if the veterinarian and laboratory technician are to produce meaningful and accurate reproductions of oral structures.
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Tear energy of impression materials
Journal of Dentistry, 1986Tear energies are determined for different types of impression materials. Reversible hydrocolloids show the lowest tear energy values, followed by alginate materials. Condensation silicone-, addition silicone-, polyether- and polysulphide impression materials give higher tear energy values.
P.G.F.C.M. Battistuzzi, M.M.A. Vrijhoef
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British Journal of Orthodontics, 1998
This paper incorporates a brief review of impression materials currently available for use by the orthodontic profession; subjective assessments of a selection of alginates, silicones and bite registration materials in a clinical setting; and a list of prices and retailers of impression materials.
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This paper incorporates a brief review of impression materials currently available for use by the orthodontic profession; subjective assessments of a selection of alginates, silicones and bite registration materials in a clinical setting; and a list of prices and retailers of impression materials.
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Rigidity of elastomeric impression materials
Journal of Oral Rehabilitation, 1989SummaryThe rigidity of an impression material should be less than a certain value in order that excessive forces are not required when taking impressions of undercut areas. Conversely, the impression should be sufficiently rigid to withstand the weight of stone whilst pouring the cast without distortion.This paper describes a method of determining ...
K. D. Jamani, H.J. Wilson, E. Harrington
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Dental Impression Materials and Techniques
Dental Clinics of North America, 2017Dental 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. Contemporary dentistry generates new information every year and digital dentistry is becoming established and influential.
Jorge L Garaicoa +2 more
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Correction of defective impressions by the selective addition of impression material
The Journal of Prosthetic Dentistry, 1984R elining a deficient or otherwise defective impression after it has been completely relieved and vented is a commonly accepted procedure. Several studies have documented this technique and the resultant accuracy of the relined impressions.1-4 A similar technique is the widely used and accepted putty/wash impression system.i-6 However, the accuracy of ...
Bomberg Tj, Hatch Ra
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Impression Materials and Techniques
2018This chapter will emphasise the need to: Ensure your technician can feedback on defective impressions. Choose an appropriate impression material based on an understanding of its properties. Wash and disinfect impressions before sending them to the laboratory.
Robert Wassell +2 more
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