Pdf an investment composition is described for use in dental investment. Pdf the 3rd edition of dental materials principles and applications by zohaib khurshid and his coeditor is an uptodate information manual in. Following the production of a wax pattern by either the direct or indirect method chapter 4, the next stage in many dental procedures involves the investment of the pattern to form a mould. A sprue is attached to the pattern and the assemblage is located in a casting ring. The 3rd edition of dental materials principles and applications by zohaib khurshid and his coeditor is an uptodate information manual in the field of dental material science. If the refractory investment is to be poured into the same impression as the master model, be sure to pour the refractory model last. Introduction a material which is suitable for forming a mould into which molten metal or alloy is cast. Dental materials and prosthodontics, school of dentistry of ribeirao. Dental investment or refractory material nobilium products inc. Refractory materials refractory casting metalworking scribd. The procedure for forming the mold is described as investing. Reported findings of ethyl silicate refractory material for dental use. This is called a refractory model and is made out of a special material a refractory material so that it may be invested and subjected to high temperature so that the metal framework can be cast on to it.
A material that will withstand high temperatures without decomposing. Developed alumina core material to strengthen dental. Overview investment materials ada specification 2 chemistry. Pdf the effect of investment materials on the color of feldspathic.
Download as docx, pdf, txt or read online from scribd. Dental casting investment material linkedin slideshare. Pdf glassceramicrefractory techniques, their development and. An investment material can be described as a ceramic material which is suitable for forming a mold into which metal or alloy is cast. Refractory materials are contained in all dental investments, whether for casting. Steps spruing of wax pattern investing wax burn out casting with molten alloy. Glassceramicrefractory techniques, their development and. Dr mumtaz ul islam m phill scholar 1 st year 121620 1 2. Investment material is poured around the wax pattern. In the manufacture of a dental investment o0 molding material for the molding of metal all.