Fast Setting Dental Impression Putty

Product Information

Impression materials are introduced into the mouth as viscous pastes with precisely adjusted flow properties. The viscosity and flow behavior of the unmixed components are also important in regard to the ease of mixing, air entrapment during mixing, and the tendency for the trapped air to escape before the impression is made. A taper of between 10° and 20° is usually adequate and achievable. In reality this means a preparation that is as parallel as you can make it, without any undercuts.

This article will attempt to clarify some of the areas of confusion regarding impression materials and techniques. For a long time crown preparations were my least favourite part of dentistry. I found them difficult, time consuming, and struggled to get consistent results. Fenske C. The influence of five impression techniques on the dimensional accuracy of master models. Braz Dent J. 2000;11:19-27. No reaction by-products are formed as long as the correct proportions of divinylpolysiloxane and polymethylhydrosiloxane are used and there are no impurities. However, the residual polymethylhydrosiloxane in the material can lead to a secondary reaction with each other or with moisture, to produce hydrogen gas. Technically, hydrogen gas is a reaction by-product that does not affect the dimensional stability of the impression. Nonetheless, the hydrogen gas evolved can result in pinpoint voids in the gypsum casts poured soon after removal of the impression from the mouth. Manufacturers may add a noble metal, such as palladium, as a scavenger for the released hydrogen gas. The impression should be left overnight if epoxy will be used for pouring models. Take photographs - under normal and polarised conditions, with shade tabs adjacent to the teeth before tooth preparation to give the technician a reference shadeCan be used even in difficult cases like, multiple teeth restorations, crowded teeth, and extensive defect restorations. Sinus Elevation with an alloplastic material and simultaneous implant placement: A 1-stage procedure in severely atrophic maxillae. Jodia K, Sadhwani B, Parmar BS, Anchlia S, Sadhwani SB., J Maxillofac. Oral Surg (July-Sept 2014) 13(3):271-280. After the impression material has completely solidified, gently tilt the tray to dislocate the impression and then rotate the tray out of the mouth. Avoid violent use when removing the impression, avoid excessively tilting the tray, to avoid deformation of the tray and the impression, or to release the impression material, to avoid the tray rubbing against the jaw or damage the soft tissue.

During this procedure, your healthcare provider dispenses a putty-like dental impression material into plastic or metal trays. Next, they’ll place the trays over your teeth. After a minute or two, the dental impression material sets and hardens. Finally, your healthcare provider removes the trays (and impression material) from your mouth. Comparative evaluation of bioactive glass putty and platelet rich fibrin in the treatment of human periodontal intrabony defects: a randomized control trial. Naqvi A, Gopalakrishnan D, Bhasin MT, Sharma, N, Haider K, Martande S. J of Clinical and Diagnostic Research 2017 Jul, Vol-11(7): ZC09-ZC13. Profeta AC, Prucher GM. Bioactive-glass in periodontal surgery and implant dentistry. Dent Mater J. 2015;34(5):559-571. doi: 10.4012/dmj.2014-233 Therefore, it’s important to polish your preparations. This is done with fine diamond burs, abrasive disks, or white stones. Clear margins

The base paste, is a polysulfide polymer that contains a multifunctional mercaptan (-SH) called a polysulfide polymer, a suitable filler (such as lithopone or titanium dioxide) to provide the required strength, a plasticizer (such as dibutyl phthalate) to confer the appropriate viscosity to the paste, and a small quantity of sulfur, approximately 0.5%, as an accelerator. The catalyst (or accelerator) paste contains lead dioxide, filler, and plasticizer as in the base paste, and oleic or stearic acid as a retarder to control the rate of the setting reaction. Lead dioxide is the component that gives polysulfide impression material its characteristic brown color. The terms catalyst and accelerator used here and with other impression materials are actually misnomers. Reactor is a more appropriate term for the reactions associated with polysulfide and other types of impression materials. The most effective way of recording a putty wash impression is to use the one-stage technique in a rigid metal tray.