Dental impression materials

Polysulfide Impression Materials. In 1953 the first nonaqueous, elastic dental impression material based on the room-temperature conversion of a Hquid polymer, a polyfunctional mercaptan (polysulfide), to a strong, tough, dimensionally accurate elastomer, was introduced. The conversion of the Hquid polymer to an elastic soHd has been achieved in most products by lead peroxide [1309-60-0]. Significant improvements in strength, toughness, and especiaHy dimensional stabiHty of the set polysulfide elastomers over the aqueous elastic impression materials made these materials popular. 

Only two types of systems have found appHcation ia dentistry. Lead peroxide is the curing agent most frequently used for the polysulfide polymers that serve as dental impression materials. Lead peroxide converts the Hquid polymer to an elastic soHd within a time short enough for oral appHcations. 

In dentistry, silicones are primarily used as dental-impression materials where chemical- and bioinertness are critical, and, thus, thoroughly evaluated.546 The development of a method for the detection of antibodies to silicones has been reviewed,547 as the search for novel silicone biomaterials continues. Thus, aromatic polyamide-silicone resins have been reviewed as a new class of biomaterials.548 In a short review, the comparison of silicones with their major competitor in biomaterials, polyurethanes, has been conducted.549 But silicones are also used in the modification of polyurethanes and other polymers via co-polymerization, formation of IPNs, blending, or functionalization by grafting, affecting both bulk and surface characteristics of the materials, as discussed in the recent reviews.550-552 A number of papers deal specifically with surface modification of silicones for medical applications, as described in a recent reference.555 The role of silicones in biodegradable polyurethane co-polymers,554 and in other hydrolytically degradable co-polymers,555 was recently studied. 

Metathesis-curable compositions of polyethylene glycol monomers, (V), using ruthenium derivatives, (VI), were prepared by Angeletakis [5] and used as dental impression materials and orthodontic appliances. 

Algin formulations have been highly successful as dental impression materials. Following the basic Wilding patent (286) for a mixture of a soluble algin with a... 

Alginic acid Polysaccharide Tissue engineering, dental impression material... 

Uses Gellant, thickener, suspending agent, emulsifier, and stabilizer in foods and industrial applic. binder, emulsion stabilizer, vise, control agent in cosmetics gum, bodying agent for creams and lotions, dental impression materials water-binder in foods and industry... 

Major Applications Display device, optical sensors, combustion gas detection system, inks, correction fluid,diapers,n toothpaste, identifying fresh and stale rice, food storage,i" determine glucose in dialysis solution, monitor metabolic activity of microorganisms, detect bacterial infection, psychoactive drugs, dental impression materially Safety/Toxicity No data available... 

Major Applications Display device, nanoparticles, optical sensors, batteries, lithographic printing plates, inks, highlighters, children s coloring books, floor coatings, " disinfectants," hair dyes, - personal care products, cosmetics,i" food storage, antiseptic, dental impression materials "... 

Timmerman, G. Ippel, D. Composition for dental impression material. Eur. Pat. Appl. EP 1243246,... 

The exceptionally rapid reaction of triazolinediones with a variety of organic molecules prompted us to investigate these compounds as chain extenders or crosslinking agents for potential use in elastomeric dental impression materials. This topic has been discussed at length in the... 

This study deals with identification of a suitable coreactant for bis-triazolinediones which would provide the appropriate rates of reaction and properties for development of dental impression materials. The objectives were to synthesize and characterize suitable model compounds by reaction of triazolinediones and 2 with the selected coreactant, and to evaluate the reactivity of this coreactant with bis-triazolinediones to lead to novel alternating copolymers having the requisite properties. 

Uses in plasticizers, cosmetics, safety glass, insecticides, printing inks, paper coatings, adhesives, elastomers and explosives solvent in pol ulfide dental impression materials solvent for perfome oils perftime fixative textile lubricating agent solid rocket propellent emollient in aerosol antiperspirants insect repeller plasticizer in various plastic materials A... 

Pharmaceutical and cosmetics Suspensions, jellies, ointments, emulsions and encapsulation, tablet disintegrating agent, tablet binder, tooth paste, shaving cream, hand cream and lotions, liquid shampoos, dental impression materials, moulding compounds, active compound in antibody formation, etc. 

Balsam of Peru is also used in dental preparations, especially for the treatment of dry socket (postextraction alveolitis) and as a component in certain dental impression materials, and dentifrices. ... 

Biological Applications Antiseptic preventing prostate cancer medical devices dental impression materials ... 

Uses Gelling agent, emulsifier and stabilizer in foods (hot and cold water dessert gels), dental impression materials Regulatory FDA 21CFR 184.1724, GRAS EU E401 compliance KELTOSE [FMC Biopolymer]... 

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