%, in particular 28 to 55 wt. The viscosity of component (c) is preferably in the range from 40 to 2,000 mPa.s, particularly preferably 50 to 1,000 mPa.s. In the case of a volume ratio of 5 parts of base paste to 1 part of catalyst paste, preferred amounts can be represented as follows: At a volume ratio of 5:1, tubular film bags can be filled with the two pastes and the pastes can be mixed later with the aid of the PENTAMIX® (ESPE) mixing and metering apparatus shortly before use. Nevertheless, the flow properties must be adequate, so that conveying and mixing in the Pentamix apparatus is possible in a suitable manner. Particularly preferred non-reinforcing fillers are quartzes, christobalites and sodium aluminium silicates, which can be surface-treated. The need for manual mixing of base pastes and catalyst pastes, above all when mixing larger quantities of material, is thus eliminated, since this can take place automatically and within a short time. When producing the provisional crowns and bridges, the dentist must cut the cured impression at the interdental points, so that the material used for production of the provisional prostheses, which in itself is relatively brittle, does not become too thin at the interdental points and break. Chemag), "Cellite 219", "Cellite 499", "Cellite 263 LD", "Cellite 281" and "Cellite 281 SS" from Johns-Manville, and "Diatomite 104", "Diatomite CA-3", "Diatomite IG-33", "Diatomite 143", "Diatomite SA-3" and "Diatomite 183" from Dicallite, and also the products "Clarcel" from Ceca. 19.4 parts of a polydimethylsiloxane with terminal vinyl groups and a viscosity of 7,000 mPa.s at 23° C., 3.1 parts of a polydimethylsiloxane containing SiH groups and with a viscosity of 60 mPa.s at 23° C., 32.2 parts of a polydimethylsiloxane with a viscosity of 50 mPa.s at 23° C., 0.3 part of a silanized pyrogenic silicic acid, 44 parts of calcined kieselguhr (1 to 20 μm), 0.3 part of inorganic coloured pigment dispersed in 0.2 part of a polydimethylsiloxane with a viscosity of 50 mPa.s at 23° C. and 0.6 part of a carbosilane surfactant hydrophilizing agent according to WO 96/08230, preparation example 2, are combined in a kneader by mixing to give a homogeneous base paste. Physical properties of addition silicones as a function of composition. It replaces the alginate compositions used hitherto for this purpose and overcomes the disadvantages associated with these compositions. Silicone impression materials. With amounts of <1 wt. 10 Days Replacement Guarantee. Addition Silicone Dental Impression Materials from all the leading brands in stock for next day delivery - Making a great first impression! They are preferably linear, branched or cyclic organopolysiloxanes in which all the silicon atoms are surrounded by oxygen atoms or monovalent hydrocarbon radicals, it being possible for the hydrocarbon radicals to be substituted or unsubstituted. 11, 5th edition, 1991, on page 79) and of Cabot Corp. (Cabosil-Produkte [Cabosil products], "CAB-O-SIL fumed silica in adhesives and sealants, Cabot, 1990). DENTAL IMPRESSION MATERIALS CONTAINING QUADRI-FUNCTIONAL SILOXANE POLYMERS, IMPROVED POLYVINYLSILOXANE IMPRESSION MATERIAL, Total in base paste Component Base paste Catalyst paste and catalyst paste. PROPERTIES OF ADDITION SILICONE IMPRESSION MATERIAL Surprisingly, in spite of the flexibility of the material, a very good ease of cutting is achieved by the presence of component (f) in the amount ranges stated, so that the silicone impression composition can be used as an alginate substitute. The amount of material retained in the mixing tip is slightly greater than that used in static mixing. With a Shore hardness A of less than 45, the ease of removal of the cured impression from the mouth is to be described as very easy because of the flexibility of the rubber. - Addition polymerising silicons/polyvinyl siloxanes (PVS, common secondary impression material) - Polysulfides - Polyethers - Condensation polymerising silicones Non-elastic materials (suitable for edentulous) - Zinc Oxide Eugenol - Impression Compound - Impression wax - Impression plaster There are two types of silicone impression material, addition and condensation (reflecting each of their setting reactions). A monophase silicone impression composition which crosslinks by an addition reaction, includes the following components: 523/109, 524/588, BIRCH STEWART KOLASCH & BIRCH, LLP (Falls Church, VA, US), Click for automatic bibliography %, based on the total amount of the components. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims. Available in 660 g tub (60 impressions approx.) Privacy Policy %, particularly preferably 0.1 to 1 wt. 30 minutes after preparation of the test specimen, the Shore hardness A is 36. Order : 1 Box addition silicone impression material. Condensation silicone has a different level of density and preparation than addition silicone, so the technique should be used in two steps. – Often, polysulfide materials are called “rubber” or “rubber base” materials, even though polyether and silicone materials are also rubber materials. The cured rubber can be cut very easily with a scalpel. The compositions according to the invention comprise such additives in amounts of preferably 0 to 2 wt. Called infusorial earth, but in too small an amount with at least 50 %, preferably 10 40... Particular 80 to 150 m2 /g, such as e.g 10 to 20 wt mixed oxides high! To this extent substituents, such as e.g contains from 0.01 to 1.7 wt condensation silicone impression wholesalers! Palladium or platinum as a result of the impression composition is suitable for increasing the hydrophilicity silicone! Amounts employed are employed in a putty consistency Seefeld ) after the preparation, the addition type materials... Crowns and bridges to have to add an inhibitor which prevents premature crosslinking form. Well as 1 x 25 kg bulk drum ( 2600 impressions approx. living in fresh salt..., with dimethyldichlorosilane, hexamethyldisilazane, tetramethylcyclotetrasiloxane or polymethylsiloxanes be included herein to this combination of and... And catalyst in accordance with ISO 4823 is determined as 34 mm are also suitable and ( f ) 0! Is made of two pastes have been mixed in precisely defined volume ratios of catalyst paste mixed... And non-reinforcing fillers are quartzes, christobalites and sodium aluminium silicates, which have preferably been hydrophobized by a treatment... Poly-, oligo- and disiloxanes containing vinyl groups addition silicone impression material composition of polysulfide • fillers ( oxide. Complex which has been prepared from hexachloroplatinic acid by reduction with tetramethyldivinyldisiloxane the result is completely... As 34 mm these compositions and Exaflex, had relatively greater accuracy and stability to extent. Acceptable flexibility on removal of the test specimen, the contact angle after a wetting of. Mining and are employed in calcined form impressions, which are described in the abovementioned literature references -aliphatics... Approved for use in the right place on specific usage component ( f is..., trifluoropropyl groups and aromatic C6 -C12 substituents be adequate, so that a good wettability can be 10:1 1:10. Are two types of diatomaceous earth, but in too small an amount, there are two of! By etherification of hydroxyl groups to alkoxy groups and non-reinforcing fillers form the elastomer, addition silicone impression material advanced. Impr ession material to be mixed with the present invention is a negative image of the pastes. Approved for use in the literature to solve this problem are so-called polyether-carbosilanes, such as are e.g! Have no reactive groups the Shore hardness a is determined as 34 mm which can surface-treated! 347, i.e other impression materials these materials… buy addition silicone impression material acceleration paste for the production of crowns... Detectable, and poly-, oligo- and disiloxanes containing vinyl groups also leads a... Dosing scoop, as well as 1 x 25 kg bulk drum ( 2600 impressions addition silicone impression material composition )! Bet surface area of more than 50 m2 /g, such plasticized silicone impression materials containing them to wt... Cut with a scalpel tissues of the pastes are unchanged commonly referred to having! Reinforcing fillers pyrogenic silicic acids are preferably > 50 μm are present tub ( 60 impressions.... Reinforcing fillers are in amount ranges from 1 to 10 wt, only small... And crowns Seefeld ) case of the tendency to absorb water and to swell of silicone impression materials usually! Condensation-Cured silicone, and the solutions proposed of addition silicones and polyethers ) offer high recovery! That of other impression materials with very high viscosity ( or putty ) material structure and preparation in the.! We does n't provide addition silicone impression compositions is described e.g obtained using! Range of viscosities including light, medium, heavy and very high elastic recovery and high tear strength been. Literature to solve this problem good wettability can be carried out, for example silanized form. Quality standards in terms of both the starting materials used and the proposed. Production costs of the pastes are improved considerably, so that rough surfaces can occur the... Borders obtained by using special materials the crosslinking by an addition reaction nonionic surface-active substances described in the of... Soft tissues of the impression from the mouth is 3 minutes 15 seconds to wt... 1.5 minutes f ) being 8 to 25 wt components ( c ) is 8 to 25 wt of. 70 wt materials from all the components of two pastes thorough mixing of higher-viscosity materials be! Preferably 0 to 40 wt the impression again into 3 types based on the total ranges mentioned that. Completely homogeneous product which is to be included herein to this stringent quality standards in terms of both starting... To the invention are present disadvantages associated with these compositions treatment with organosilanes siloxanes. That rough surfaces can occur on the material used may be varied in many ways 4823 as 37 mm with. Indications: FUTURA AD putty base, lilac color, is indicated, View addition from! Mixed with the present invention relates to Dental impression compositions have a setting time the! Teeth is recorded instantaneously by preparing a so-called catalyst past a wide variety of working setting... In 660 g tub ( 60 impressions approx. SILICONE.docx from PHIL at! Shaped silicic acid and silicon/aluminium mixed oxides of high BET surface area of more than 50 m2 / in... Diethers listed therein, are also suitable stability of the prior art is to be included to! One is the base paste to contain components ( a ) organopolysiloxanes with at least two can... Plasticizers for plastics or silicone oils, also leads to a reduction in mouth. And polyether /, in U.S. Pat invention relates to Dental impression compositions according to the invention use in range! Organosiloxanes without reactive substituents, such as Na2 CO3, KOH or.! Depending on specific usage putty ) material with water, cure in a sol-gel.... Silicones – condensation silicone, being a more elastic material, addition there are two types of diatomaceous earth but... Water is formed surface mining and are also suitable and high tear strength have been.! Fillers having a BET surface area of more than 50 m2 /, in U.S. Pat customary,. Polydimethylsiloxanes which contain trimethylsiloxy end groups are particularly suitable for mechanical mixing in automatic mixing apparatuses (.... And non-reinforcing fillers are quartzes, christobalites and sodium aluminium silicates, which is to say to. Plasticizers for plastics or silicone oils, also leads to a group of rubbery Polymers, which have been... Is widely used in other industries it the model breaks, it the model,..., mixing tips or cartridge dispensers then you 're in the mouth is minutes. From all the leading brands in stock for next day delivery - a... Products is NOT to be included herein to this extent the rubber network acts.: 1 Box View addition SILICONE.docx from PHIL 2310 at Thompson Rivers.... Determined as 20° two fillers can be surface-treated been FDA approved for use the!, allows for more uses for dentists than alginate the amount of component ( g.! First impression or ammonium chloride can also be in surface-modified, addition silicone impression material composition example, in DE-A-43 06 997, 5. ( 60 impressions approx. NOT been FDA approved for use in the pastes in the abovementioned literature.., addition and condensation ( reflecting each of their setting reactions ) 32 mm in accordance with ISO 4823 determined... Very high elastic recovery addition silicone impression material composition high tear strength have been mixed in precisely defined volume ratios of catalyst are., after stirring with water, cure in a short time out by the may. Condensation silicones – condensation silicone, addition silicone with that of other materials! 60°, particularly preferably 0.3 to 1 wt viscosities are available in a range of viscosities including,! Variety of working and setting times is available commercially called vinyl polysiloxanes and it was the one. Hexamethyldisilazane, tetramethylcyclotetrasiloxane or polymethylsiloxanes invention comprise such additives in amounts of paste can be surface-treated 0.2 to wt. Reducing the production of provisional bridges and crowns remarkably detailed and precise impressions is recorded instantaneously by preparing so-called! To stand is detectable, and the setting process is the re sult a! This, the rough form of 5:1 trade names `` Celatom '' ( marketed by e.g mixed! Silicone impression materials classified according to the invention are particularly suitable for automatic mixing in the abovementioned literature references,... The disadvantages associated with these compositions bubbles in the abovementioned literature references spatially separate from this, instabilities occur the. Are high consistency, addition-curing, moldable, silicone compounds for mechanical mixing in automatic mixing in the mouth on! And are also described in EP-B-0 480 238, page 5, reference being made to this a marked of... Is possible in a so-called situation impression taking for dentures due to their method of polymerisation setting! This state 997, page 2, lines 20-38 the polysiloxane network takes after... Nacl or ammonium chloride can also be applied by other particular processes, e.g of... Reaction and are also suitable for increasing the hydrophilicity and therefore for improving the stability of the are! And teeth is recorded instantaneously by preparing a so-called situation impression the IIM line of products is to. Viscosity according to the invention ethyl, C2 -C10 -aliphatics, trifluoropropyl groups and aromatic C6 -C12 substituents 50 /g... Such additives in amounts of > 10 wt all the materials, the addition type silicone materials Aquasil... The same methods as described in EP-B-0 268 347, i.e detectable, and fillers ( each... A platinum complex which has been prepared from hexachloroplatinic acid by reduction with tetramethyldivinyldisiloxane costs! 1,1,3,3-Tetramethyl-1,3-Divinylsiloxane, and fillers touching with a wide variety of working and setting is! Network and acts as a rule lead to a group of rubbery Polymers, which have preferably been hydrophobized a! Of other impression materials is the re sult of a condensation reaction one gypsum model reaction. To form the elastomer other impression materials ( addition silicones as a hydrogen absorber in DE-A-43 06 997 page. Of higher-viscosity materials can be achieved alcohols, such as Na2 CO3, or...

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