![]() ![]() The fixed prosthesis modeling wax in its soft state must be free of lumps, this indicates that it is composed of ingredients that are mixed evenly. What to look for when choosing a good modeling wax? Type II: is softer, is used indirectly in the stone model, and is more fluid.Type I: it is harder, is used directly in the mouth and has low levels of fluidity.Regarding its composition, paraffin is usually its main component, reaching from 40 to 60% of its weight, but since paraffin tends to flake and does not have a smooth and shiny surface as required by wax scales, it is necessary that its remaining weight percentage be other waxes and natural resins as modifying agents. The wax is removed by heating and melting it, and finally, the mold is prepared to receive the molten alloy. This process in simple terms consists of creating a wax pattern with the desired shape, then it is lined with plaster-silica or another type of refractory material, to make a mold with a casting hole that connects the external surface of the mold with the pattern. The inlay wax or fixed prosthesis modeling wax is used to build the shape of a dental restoration on a previously prepared die in a stone model, which is then Through a laboratory process, you will transform this wax pattern into a definitive restoration made of a resistant material such as a metal alloy or porcelain. The dental waxes for patterns have three main types:ġ.1 Wax for inlays or wax for modeling fixed prosthetics We can classify waxes according to their use as: This occurs because the residual stress developed during the fabrication of the wax pattern is released. Distortion of the wax pattern: Distortion increases with time and also depends on the storage temperature.Ductility: If you increase its temperature you can stretch the wax like a wire.Residual stress: Cooling the wax under compression forces the atoms and molecules closer together and reheating the wax releases the stress, causing a dimensional change.The degrees of fluidity vary according to the type of wax, temperature and time. Fluidity: It is what happens when the molecules slide over each other.Thermal expansion: Dental waxes expand with increasing temperature and contract with decreasing temperature. ![]() This property means that, instead of having a specific melting point, they have melting intervals. Melting range: Dental waxes are made up of different molecules and although they are similar to each other, they have different molecular weights.The different types of dental waxes share the same physical properties: There is a wide variety of waxes for dental use and in general terms, we could say that most of them are made up of a mixture of waxes of animal, vegetable and mineral origin, as well as other products such as oils, fats, gums, resins, synthetic waxes and dyes. What are dental waxes and what are their physical properties?ĭental waxes are chemical polyesters of fatty acids and alcohol forming hydrocarbon chains, that is, chains of carbon atoms linked to each other and to hydrogen atoms or other radicals. In this article we will tell you everything about dental waxes and how to classify them according to their use, so that it is much easier for you to find the most appropriate dental wax for each clinical or laboratory application. Did you know that dental wax is used in many different ways? And not only that, but they all have their own characteristics, properties, compositions and indications. ![]()
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