Silicone rubber impression material and preparation method

Abstract

The invention discloses a silicone rubber impression material and a preparation method, and relates to the field of dental medical materials. The material contains filler with silazane, water and a base material; a first component composed of H-containing silicone oil mixed with an inhibitor is added to the filler; a second component formed by a platinum catalyst mixed with ethylene oil is added to the filler. According to the provided silicone rubber impression material, mixing and curing processes of the material cannot be affected even if medical latex gloves are used, so that the siliconerubber impression material can be operated directly with the latex gloves, changing of the gloves or hand-to-hand operation is not needed, and cross infection is controlled.

Description

technical field [0001] The invention relates to the field of medical materials, in particular to the field of dental medical materials. Background technique [0002] Impression materials are the materials used to make negative molds in dental treatment, and alginate impression materials are still widely used in my country. This type of material is a type of hydrogel impression material, which has the disadvantages of large deformation, poor dimensional accuracy, and difficulty in sterilizing the impression. However, silicone rubber impression materials have been widely used in developed countries such as Europe and the United States. This type of material has the characteristics of high dimensional accuracy, no deformation, and can be repeatedly poured into the working model. For example, DMG, 3M, Heraeus, and Dentsply all produce silicone rubber impression materials. However, there are three existing mixing methods for silicone rubber impression materials: organic mixing, ...

AI Technical Summary

Problems solved by technology

However, there are three existing mixing methods for silicone rubber impression materials: organic mixing, gun mixing and hand mixing. Among them, the first two are less used in China due to the high cost of use. Domestically, hand-mixing silicone rubber materials are mainly used. , but during the mixing process, medical latex gloves will affect the mixing and curing process of the material, thus affecting the clinical operation and the accuracy of the female mold

Therefore, in clinical use, bare-handed or replaced with non-latex gloves are used for operation, which is not conducive to the control of cross-infection, and replaced with non-latex gloves for operation not only brings troubles to clinical application, but also causes a certain amount of waste (the end of the operation) After that, it usually needs to be replaced with medical latex gloves to continue the treatment)

[0003] At present, the Chinese patent document CN103655212B discloses a silicone rubber putty type oral impression material applied to the initial impression at room temperature, which uses vinyl silicone oil as the base polymer, hydrogen-containing silicone oil as the crosslinking agent, and adds a reinforcing agent and a solubilizing agent. An impression material with good elasticity, toughness and strength, high plasticity, small volume shrinkage, high replication accuracy, good chemical stability, good hydrophilicity, simple operation and easy demoulding has been obtained. However, the During clinical operation, the material should not come into contact with latex gloves, otherwise it will cause catalyst poisoning and cause the impression material to not cure

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