Dental composition and preparation method thereof

Abstract

The invention relates to the technical field of dental materials, and especially relates to a dental composition and a preparation method thereof. The dental composition disclosed by the invention consists of powder and liquid, wherein the powder comprises aluminosilicate glass powder and a calcium source; and the liquid comprises polycarboxylic acid and a phosphate radical source. According to the invention, the technical concept of combining calcium hydrophosphate with a glass-ionomer adhesive system is proposed for the first time through research, a framework system formed by silicate glass powder and polycarboxylic acid plays a role in slowly releasing phosphate radicals or hydrogen phosphate radicals, and the forming speed of hydroxyapatite is reasonably regulated, so that the mineralization effect of teeth is ensured, and the hardness of the dentin is obviously improved. Meanwhile, due to the action of the aluminosilicate glass powder and polycarboxylic acid, the dental composition can be rapidly solidified, has higher compressive strength, can completely seal dentinal tubules and rapidly solve the hemodia symptom, has no toxic or side irritation to the body, and has small damage to enamel.

Description

technical field [0001] The invention belongs to the technical field of dental materials, and in particular relates to a dental composition and a preparation method thereof. Background technique [0002] Dentin is the main component of dental hard tissue, which is composed of 70% hydroxyapatite (Hap), 20% extracellular matrix mainly composed of type I collagen and 10% liquid. Dentin is located in the inner layer of enamel and cementum, and is also the side wall of the pulp cavity and root canal, so it can protect the pulp tissue inside it and support the cementum and enamel on its surface. [0003] There are many regularly arranged thin tubes in the dentin called dentinal tubules; there are nerve fibers in the tubes of the dentine tubules. When the integrity of the enamel is damaged, the dentin can experience external cold, heat, acid, sweet and other stimuli after being exposed, and then cause short-term severe pain. This phenomenon is called dentin hypersensitivity (DH). ...

AI Technical Summary

Problems solved by technology

[0009] In terms of biological effects: biological materials, such as hydroxyapatite and calcium phosphate, are generally used to calcify dentin and isolate stimulation, but these materials have a slow effect and must be used frequently

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