Dental repair material and preparation method thereof

The invention discloses a dental repair material and a preparation method thereof. The preparation method includes the following steps that 1, enamel or dentine or a titanium sheet is soaked in a phosphoric acid aqueous solution or a mixed aqueous solution of hydrogen peroxide and phosphoric acid, and the treated enamel or dentine or titanium sheet is obtained; 2, calcium nitrate hydrogel containing xanthan gum powder and an aqueous solution of phosphate ions and fluorine ions are mixed to obtain a mixed solution, the treated enamel or dentine or titanium sheet is soaked in the mixed solution for a reaction, and the dental repair material can be obtained. The dense dental repair material with a human enamel bionic structure is grown in an environment similar to the physiological conditions of the human body. The dental repair material has hydroxyapatite hexagonal prism crystals and enamel crystalline pillar microstructures, and the mechanical property of the dental repair material is similar to that of natura