Preparation method of oral cavity stent material

The invention discloses a preparation method of an oral stent material. The preparation method comprises the following steps: preparing a PPDO solution, preparing a magnesium ion solution, and preparing an animal-derived collagen oral stent. Completely immersing the animal-derived collagen oral stent into the PPDO solution in the beaker, and carrying out PPDO solution treatment; the method comprises the following steps: putting an animal-derived collagen oral stent into a magnesium ion solution, oscillating in a constant-temperature oscillator, soaking in purified water, and washing the animal-derived collagen oral stent by using flowing purified water to remove free Mg < 2 + >; and freeze-drying the free Mg < 2 + >-removed animal-derived collagen oral stent, and performing irradiation sterilization to obtain a Mg < 2 + >/PPDO collagen stent material finished product for the oral cavity. According to the invention, Mg < 2 + > is added, so that the hydrogel has good biocompatibility and degradability; the PPDO