Oral scanning machine system and data filling method in process of generating three-dimensional model

The invention discloses a mouth scanning machine system and a data filling method in a process of generating a three-dimensional model, and the method comprises the steps: sequentially projecting a plurality of colors of light rays on a target object to obtain a plurality of projection images, and building an open area data graph comprising a plurality of open areas which cannot be filled according to the plurality of projection images; searching all holes in the initial three-dimensional model grid, and establishing a hole data table; removing a plurality of holes corresponding to the plurality of unfilled open areas in the hole data table according to the open area data map to form an updated hole data table; and filling other holes in the initial three-dimensional model grid according to the updated hole data table. According to the invention, a filling decision-making mechanism for forming the holes in the three-dimensional model grid is assisted by utilizing a plurality of two-dimensional image data form