Abstract: Objective: To provide references for China's related technology research and patent layout based on the analysis on the global patent application status of 3D printing technology in stomatology. Methods: The article uses patent analysis method, adopts the Intelligent Bud Patent Analysis Platform, and combines manual indexing and statistics to systematically analyze the patents of global 3D printing technology in stomatology. Results: The patents application of 3D printing technology in the field of stomatology is growing rapidly, China, the United States and South Korea have a large number of patent applications in this field and the Chinese market has been valued by foreign institutions. Oral prosthesis manufacturing, dental implant tools, and orthodontics are hot areas. SLA, DLP and SLM, technologies are the fastest growing technologies in the field of stomatology of 3D printing technology. The processes, products, and data processing of 3D printing are also areas that have received much attention in recent years. The patent layout of 3D printed materials and special equipment for manufacturing workpieces or products from metal powder are emerging, which is worth strengthening the layout in the future. Conclusion: The application of 3D printing technology in the field of stomatology is emerging and has great potential. China has the largest number of patent applications in this field, but the quality, needs to be improved. The research trend of advanced foreign institutions should be payed much attention to. Not only the application of invention patents with high originality but also the lay out of utility model patents related to the core products should be concerned about. A comprehensive layout of patents in the process of 3D printing, products, and data processing, relevant materials and preparation equipment should be pushed forward, to ensure the safe production of core products in an all-round way. Industry-universityresearch cooperation should be promoted to improve the quality of patents. Overseas patents should be applied to guarantee the export of the products.

Key words: 3D printing technology, stomatology, patent analysis