A dental mold and molding method comprising (a) obtaining the original digital dental model of the patient and distinguish a normal area and a to-be corrected area (b) Analyze and predict various stages of dental displacement of the to-be corrected area and (c) based on the prediction, forming one set of dental mold corresponding the normal area, and multiple sets of dental molds corresponding different stages of the to-be corrected area. By substituting different sets of mold corresponding to the to-be corrected area according to different states of correction, one is able to model the entire course of correction without having to form a complete set of mold in each stage. Thereby reduce cost and save storage space.一種齒模及其成型方法,包含(a)獲得患者牙齒的初始數位齒模,並予以區分出一正常部位與一待矯正部位,初始數位齒模相對應於該待矯正部位切割出一輔助數位齒模,從而形成一相對應於正常部位之主數位齒模;(b)評估患者牙齒之待矯正部位於矯正過程中預期的變位情形而自動排牙產生多數模擬數位齒模;以及(c)依據主數位齒模及輔助數位齒模分別製作出一主實體齒模及一輔助實體齒模,且依據該等模擬數位齒模製作出多數模擬實體齒模,主實體齒模可與輔助實體齒模或任一模擬實體齒模組合成一完整牙齒模型以供使用。藉此能降低成本,也能節省儲放空間。2‧‧‧主實體齒模21‧‧‧正常部位22‧‧‧待矯正部位3‧‧‧輔助實體齒模4‧‧‧模擬實體齒模