The present invention relates to a digital three-dimensional tooth model system technically characterized by comprising: an occlusion unit on which a tooth model to be scanned is installed, the occlusion unit being mounted in a scan area of a tooth model scanner for scanning a tooth model and generating virtual 3D tooth model data； an output portion interworking with the occlusion unit and configured to output an image obtained by matching position data of the tooth model scanned by the tooth model scanner and data regarding an anatomically ideal position stored therein； a reference portion comprising vertical and horizontal lines in analyzable types； a tooth model portion comprising a maxillary tooth model and a mandibular tooth model designed by a digital tooth design program, each of the maxillary tooth model and the mandibular tooth model constituting a single modularized entity with the reference portion； and a tooth analysis portion interposed between the maxillary tooth model and the mandibular tooth model. The present invention is advantageous in that, when a digital three-dimensional tooth model is fabricated at a dental clinic or a dental laboratory, the tooth model is accurately positioned in a unique scan area by using a necessary tooth model scanner, thereby improving the accuracy, and the digital three-dimensional tooth model and a reference line that enables ideal anatomical positioning are modularized such that the tooth model engages in the ideal position quickly and accurately, thereby ensuring good occlusion and pronunciation.La présente invention concerne un système de modèle de dent numérique en trois dimensions techniquement caractérisé en ce qu'il comprend : une unité d'occlusion sur laquelle se trouve un modèle de dent à balayer, l'unité d'occlusion étant montée dans une zone de balayage d'un scanner de modèle de dent pour balayer un modèle de dent et générer des données de modèle de dent 3D virtuelle； une partie de sortie en interfonctionnem
