DenRoboTrack is a smart device for monitoring and displaying a patient's teeth gap in orthodontics, through a computer program and image system (2D & 3D) for measuring and showing diagrams of changes in the process of treatment. In each step of orthodontic treatment, changes in the size or distance of the teeth can be documented and showed through a set of diagrams and 2D &3D figures of tooth. Through the fingerprint of each patient, the device can be adjusted for each patient aromatically and all patient's documents can be displayed and personalized.