In the present invention, provided is a system for transmitting and receiving patient′s dental data, orthodontics data, transparent orthodontic instrument data, and so on. Accordingly, a transparent orthodontic instrument capable of calibrating patient′s teeth can be manufactured. On a dentist′s side, the system comprises: an input unit which receives data of a dental condition； a 3D data generation unit； a coordinate system generation unit； a coordinate generation unit； a first transmission unit which transmits 3D data and a coordinate value of patient′s teeth before calibration to an orthodontist or a dental technician； a first reception unit 3D data of calibrated teeth or finally calibrated teeth； and a first conversation unit which transmits voice and images, sent and received between a dentist and a patient, in the form of speech, texts, and pictures to a second conversation unit of an orthodontist′s side. On the orthodontist′s side, the system comprises: the second reception unit which receives the 3D data of the patient′s teeth before calibration, the coordinate system, and the coordinate value of each tooth before calibration； a calibration data generation unit which generates the final calibration teeth 3D data and intermediate calibrated teeth 3D data； a second transmission unit which transmits the intermediate calibrated teeth 3D data and the final calibrated teeth 3D data to the first reception unit of the dentist side； a 3D transparent orthodontics instrument data generation unit； a 3D transparent orthodontics instrument data modification unit； a third transmission unit which transmits the modified 3D transparent orthodontics instrument data to a third reception unit of a dental technician′s side； a third reception unit which has a second conversation unit for providing, in real time, feedback of opinion including the possibility of teeth calibration, an orthodontic method, a calibration period, and orthodontics costs and receives the 3D data and the co
