Abstract: The present invention provides a tongue training device, which includes an elastic body, a displacement sensor and a wireless communicator. Wherein, the elastic body has a tongue inlet and an accommodating space in communication with the tongue inlet, so as to accommodate a part or a whole of the tongue of the user in the accommodating space. The displacement sensor is disposed on the elastic body to sense the displacement distance and the displacement direction of the elastic body, and generate the corresponding displacement distance signal and displacement direction signal. And, the wireless communicator is disposed on the elastic body, connects the displacement sensor and the external device, and transmits the displacement distance signal and the displacement direction signal to the external device, so as to operate the external device according to the displacement distance signal and the displacement direction signal.

Abstract: A device is provided for opening mouth. The device is custom-made through 3-dimensional (3D) printing. The overall framework is printed out after 3D-scanning the oral cavity, which meets a patient's oral shape. The present invention practically and effectively fabricates a custom-made mouth-opening device. The mouth's structure changed after surgery is taken into consideration, so that the patient can easily open the mouth with one hand. Furthermore, because the weight overall is light, the whole single-hand operation feels no heavy. The prolonged work of dental rehabilitation required by the patient is met. The device is easy to be cleaned. The feature of high material strength yet with proper softness is achieved. The comfort of use is increased for the patient with life quality enhanced. The effectiveness of rehabilitation and intervention is improved. The cost of custom-made medical material is effectively reduced.