Provided is a dental implant device provided with a dental implant main body and an implant fixing tool. The implant fixing tool is provided with: a portion fixed to the implant main body； and a portion fixed to a tooth neighboring an implanting portion of the implant main body, and is configured such that mechanical stimulation from the tooth neighboring the implanting portion can be transferred to the implant main body. The implant device is characterized by being installed in the subject's oral cavity so that the implant main body is inserted into the implanting portion while the implant fixing tool is fixed to the implant main body and the tooth neighboring the implanting portion.
