Manufacturing method of implant covering denture retention device

The invention discloses a manufacturing method of an implant covering denture retention device, which comprises the following steps of: manufacturing a retention rod at the crest of an alveolar ridge according to an intraoral molding result; the STL file is obtained according to the retention rod manufactured through scanning, the PEEK retention card is manufactured through CAD/CAM according to the scanning structure, and when the retention rod is sleeved with the PEEK retention card, the gap between the retention rod and the PEEK retention card is 0.01 mm. According to the present invention, the characteristics of good antibacterial property, good wear resistance, no toxicity and the like of the PEEK material, particularly the good retention force maintaining characteristic, are utilized to produce the integrated implant auxiliary retention covering denture retention device, such that the novel retention device with characteristics of uniform resultant force distribution and uniform and stable retention forc