Dental implants have a small hole after removing the threads, it may be a covering screw or implant failure. Dental implant consists of three parts: implant, abutment and crown. The first step of conventional two-stage implantation is to implant the implant into the jawbone, and then a cover screw is placed on top of the implant, which mainly promotes the stability of the implant and prevents the gum tissues from entering into the inner part of the implant. When the gingiva is too thin, the overdenture screw may be exposed, but no special treatment is needed, and oral hygiene is sufficient. In addition, if the implant does not form a good osseointegration and the implant fails, it may also lead to a small hole in the gingival surface. It is necessary to remove the implant and re-implant it after the bone has healed well. It is recommended to go to the dentistry department of a regular hospital and follow the advice of a professional physician.