Dental implants are usually ready for phase II surgery 3 to 6 months after phase I surgery. 1. Implant surgery, if a segmental implant is used and sufficient initial stability is not achieved when the implant is inserted, it is necessary to bury the healing and wait for the implant to osseointegrate, and then carry out the phase II surgery, i.e., the implant is connected out of the abutment and exposed in the oral cavity. 2. For simple implants, if no bone grafting is performed at the same time as the implant, the second stage of surgery can be performed after about 3 months of healing. If bone grafting surgery is performed during the same period of implantation, such as guided bone regeneration and maxillary sinus floor elevation surgery, then it will generally take about 6 months of healing before the second stage surgery is performed. It is advisable to consult a medical professional on how long it takes to do the second stage of dental implants.