Dental implants in general need 3 to 4 months to wear crowns, but there are special circumstances can be immediate wear dental restoration, for the need for full-mouth restoration of the situation may require more than half a year to wear crowns. 1. General situation: generally routine implant surgery, the implant and the human body’s own alveolar bone needs to go through a period of natural healing to achieve basic stability, in which the maxillary alveolar bone due to osteoporosis, generally after 4 to 6 months to wear crowns, and the mandibular alveolar bone bone is dense, the need for 3 months to be able to wear crowns restoration. 2. Special case: If the patient’s own alveolar bone is in good condition as well as having good physical fitness, and has the need for immediate restoration, the application of chairside 3D technology can be considered for immediate production of prosthesis after completing the wearing of dental crowns. Patients who need full mouth multiple dental implant restoration, considering the jawbone to withstand too much pressure, need more than half a year to wear crowns.