Implanted half-mouth teeth do not necessarily have to be extracted, the remaining 1-2 teeth can be treated if the posterior grinding teeth have normal function. Implant half-mouth is a surgical implant restoration method in the maxillary and mandibular regions with a toothless arch or with only 1-2 teeth retained. The number of implants is reasonably allocated on the remaining alveolar bone, and routinely 4-6 implants can be placed for restoration of missing teeth and restoration of the occlusal function of the teeth. Retaining 1 to 2 teeth that normally exercise function can be used as an occlusal contact to determine the correct occlusal relationship between the upper and lower jaws for dental restoration, avoiding the emergence of dental balance problems caused by occlusal reconstruction errors. Retaining part of the normal teeth is the basic principle of dental restoration, dental implant restoration should pay attention to oral hygiene, pay attention to the occlusal balance of the teeth. For more medical knowledge about implant dentures, please consult a professional implantologist.