1. implant doctor's experience: the precision of implant surgery and repair technology is extremely high. Plastic surgeons must go through special study and training and have certain clinical experience in order to correctly complete every step of implant treatment, successfully handle all kinds of special situations encountered in the treatment process, and finally ensure the long-term effect of implant restoration.

2. Selection of planting system: The planting system has strict requirements and standards in production technology, shape design, connection mode, processing accuracy, superstructure, disinfection and packaging, etc. Generally, the planting system is mainly imported, such as Nobel planting system in Sweden, Feyadan planting system in Germany, Altech planting system in South Korea and ITI planting system in Switzerland.

3. The patient's own conditions: if the bone mass is sufficient (including height and thickness), the bone density is appropriate, and the gum condition is good, the service life will be long, otherwise it will affect the service life of the denture.

4. Maintenance and cleaning of implant dentures by patients. Implant dentures should be kept clean and checked in the hospital regularly to avoid infection of tissues around implants and maintain the long-term application of implant dentures. Smoking has a negative effect on the long-term effect of implant denture.