In March, I attended the annual meeting of the Academy of osseointegration, AO, in Washington, DC. Basically, all the famous international oral implant manufacturers were present. On the morning of the first day, each manufacturer hired experts in oral implantology to give lectures on clinical aspects of implantology, and there were about 8 large rooms. In the afternoon, each expert gave a 30-minute lecture, and the content was indeed very good, mainly on the aesthetic restoration of implants and bone defect repair. On the second day, two experts PKed the same problem, for example, one talked about the use of restorative methods to solve difficult cases of bone defects or poor three-dimensional position of implants, that is, the use of gingival porcelain, resin and other restorative methods to achieve aesthetic results; the other expert then talked about the use of surgical methods to correct bone defects or gingival recession after implant surgery, the problem of exposure of the rough surface of the implant. Then there is the traditional taking of impressions with impression materials and the use of digital technology to take digital impressions directly in the mouth. In this way, all aspects of a problem are covered thoroughly. It is worth attending such a conference to hear many different opinions and perspectives. There were also demonstrations of various clinical operations, such as the operation of digital oral impressions, GBR technology, etc. He Fuming, Department of Oral Implantology, Affiliated Stomatology Hospital, Zhejiang University School of Medicine