Dental implants are more serious after three days of bone grafting is considered to be a normal phenomenon, may also be related to infection. 1. Normal phenomenon, generally after dental implant surgery due to the gum tissue is stimulated, may lead to tissue fluid oozing, so this symptom will occur, do not need to be overly nervous, after a period of time will gradually recover. 2. Infection, if there are bacteria and viruses or other pathogens invading after dental implant bone grafting, more serious symptoms may appear after infection. Normally, you need to observe more about the recovery of your body, and go to the doctor for regular checkups. If there are symptoms of infection, you need to go to the doctor for checkups and treatments in a timely manner.