Infection: To maintain your dental implant, follow the post-op instructions from a dentist. It is vital to have good oral hygiene because infections can cause unnecessary pain and complications.    Incomplete osseointegration: Dental implants are vital for the long-term oral health of a patient and will only work if they fuse with your bone. If this fails to happen, then you may have to go through the procedure again when that area heals.   Nerve damage: Sometimes, a dental implant is placed too close to your nerve. It can lead to long-term numbness or pain in that part of the mouth since the structure was tremendously affected, such as the blood vessel.   Implant fracture: Implants are meant to replace your teeth, but they can wear out if excessive forces are placed on them. If the implants do not withstand these pressures, they could break. When that happens, they need to be removed and replaced after a few months.