What are some potential problems associated with tooth implants?

Potential problems associated with tooth implants include infection, injury to blood vessels or adjacent teeth, nerve damage and sinus problems, according to Mayo Clinic. Some patients experience incorrect positioning, fractured implants or negative reactions to anesthesia, HowStuffWorks explains. However, complications occur in less than 5 percent of all implant procedures.

For example, infections develop with tooth implants because surgeons expose patients' gums and jawbones, states HowStuffWorks. After implants have fused to bones, surgeons open the gums again to place the crowns. Infections of gums or bones sometimes occur when bacteria gets into body tissues while patients heal, Tischler Dental reports. Bacteria also enter the body through improperly fitted implants and crowns.