See your dentist as soon as possible, preferably the dentist who placed your dental implant, for a thorough evaluation! If the tooth implant is loose, You need to see the oral surgeon, for possible extraction or salvaging the dental implant via surgery and bone graft. If the post ( the abutment) is loose, it can be possibly due to screw and better prognosis to salvage your dental implant and place a new dental crown.
-- Dr Anthony Mobasser Reconstructive & Cosmetic Dentistry 9201 W. Sunset Blvd suite 618,Los Angeles Ca 90069 P : 310-550-0383