Implant crowns and other prosthetic (false) tooth replacements are made to be remarkably failsafe systems. They are removable and replaceable (only by your dentist), so that if damage or wear necessitates replacement, this can be accomplished without affecting the implant(s) or attachment to the bone.
Nevertheless, implants do require maintenance. It is important to practice good daily oral hygiene, including brushing and flossing to control bacterial biofilm. It is also important to see your dentist and dental hygienist. Special instruments are necessary to clean dental implants that will not damage their metal surface beneath the gum tissues. Your dentist will need to monitor your implants to make sure the integrity of the osseointegration is stable, and that the implant crowns, bridgework or dentures are functioning adequately.