Dental treatment should generally take place every six months, but it is occasionally recommended beyond a routine cleaning. Restorative dentistry involves the diagnosis, prevention and treatment of oral diseases. Your dentist may suggest a treatment plan to restore teeth that are decayed, chipped, cracked, discolored or even missing. Teeth that are affected by any of these developmental or trauma-related defects can qualify for restorative care. Whether it's a filling, crown, implant or bridge, there are several options available depending on need.