Canker sores, also known as mouth ulcers, or aphthous stomatitis, can form on the gums, inner cheeks and lips (anywhere inside of the mouth). Canker sores, while annoying, are common, and usually heal in a week or two.
The length of time that doctor's offices need to keep records varies by state. 5 years is a common requirement. Explanations of benefits (EOB's) are sent by the insurance companies to the patient, not to the doctor's office. 4/11/13- Actually, insurance companies send EOB's to both entities, patient and doctors.
Florida hospitals shall retain inpatient medical records, emergency room records, and outpatient/clinical records for seven years after the last entry. X-ray films are to be retained for seven years. Nursing homes must retain medical records a minimum of seven years after the last entry or retain until 24 years of age, whichever is longer.