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.
An Explanation of Benefits (EOB) is a form or document that may be sent to you by your insurance company several months after you had a healthcare service that was paid by the insurance company. You should get an EOB if you have private health insurance, a health plan from your employer, or Medicare.