Over the past few months i have had a few mouth abscesses and they keep coming back do you know why?

There can be several reasons, but the one that is most common is a vitamin deficiency or an allergy. My mom used to get this and the doctor told her she had a vitamin deficiency. She was given vitamins to take and it cured her.

You said abscesses, do you mean ulcers, do you mean the inside of the mouth? More information would be needed to attempt an accurate answer. Go to a dentist or physician who can refer you to a dentist. In the meantime, I would gargle with some antiseptic mouthwash that is not too irritating, like hydrogen peroxide. I really hope you are talking about ulcers and not abscesses, because abscesses are cystlike and contain fluid like pus and blood.

Do you mean canker sores? They can be miserable - they can be caused by too much acidity in your diet, amoung other things. Try rinsing out your mouth with warm salt water or Listerine - hurts like heck, but it does help.

An abscess is caused by an infection that is trapped in a closed space, build up pressure, and then forms a pocket in the bone (by destroying the bone) and eventually will form a "pimple" and pop - leaking pus and infection into your mouth. Much like a splinter left in your hand, it will get better with antibiotics, but until the splinter is removed, the infection will come back. In teeth, the pulp (nerve) of the tooth is located in the middle (like creamy filling inside a filled donut). When the nerve dies, it begins to decompose. The white blood cells rush to the area to try to help. Unfortunately, until the pulp is removed, you will continue to loose more and more bone, and may loose teeth on both sides of the infected one. The procedure to remove the nerve is called Root Canal Therapy, and is painless once you get numb. However, infection lies between the anesthetic and the nerve. Getting them numb is often difficult. Antibiotics are regularly given first to reduce the infection as low as possible. Then the procedure is done just after antibiotics before the infection builds back up again. Once the patient is numb, the nerve can be removed, virtually eliminating the pain. There is some pain after the procedure due to the ligament supporting the tooth, bone damage, and tenderness in the gum tissue surrounding the tooth. Even this pain should gradually disappear after several weeks.

Hope this helps!

You could have a virus. You should check with your dentist and see what they recommend.