Causes of Canker Sores

Factors For Outbreaks 

A combination of factors contributes to outbreaks.  Triggers include:  injuries that cause lacerations of the soft tissues of your mouth, from dental work, overzealous brushing, spicy or acidic foods, or an accidental biting of your cheek or tongue.  Toothpastes or mouth rinses that contain sodium lauryl sulfate can be associated.  Food sensitivities to things like chocolate, coffee, strawberries, eggs, nuts, cheese and highly acidic foods are causes.  Insufficient intake of vitamin B-12, zinc, folic acid or iron, and hormonal shifts during menstruation and emotional stress are also causes.  Conditions or diseases that predispose:  celiac disease and gluten sensitivity, inflammatory bowel disease (Crohn's, ulcerative colitis), a faulty immune system and HIV/AIDS.

Description of Canker Sores

If you have canker sores that are unusually large, recur (with new ones developing before old ones heal), last three weeks or more, extend into the lips, cause uncontrolled pain, or cause extreme difficulty eating or drinking, then it is time to consult your dentist.  

Source:  Mayo Clinic 

Robert G. Tupac, DDS, FACP, Inc., Diplomate, American Board of Prosthodontics (661) 325-1275 | www.drtupac.com 5060 California Ave., #170, Bakersfield, CA 93309