Canker sores develop when small ulcers form inside your mouth, typically on the soft tissues of your cheeks, lips, or tongue. These painful lesions emerge from minor injuries, stress, certain foods, or nutritional deficiencies. While canker sores heal on their own within one to two weeks, dentists recommend several evidence-based approaches to manage pain and speed recovery.
Over-the-counter topical treatments work effectively for most people. Hydrogen peroxide rinses cleanse the area and reduce bacterial growth. Topical anesthetics containing benzocaine numb the sore temporarily, offering relief during eating or speaking. Antimicrobial mouthwashes help prevent secondary infections that could delay healing.
Home remedies provide additional relief. Rinsing with salt water multiple times daily reduces inflammation and kills bacteria naturally. The Cleveland Clinic notes that salt water creates an inhospitable environment for infection-causing organisms. Apply ice directly to the sore for 15-minute intervals to numb pain and constrict blood vessels, limiting swelling.
Dietary adjustments matter significantly. Avoid acidic foods like citrus fruits, tomatoes, and vinegar-based dressings, which irritate open sores. Skip spicy foods and hard textures that cause additional trauma. Milk-based products, soft fruits, and soup provide nutrition without aggravating the area.
Nutritional deficiencies link to canker sore formation. Low levels of vitamin B12, zinc, folate, or iron can increase susceptibility. If you develop canker sores frequently, ask your dentist about testing for these deficiencies.
Stress management reduces recurrence. Research shows that emotional stress triggers canker sore development in susceptible individuals. Prioritize adequate sleep and stress-reduction techniques.
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