The ulcers are located on the buccal membranes and are superficial wounds that develop inside the lips, the cheeks as well as on the tongue or the palate. Although they are often benign, they are annoying and painful !

The CHD is happy to give you some advice about this affection that affects about 1 person out of 5 at least once during his or her lifetime.


What does an oral sore look like ?

The ulcers are round or oval in shape, with well-defined edges. They are whitish in colour, slightly grey or yellow. The ulcers have a variable dimension, when they are minor, they have a diameter of less than 10 mm and heal in about 2 weeks. The more severe can reach a diameter greater than 10 mm and their healing lasts almost a month and a half.

What causes the ulcers ?

Their exact cause has not yet been determined but one thing is for sure, the ulcers are not contagious! Some argue that they would be partly hereditary and can be caused in particular or aggravated by the following elements :

  • Tiny wounds of the mouth
  • Fatigue
  • Stress and anxiety
  • Consumption of acidic food or drink
  • Food allergies
  • Malnutrition (vitamin and mineral deficiency)
  • Taking medications
  • Smoking cessation
  • Hormonal changes
  • Bad habits (nail biting)

How to treat oral ulcer and reduce pain ?

  • Apply a gel or ointment (reduces inflammation and disinfects)
  • Gargle with salt water
  • Melt an ice cube on the sore
  • Avoid alcohol-based mouth baths
  • Limit the consumption of spicy, acidic or hard food

How to prevent an ulcer ?

  • Use a soft toothbrush and non-abrasive toothpaste
  • Avoid chew the inside of the mouth
  • Have a good sleep hygiene
  • Limit alcohol consumption
  • Take the time to chew your food well

To reduce the risk of developing ulcers, adopt a healthy lifestyle and maintain an exemplary dental hygiene routine that includes regular controls and scaling with the hygienist and the dentist.