One of the most common mistakes made when trying to treat mouth sores at home is to apply salt directly to the wound. Although this is a common practice, applying salt on an open sore can further irritate the tissues and prolong the healing time. Similarly, acidic substances such as vinegar or lemon will burn the wound more and cause damage. In addition, the use of hearsay herbal concoctions, unhygienic practices or medications recommended by others can lead to serious infections.
Another mistake is brushing the mouth too often or pressing directly on the wound. Such behaviors delay healing and increase pain. In addition, if spicy, acidic and very hot foods are avoided while the canker sore persists, the existing lesion will inevitably enlarge.