Fissured tongue is commonly associated with an underlying condition, and so whether fissured tongue can be cured in these cases may depend upon the related condition.
In some cases, fissured tongue occurs as a result of an irritant, such as tobacco, spicy food, or toxin. If an irritant causes fissured tongue, avoiding the irritant may prevent its occurrence. In still other cases, fissured tongue results from trauma to the tongue, such as chewing or biting down on the tongue. The chewing may occur during sleep or stress, in which case preventive measures can be adopted.
Often the tongue will heal on its own, but the problem may happen again.