Long-term dentate tongue exists body obesity or congenital megaglossia, or chronic inflammation of the tongue. 1. Obesity or congenital megatongue: obesity, tongue enlargement, or megatongue, the space in the mouth becomes smaller, the tongue is compressed by the teeth on both sides, appearing teeth marks, this situation is physiological, do not need special treatment. 2. Chronic inflammation of the tongue: the body is allergic to some food swelling, or due to other physical and chemical factors stimulate the emergence of chronic inflammation, tongue enlargement, compressed by the teeth, teeth marks, you need to remove the sharp tip of the teeth, to remove the local stimulus, allergy can be taken orally loratadine and other anti-allergy drugs. Long-term teeth trace tongue need to consult a doctor in a timely manner, under the guidance of the doctor for examination, to identify the cause of the disease, standardized treatment, to avoid delaying the condition.