Postnatal toothache may be caused by factors such as mental tension, improper diet, lack of attention to oral hygiene, and changes in hormone levels in the body. 1. Mental tension: some women are in a state of emotional depression and mental tension after giving birth, and are prone to insomnia. Insufficient rest will easily lead to a decline in resistance, which will in turn lead to toothache. 2. Improper diet: If you don’t pay attention to your diet after giving birth and eat some hot food, it will easily lead to fire and toothache. 3. not pay attention to oral hygiene: some women after giving birth, due to emotional depression and other reasons, resulting in irregular life and routine, the frequency of brushing may be relatively reduced, resulting in food residues left on the surface of the teeth, breeding a large number of bacteria, triggering gingivopapillary inflammation, pulpitis, resulting in toothache. 4. Changes in hormone levels in the body: When a woman is pregnant, the hormone levels in her body fluctuate greatly, which may result in bleeding gums and toothache. Women need to pay attention to a light diet after delivery, try to eat less or not eat spicy and stimulating, greasy food, pay attention to oral hygiene, adjust the mood and daily routine. If the toothache is more serious, you should go to the stomatology department of the hospital in time.