During the evening, toothaches begin to hurt more and it is due to several different reasons.   1. More blood flow going to the area The main reason why toothaches occur to be more prominent at night when we are supposed to be sleeping is due to the sleeping position, we are in. Laying down causes more blood to rush to our heads, which puts extra pressure on the most sensitive areas including the affected teeth in our mouths. We do not feel that painful throbbing sensation during the day as we are constantly either sitting or standing, so the blood isn’t as concentrated on one area.   2. Brain has fewer distractions At night, as we try to rest, the brain is becoming more aware of the sensations within our bodies due to fewer distractions occurring around us. We tend to think that the toothache is worse at night, but in reality, it is because our minds are clear, and we are more relaxed, making the pain sensation worse than when we are fully awake doing things throughout the day.   3. Late-night eats If you have had any sweets after dinner, or even indulged in a late-night snack, some of those foods tend to get stuck in between the teeth and even the gums. At night is when plaque tends to thrive on leftover and forgotten teeth that have not been brushed that have sugar and other late-night meals on them, which often causes the teeth to become quite aggravated.   4. Unconscious teeth grinding At night, many will unknowingly begin to grind their teeth. They may wake and stop, but many will grind and put even more stress on the teeth, gums, and jaws. This can cause severe issues to the mouth which after a period of time will need proper care and treatment.