Posted on December 16, 2025
Bellevue Overlake Dental
A toothache that flares up at night can feel sudden and intense. While it may seem like the pain “comes out of nowhere,” nighttime tooth pain is often easier to notice because you are no longer distracted by work, movement, or conversation. Lying down can also increase blood flow and pressure in the head, which can make inflammation feel more pronounced.
The most common causes include tooth decay, a cracked tooth, gum infection, or an irritated nerve inside the tooth. Sometimes the pain starts after a filling or dental work if the bite is slightly high or the tooth is still healing. Sinus pressure can also mimic tooth pain, especially in the upper back teeth.
If you are dealing with a toothache tonight, focus on reducing irritation and protecting the area. Rinse gently with warm salt water, brush carefully, and floss to remove anything stuck between teeth. Apply a cold compress on the cheek for short intervals if swelling is present. Avoid chewing on that side and skip very hot, cold, sweet, or sticky foods that can trigger nerve sensitivity.
Do not place aspirin directly on the gum or tooth. It can burn the tissue. If you use over-the-counter pain relief, follow the label instructions and consider alternating options only if your physician has said it is safe for you.
A toothache that keeps returning, wakes you up, or comes with swelling, fever, a bad taste, or a bump on the gums should be evaluated promptly. Early treatment can often prevent a small issue from becoming a more complex infection.