Why Toothache Always Gets Worse at Night

Toothache that is manageable all day and unbearable at 2am is one of the most reliable patterns in dentistry. There is a straightforward reason for it, and the pattern itself tells your dentist something useful about what is wrong.

The reason is blood pressure in your head

When you lie down, blood flow to the head increases and pressure inside the tissues rises slightly. In a healthy tooth you would never notice. But the pulp — the nerve and blood vessels at the centre of a tooth — sits inside a rigid chamber of dentine with no room to expand. When that pulp is already inflamed and swollen, the extra pressure has nowhere to go, and it presses directly on the nerve.

Two other things compound it. Distraction genuinely does reduce pain perception, and there is none at night. And the natural anti-inflammatory hormones your body produces follow a daily rhythm that reaches its lowest point in the early hours.

What night pain usually means

Spontaneous pain — pain that arrives without you eating or drinking anything — is the clinical marker of irreversible pulpitis. The nerve inside the tooth is inflamed beyond the point where it can recover. A filling will not settle it. The tooth needs root canal treatment, or extraction if it is beyond saving.

Throbbing that keeps time with your heartbeat suggests the same. If there is also swelling of the face or gum, a bad taste, fever, or difficulty swallowing, an abscess has formed and that is genuinely urgent — not something to sit out over a weekend.

Getting through the night

None of this treats the problem, but it helps until you can be seen:

• Sleep propped up on two or three pillows. Keeping your head above your heart is the single most effective thing, because it directly reduces the pressure causing the pain.
• Take an anti-inflammatory such as ibuprofen if you can take it safely, rather than paracetamol alone — the problem is inflammation.
• Cold compress on the outside of the cheek, twenty minutes on and twenty off.
• Rinse with warm salt water.
• Avoid very hot, very cold and sugary things, and chew on the other side.

Two things to avoid: do not put an aspirin tablet against the gum — it burns the tissue and does nothing for the tooth — and do not apply heat to a swollen face, which encourages infection to spread.

When it is an emergency

Go straight to a dentist, or to a hospital if a dentist is not available, if you have facial swelling that is spreading, swelling near the eye or under the jaw, difficulty swallowing or breathing, fever with dental pain, or pain that no painkiller touches. Dental infections in the lower jaw in particular can spread into the floor of the mouth, and that is a medical emergency rather than a dental inconvenience.

Painkillers work by suppressing inflammation. The infection continues underneath regardless. A tooth that stops hurting after several days of severe pain has often not healed — the nerve has died, and the problem is now travelling into the bone.

Frequently asked questions

Why does my toothache stop and then come back worse?

Often because the nerve has died. The pain stops when the nerve tissue dies, then returns days or weeks later as infection spreads into the bone at the root tip. It is not a sign of recovery.

Which painkiller works best for toothache?

An anti-inflammatory such as ibuprofen generally outperforms paracetamol for dental pain, because the pain is driven by inflammation. Take it only if it is safe for you, and follow the packet dosage.

Can I wait until the pain settles before seeing a dentist?

Spontaneous night pain does not resolve on its own. It settles temporarily when the nerve dies, then returns as an abscess. The tooth is far easier and cheaper to save early.

Do you see emergency dental patients in Dehradun?

Yes. We keep time for genuine dental emergencies during consulting hours, Sunday to Friday. Call 92868 98353 and describe your symptoms — swelling and fever are prioritised.

Talk to a dentist in Dehradun