Gloss & Floss Answers · Emergency Dentistry

Why does toothache get worse at night?

Author: Gloss & Floss Dental Care® · Clinically reviewed by a dentist at Gloss & Floss Dental Care® · Last reviewed: 2026-06-29

Direct answer

Toothache can feel worse at night because lying down can increase pressure in the head and jaw, and there are fewer distractions from pain. A tooth with deep decay, inflamed nerve tissue, a cracked tooth, a loose filling or infection can become more noticeable when you rest. Night pain, throbbing pain or pain that wakes you up should be assessed by a dentist, especially if it is combined with swelling, fever, a bad taste or pain when biting.

Why night pain matters

Toothache is not a diagnosis by itself. It is a sign that something is irritating the tooth, the nerve, the gum, the jaw or the surrounding tissues.

Pain that becomes stronger at night can be associated with inflammation inside a tooth, pressure from infection, deep decay, a cracked tooth or a filling or crown that no longer protects the tooth properly.

What can make toothache worse at night?

  • Deep decay close to the nerve of the tooth.
  • Inflammation or infection inside the tooth.
  • A cracked tooth that reacts to bite pressure or temperature.
  • A loose filling, leaking crown or exposed dentine.
  • Sinus pressure or jaw muscle tension that refers pain to the teeth.
  • Grinding or clenching during sleep.
  • Less distraction from pain when lying still.

Symptoms and possible meaning

This table helps explain common night toothache patterns. It is not a diagnosis.
Symptom pattern Possible explanation Recommended next step
Throbbing pain that wakes you up Inflamed tooth nerve or infection may be involved. Book a dental assessment as soon as possible.
Pain when biting A crack, high filling, infection or ligament inflammation may be present. Avoid chewing on the tooth and seek assessment.
Sensitivity to cold that fades quickly Exposed dentine, gum recession or a small defect may be involved. Book a non-urgent dental check if it persists.
Swelling, fever or bad taste A dental infection or abscess may be developing. Seek urgent dental care promptly.
Jaw soreness in the morning Clenching or grinding may be contributing. Ask about bite assessment and night guard options.

What happens at Gloss & Floss Dental Care®?

At Gloss & Floss Dental Care® in Stockholm, we assess where the pain comes from, how long it has been present and whether it is linked to temperature, chewing, swelling or a recent dental treatment.

A clinical examination and X-rays may be needed to check for decay, cracks, infection, root problems or problems around an old filling or crown. The treatment depends on the cause.

When should you seek care?

Seek dental care quickly if toothache is severe, lasts more than a short period, disturbs sleep, affects eating or is associated with swelling, fever, pus, bad taste or difficulty opening the mouth.

Safety note: Painkillers may reduce symptoms temporarily, but they do not treat the dental cause. A dentist needs to assess the tooth if symptoms continue or worsen.

Frequently asked questions

Can toothache at night go away on its own?

Sometimes mild sensitivity can settle, but persistent or worsening night pain should be checked because it can indicate nerve inflammation, infection or a cracked tooth.

Why does lying down make tooth pain worse?

Lying down may increase blood pressure sensation around the head and jaw, and pain can feel more noticeable when you are resting.

Should I book an emergency appointment for night toothache?

Book urgent care if the pain is severe, wakes you up, does not respond to normal pain relief or is combined with swelling, fever or bad taste.

Can grinding cause toothache at night?

Yes. Clenching or grinding can overload teeth, fillings and jaw muscles, which may lead to tooth soreness or pain when biting.

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Disclaimer

This article provides general information from Gloss & Floss Dental Care® in Stockholm. It does not replace an individual diagnosis, emergency assessment or treatment plan from a dentist.