Why Out-of-Hours Dental Services Are Vital for Londoners

Dental problems have an unhelpful habit of declaring themselves in the evening. Partly this is chance, and partly it is physiology — lying down raises pressure within an inflamed tooth, and the distractions that kept the pain at the edge of attention during the day are gone.

The result is a large number of people making a decision late at night with poor information. This article is about making that decision well: what genuinely needs attention now, what needs attention tomorrow, and what an out-of-hours appointment can realistically achieve.

Almost everything falls into one of three groups, and separating them is the whole task.

Immediate — hospital, not a dental practice. Facial swelling that is spreading, particularly towards the eye or down into the neck. Any difficulty swallowing, breathing or opening the mouth. Swelling with fever and feeling generally unwell. Uncontrolled bleeding. Trauma involving possible facial fracture, or loss of consciousness.

These are situations where infection or injury has moved beyond the tooth. Spreading dental infection in the floor of the mouth or neck is a recognised medical emergency, and the appropriate destination is an emergency department rather than a dental surgery.

Urgent — same day or next day. Severe pain not controlled by over-the-counter analgesia. A localised swelling on the gum. A tooth knocked out or displaced by injury. A fractured tooth with the nerve exposed. Bleeding after an extraction that has not stopped with pressure. A loose or lost crown on a front tooth where the exposed tooth is sharp or painful.

Can wait for a routine appointment. A lost filling that is not painful. A chipped tooth with no sharp edge and no sensitivity. Mild intermittent sensitivity. A crown that has come off cleanly and is not causing pain — keep it and bring it. A broken denture, uncomfortable though it is.

Our article on what constitutes a true dental emergency versus urgent care sets out the distinctions in more detail.

Among all dental problems, a knocked-out permanent tooth is the one where the clock matters most.

The cells on the root surface begin to die within minutes of the tooth drying out, and the chance of successful reimplantation falls sharply over the first hour.

What to do: pick the tooth up by the crown, never the root. If it is dirty, rinse briefly in milk or saline — not tap water, and do not scrub it. If you can, place it straight back into the socket and bite gently on a clean cloth to hold it. If you cannot, store it in milk, or in saliva by holding it inside the cheek if the person is old enough not to swallow it. Then get to a dentist immediately.

Do not let it dry out. A tooth transported dry in a tissue has a considerably worse outlook than one transported in milk. Baby teeth are not reimplanted, so this applies to adult teeth.

This is worth being clear about, because expectations frequently do not match what an out-of-hours visit involves.

The aim of urgent dental care is to relieve pain and to control infection. It is not usually to complete definitive treatment.

For an infected pulp, that typically means opening the tooth and removing the inflamed tissue from the pulp chamber, which relieves the pressure and usually the pain, with the root canal treatment completed later. For a dental abscess, it may mean draining it. For a fractured tooth, it may mean smoothing a sharp edge or placing a temporary dressing over exposed dentine. For a lost crown, it may mean recementing it temporarily.

Antibiotics are not a treatment for toothache. Pain from an inflamed pulp does not respond to them, because the problem is pressure within an enclosed space rather than spreading infection. Antibiotics have a role where infection has spread into the surrounding tissue, and they are prescribed alongside dealing with the cause rather than instead of it. Our article on when to call an emergency dentist for severe toothache covers the reasoning, and our article on whether root canal treatment is painful addresses the common apprehension.

• Spreading facial swelling, difficulty swallowing or breathing require a hospital, not a dental practice.

• A knocked-out adult tooth is the one situation where minutes matter — keep it moist.

• Urgent appointments relieve pain and control infection; definitive treatment usually follows.

• Antibiotics do not treat toothache from an inflamed pulp.

• Most out-of-hours calls could have been avoided by acting on an earlier warning sign.

Where the problem is urgent but not immediate, several things help.

Over-the-counter analgesia taken at the correct dose and at regular intervals is more effective than taking it only when the pain becomes severe. Ibuprofen is often particularly useful for dental pain because the mechanism is inflammatory, and it can be combined with paracetamol where there is no reason not to take either. Check the packaging and any advice you have been given about your own health and medicines.

Do not place aspirin against the gum. It is an acid and it burns the tissue, adding a chemical ulcer to the original problem.

Sleeping propped up with extra pillows reduces the pressure within an inflamed tooth and often makes a substantial difference to night pain. Cold on the outside of the face can help with swelling; heat generally should not be applied where infection is suspected.

Avoid very hot, very cold and very sweet items, all of which provoke an inflamed pulp. Keep the area clean, gently — a warm salt water rinse is soothing for gum problems.

And never use household adhesive to reattach a crown or a piece of tooth. It is toxic, it is impossible to remove without damaging the tooth, and it frequently turns a straightforward recementation into a more complicated repair. Our article on why superglue should never be used on a crown explains why.

Several things about the city shape how out-of-hours dental care is used.

A large proportion of the population is not registered with a dental practice, either because of NHS access difficulties or because of how frequently people move. That means the first point of contact when something goes wrong is often a stranger rather than someone who holds your records.

Working patterns push routine care down the list. People who commute, work late or travel frequently defer check-ups, and the problems that would have been caught early are instead caught when they become painful.

And the practical reality is that a dental problem at midnight in a large city is a logistical question as much as a clinical one. NHS 111 provides triage and can direct you to an urgent dental service. Many private practices reserve daily slots for urgent problems, and some offer out-of-hours arrangements. Knowing in advance what your own practice offers is worth five minutes of your time when nothing is wrong.

It is worth saying plainly: most urgent dental appointments follow a warning that was noticed and set aside.

A tooth that had been sensitive for weeks. A filling that had felt rough since it chipped. A gum that bled at one spot every time it was cleaned. A crown that had felt slightly loose for a month. These are the histories behind a large share of midnight calls.

The economics are stark too. Treating a small cavity is a short appointment. Treating the same tooth once the nerve is involved is root canal treatment and a crown, often at urgent-appointment rates. Our article on the cost comparison between regular hygiene visits and emergency care makes the comparison, and our article on preventing root canal treatment through regular hygiene covers the preventive side.

None of which helps at 11pm. But it is the reason the most useful thing to do after an urgent appointment is to book the follow-up before leaving.

If you have an urgent dental problem, contact us through our contact page. If there is spreading facial swelling or any difficulty swallowing or breathing, go to an emergency department rather than waiting.

You can read more on our emergency dentist page, our dental check-up page, our root canal page and our dental hygiene page.

This article is for general information only and does not constitute dental or medical advice. It cannot be used to assess the severity of your own situation. If you have facial swelling, difficulty swallowing or breathing, fever, or uncontrolled bleeding, seek immediate medical attention.

Next review due: 30 July 2027