Bleeding after a tooth extraction: what's normal, and what to do at home

Some bleeding after a tooth extraction (Zahnentfernung) is normal and expected — a small amount of blood mixes with a large amount of saliva and looks far more dramatic than it is. In the great majority of cases it stops with twenty to thirty minutes of firm, uninterrupted pressure on a rolled gauze pad. What is not normal is bright red blood that fills your mouth repeatedly, or oozing that is still going strong the next morning. The single most common reason bleeding restarts is that the patient kept checking, rinsing or spitting, and pulled the forming clot away. If you take blood-thinning medication, tell us before the appointment — but never stop it yourself.

It is half past nine in the evening. The practice closed hours ago. You took the gauze out after dinner, everything seemed fine, and now there is a metallic taste and an alarming amount of blood every time you swallow. You are trying to work out whether this is an emergency.

Almost always, it is not. But you do need to do the right thing in the next half hour, and the right thing is unintuitive: less looking, more pressure.

One millilitre of blood turns a mouthful of saliva convincingly red. That is why people misjudge this so often, and why a clear test helps.

The spit test. Spitting is exactly what you should not do — but if you have already done it, look at what came out. Blood-tinged saliva is oozing. A clot the size of a grape followed by fresh red flow means the clot has just been dislodged.

This is the procedure that resolves the overwhelming majority of post-extraction bleeding at home. Follow it exactly; the details are what make it work.

1. Sit up. Upright in a chair, head above heart. Do not lie down and do not bend over — both raise the pressure in the vessels of your head. 2. Clear the mouth once, gently. One careful wipe of loose blood from the lips with a clean cloth. Do not rinse. Do not swill water. Do not poke at the socket with your tongue or a finger. 3. Roll a gauze pad tightly into a firm cylinder roughly the size of the gap. A loose flat square lying on the gum does nothing; the pressure has to reach the socket. A clean cotton handkerchief works if you have run out of gauze. 4. Place it directly over the socket and bite down hard and steadily. If the tooth was at the very back and you cannot get purchase, hold the pad in place with your thumb instead. 5. Twenty to thirty minutes, without looking. This is the part everybody gets wrong. Checking at minute four tears the young clot away and restarts the clock. Set a timer and watch something. 6. Remove the pad slowly, in the direction of the tooth, not straight down. If it has stuck slightly, moisten it first. 7. If it is still bleeding, repeat once with a fresh pad. If a second full attempt fails, ring us rather than try a third.

The black tea trick. A used, cooled black tea bag, squeezed out and bitten on in place of gauze, works well: black tea contains tannins, which help blood vessels contract and support clotting. Green and herbal teas do not. This is a genuine home measure, not folklore — but it replaces the gauze, not the twenty minutes of pressure.

Cold from the outside. An ice pack against the cheek, twenty minutes on and twenty off, helps the small vessels narrow. Never put ice directly inside the mouth against the socket.

People frequently tell us the bleeding stopped in the practice and returned hours later at home. There is nothing mysterious about it. Four things usually coincide:

The anaesthetic wears off. The local anaesthetic (Betäubung) generally contains a vasoconstrictor, which narrows blood vessels and keeps the field dry during the procedure. As it fades after a few hours, the vessels open again.

You became active. The walk from the tram, the stairs, unloading the dishwasher — all of it raises blood pressure just enough.

You had something hot. Soup, tea, a hot shower. Heat dilates blood vessels; everything on the first day should be cool or lukewarm.

You lay down. Sleeping flat increases blood flow to the head, which is why an extra pillow on the first night genuinely reduces overnight oozing.

Add a small ooze pooling overnight and looking catastrophic on the pillow, and you have the classic panicked message we receive at seven o’clock.

Each of these has a reason attached — the reasons are what make the rules stick.

• No rinsing or spitting. Both create negative pressure and mechanical drag on the clot. If your mouth feels unpleasant, let lukewarm water sit for a moment and tip it out over the sink.
• No straws. Sucking is the most efficient way ever devised to remove a blood clot from a socket.
• No smoking or vaping. Suction plus heat plus chemistry. Smoking in the first days is also the clearest known risk factor for a dry socket.
• No alcohol. It thins the blood and dilates vessels.
• No aspirin for pain. Acetylsalicylic acid inhibits platelet function and will make oozing worse. Ibuprofen or paracetamol are the usual choices — stick to the dose on the packet or the one we gave you.
• No hard exercise, sauna, hot bath or long-haul flight on day one.
• No hot food. Cool and soft, on the other side of the mouth.
• Do not sleep on the operated side if you can help it.

This is where an extraction genuinely changes shape, and where English-speaking patients most often get caught out — because the medication has a different name here.

Tell us what you take at the planning appointment, not on the day. The names you may know translate as follows: acetylsalicylic acid (ASS, marketed as Aspirin), clopidogrel, phenprocoumon (Marcumar or Falithrom — the German equivalent of warfarin), and the newer direct oral anticoagulants such as rivaroxaban, apixaban, edoxaban and dabigatran. Bring the packet or a photo of it if you are unsure. Also mention supplements: fish oil, high-dose vitamin E and ginkgo all have a mild effect.

Do not stop anything on your own. This matters more than the bleeding does. People take these drugs because a clot elsewhere in the body would be far more dangerous than a bleed in the mouth, and stopping abruptly before dental surgery has caused serious harm. German and international guidance has moved firmly towards keeping patients on their anticoagulation for routine extractions and controlling the bleeding locally instead. Any change is a decision for the doctor who prescribed it, communicated to us in writing.

What we do differently. With an anticoagulated patient we plan a morning appointment early in the week, work as atraumatically as possible, place a resorbable haemostatic dressing in the socket, suture it closed, and keep you in the practice long enough to confirm the bleeding has settled. For phenprocoumon we may ask for a current INR value. You go home with more gauze than usual and a clear instruction about when to ring.

If you have a bleeding disorder — haemophilia, von Willebrand disease, low platelets or liver disease — say so early. The plan changes, and sometimes the right place for the extraction is a hospital clinic rather than a practice. That is not a brush-off; it is the right level of care.

Out of hours. We are open Monday to Friday 07:30 to 19:30 and Saturday 08:00 to 18:00, which covers much of the critical first 48 hours. At night, on Sundays and on public holidays, Wuppertal is served by the dental out-of-hours service (zahnärztlicher Notdienst) — the right address for a bleed that will not settle. If in doubt at three in the morning: pressure first, then ring.

Two small pieces of preparation remove most of the anxiety.

Before the appointment, ask for extra gauze to take home, save the practice number in your phone under a name you will find in a panic, and if you live alone, tell one person you are having a tooth out today. Not because something is likely to go wrong, but because the reassurance costs nothing.

For the phone call itself, four German sentences help even if the rest happens in English: Ich hatte heute eine Zahnentfernung (I had a tooth extraction today). Es blutet stark (it is bleeding heavily). Ich nehme Blutverdünner (I take blood thinners). Ich brauche einen Notfalltermin (I need an emergency appointment). Say those, and any German practice will understand the situation.

We treat patients in English as a matter of routine — it is one of our working languages alongside German, Russian, Turkish, Ukrainian, Arabic, Kurdish and French — and for many expats in Düsseldorf, Cologne or Bonn, the twenty to thirty minutes to reach a practice where aftercare happens in their own language is time well spent: English-Speaking Dentist in NRW.