I take blood thinners: can I have implants?

People call them all 'blood thinners', but there are two separate groups of medicines. Aspirin and clopidogrel are antiplatelets: they make it harder for the platelets in your blood to stick together and form a plug. Warfarin and the newer medicines are anticoagulants: they block specific links in the chain of proteins that drives clotting. Both prolong bleeding, but the way they are monitored and the preparation needed before surgery are completely different. That is why the first thing we ask is not 'do you take a blood thinner?' but what it says on the box.

These medicines do not start bleeding; they prolong it. The difference matters. There is always some bleeding in implant surgery; in a patient taking these medicines, the same bleeding lasts longer and the clot takes longer to form. The measures we have against this are at the surgical site itself: stitches, direct pressure, materials placed in the area to stop bleeding, and keeping the procedure to a small area. Bleeding inside the mouth is bleeding that can be reached and seen. We do not expect bleeding that cannot be stopped in a place where pressure can be applied.

The real risk is stopping the medicine. These medicines are not prescribed on a whim; behind them there is a stent, a prosthetic heart valve, a heart rhythm disorder or a previous clot. The price of stopping the medicine for a few days can be a clot in a blood vessel, a heart attack or a stroke. Bleeding in the mouth can be managed; a clot in the brain cannot. This is exactly why current dental guidelines come down on the side of not stopping antiplatelets and anticoagulants. A small convenience for the tooth should not turn into a heavy price for the heart.

If you take warfarin, the INR comes into play. The INR is a ratio that shows how quickly your blood clots. In someone who is not taking the medicine, it is around 1; on warfarin, a target range usually between 2 and 3 is maintained, and for people with a prosthetic heart valve this range is higher. The limit that guidelines set for dental surgery is below 4: if your value is below this limit, the procedure is carried out without stopping warfarin. The value must have been measured close to the date of the procedure; warfarin is an unpredictable medicine that is affected by diet and other medicines, and a test from three months ago tells us nothing about today. Ideally, the value is measured within the 24 hours before the procedure, and no more than 72 hours beforehand.

The newer anticoagulants (apixaban, rivaroxaban, dabigatran, edoxaban) work differently. They do not need INR monitoring or regular blood tests; their effect starts with the dose taken and wears off during the day. What matters here is not a measurement but timing: the time of the surgery and the time of that day's dose are set in relation to each other, and in some patients the morning dose is delayed or skipped. We do not make this adjustment on our own. The doctor who prescribed the medicine tells us whether the dose should be changed, and we arrange the appointment accordingly.

Not every patient who says 'I take heart medication' is taking a blood thinner. Most blood pressure medicines, beta blockers, ACE inhibitors and cholesterol medicines do not prolong bleeding. They do not need to be stopped, and you should not stop them. With calcium channel blockers, there is another detail: medicines such as amlodipine and nifedipine cause the gums to overgrow in some patients, which makes cleaning harder and affects the plan. Your blood pressure itself is a separate matter; high blood pressure increases bleeding during the procedure, so for a patient whose blood pressure is not under control, we postpone the appointment and get that sorted first.

The protocol we use makes this situation easier. A strategic implant locks mechanically into the hard outer layer of the jaw, the cortical bone; unlike a conventional implant, it does not look for volume in the soft, spongy bone inside. That is why bone grafts and sinus floor elevation do not come into it. For a patient taking a blood thinner, this means something concrete: no second surgical site is opened, you do not come back months later for a second session involving bleeding, and the work is finished in three clinical days. You do not leave the clinic without teeth.

The two lists below become clear once your medication list and CBCT scan have been seen. Seeing yourself in the list on the right does not mean 'no'; for most items, what it means is that the order changes.

The point of this sequence is to leave no surprises for the day of surgery. At the end, you have in writing which medicines will be changed, which will be left alone and what time your appointment is.

1. 1

   Send us your medication list

   We ask for the name and dose of every medicine you take; a photo of the prescription or the boxes is the most practical way. Include herbal supplements, fish oil and weight-loss products too. Leaving anything off this list only harms you.

2. 2

   Send us your X-ray or scan

   If you have a panoramic X-ray or CBCT scan, send it through the form. The images are read by the dentist who will carry out the treatment; the first reply is written by the dentist, not an assistant. You do not need to come in; we get back to you within one working day.

3. 3

   We write to the doctor who prescribed the medicine

   We tell your cardiologist, or the doctor who monitors you, in writing what the planned surgery involves, and ask whether the medicine should be changed. We get the answer in writing. Stay away from any clinic that skips this step.

4. 4

   Blood tests close to the procedure

   If you take warfarin, we have your INR measured within the 24 hours before the procedure, and no more than 72 hours beforehand. With the newer anticoagulants we do not ask for an INR; instead, we ask about the time of your last dose and your kidney function results.

5. 5

   You receive the plan in writing

   How many implants, in which jaw and with what bridgework; which medicine you take at what time on the day of surgery; and the time of the appointment are all set out in the same document. Your painkiller is written into this plan as well.

6. 6

   Three clinical days

   The surgery and the fitting of the final fixed teeth are spread over three clinical days. We book your appointments early in the day, so that any bleeding runs its course during the day, where we can keep an eye on it. At the end of the three clinical days you leave with your fixed teeth.

There is more than one way to manage bleeding, and not all of them apply to every mouth. Your medication list, your heart condition and your CBCT scan together determine which one suits you.

We are not writing this to frighten you, but so that you can ask the right questions, whichever clinic you go to.

The sequence below was written for patients taking blood thinners. The only difference from a patient who does not take them is that the first day needs a little more care.

1. Three clinical days

   The surgery and the fitting of the final fixed teeth are spread over these days. You will not feel pain. At the end of each day your bleeding is checked, and we do not send you away until everything is as it should be.

2. The first 24 hours

   Steady pressure on a gauze pad is the most effective method; do not chew on the gauze, and do not keep changing it to check. Do not spit, do not use a straw, do not have hot drinks, and do not touch a cigarette at all that day. You continue your medicine exactly as we have set out in the plan.

3. The first week

   The oozing stops, and the bruising fades, changing colour as it goes. We ask you to eat soft foods, brush the area gently and apply something cold to the swelling. If you have stitches, they are removed during this period.

4. Check-ups and the long term

   We give you the check-up schedule and the care instructions for the bridgework in writing. Cleaning between the teeth, regular professional cleaning and a yearly scan are part of the plan. If there is any change to your heart medication, let us know as well.

We do not give figures on this page, because an accurate figure can only be given once your CBCT scan and medication list have been seen. Taking a blood thinner is not in itself an item that changes the total; the following, however, determine it directly:

Number of implants and which jaw

Whether it is one jaw or both, how many implants are planned and which areas they will be placed in directly determine the total.

Preparing the mouth

If teeth need extracting, gum inflammation needs treating or roots need removing, these are added to the plan and affect the timeline too.

Additional tests and correspondence

The blood tests requested because of your heart condition and the correspondence with the doctor who monitors you are part of the preparation. We do not cut this step short.

Bridgework

The material of the fixed teeth and the laboratory work directly affect the total. We tell you the brand of the material we use in writing from the start.