The short answer
If you are scheduled for heart valve surgery — and often for bypass surgery or a catheter-based valve procedure — the clinic will ask for a dental certificate confirming that your mouth has been examined and any source of infection dealt with. In German this is a Fokussuche (focus search), and the paperwork a Sanierungsbescheinigung. The purpose is to reduce the chance that bacteria from a chronically infected tooth settle on a new prosthetic valve. The reasoning is sound and the practice is standard across German cardiac centres, but the evidence that it changes outcomes is weaker than the confidence with which the form is handed to you. The goal is a sensible middle course: remove what is clearly infected, early enough to heal, without turning a heart operation into a dental marathon.
Why the cardiac clinic wants a dentist's signature
A new heart valve is a prosthetic surface. Bacteria arriving in the bloodstream have somewhere to attach that a natural, healthy valve does not offer, and infective endocarditis on a fresh prosthesis is one of the complications cardiac surgeons work hardest to avoid — treating it means weeks of intravenous antibiotics and sometimes a second operation.
Bacteria from the mouth are one recognised source. A chronic abscess at a root tip, a broken-down root left in the jaw, or advanced gum disease with deep pockets each represent a bacterial reservoir in contact with the bloodstream. The logic of the focus search is to close those reservoirs before the prosthesis goes in, not afterwards.
The same reasoning is applied, with varying strictness, before catheter-based valve implantation, before a pacemaker or defibrillator, and sometimes before bypass surgery. Protocols differ between hospitals, so the form you are given may not match a colleague’s.
clear foci of infection before an artificial valvea guideline recommendationtiming about 2–4 weeks beforehand
mortalityprosthetic valve endocarditiswound infectionlength of hospital stay
A sensible precaution — not a proven lifesaver
What the focus search actually involves
It is not an ordinary check-up, and it is worth knowing what to expect so you can allow the right amount of time.
A full examination. Every tooth is assessed for decay, cracks, failed fillings and tenderness. Old root-treated teeth get particular attention, because they are the most common site of a silent chronic infection.
Gum measurements. Pocket depths are probed around each tooth and recorded. Deep pockets that bleed are the largest bacterial surface most people have.
X-rays. A panoramic X-ray (Orthopantomogramm, OPG) is the usual starting point, showing all the roots and the bone level in one image. Where something stays unclear — a root tip that may or may not be infected, a lesion overlapping the sinus — a 3D X-ray (DVT) settles it. In our practice a DVT costs 178 €. It is not always needed, and we say when it is not.
A written report. The clinic wants a statement, dated and signed, describing what was found and what was done. We write it in the form the cardiac centre expects, and supply an English copy for your own records. Where the picture is borderline, examination under a microscope settles it — cracks and leaking root fillings invisible to the naked eye become obvious, and the whole exercise is about not missing a quiet infection.
What usually has to go, what can wait, and what is not urgent
The most common fear is that dental clearance means losing several teeth at short notice. Usually it does not. A reasonable assessment sorts findings into three groups.
Heart surgery is not the moment for elective dentistry, and a practice that responds to a cardiac referral with a long treatment plan for prosthetic work is answering a question nobody asked.
The honest part: how strong is the evidence?
This is where patient information usually goes quiet, and it should not.
The reasonable conclusion — the one most German cardiac centres and dental societies converge on — is to treat what is clearly infected, with as much lead time as the surgical date allows, and not to extend the work beyond what the infection question requires. What we should not do is pretend the certificate itself is proven to save lives. It is a precaution built on sound reasoning, applied because the downside of ignoring an abscess next to a new valve is severe.
Timing: the squeeze that causes most of the stress
Ideally, extraction sockets have some weeks to heal before major surgery and gum treatment has time to take effect. Reality frequently gives you ten days between the cardiology appointment and the operating list.
Three things help.
Start the day you receive the referral — not at pre-admission. The dental part is the one piece of the process you can begin immediately, and saying your surgical date at the first phone call changes how the appointment is scheduled. Early morning slots from 07:30 exist partly so that time-critical treatment does not queue behind routine care.
Accept staged treatment. Extract what must come out, stabilise the rest, finish properly after your recovery. A certificate does not require a perfect mouth; it requires no active source of infection.
Let us talk to the clinic. Where healing time and the operating date genuinely conflict, the decision belongs to your cardiac surgeon — the urgency of the heart operation almost always outranks dental preferences. We supply the findings; they weigh them.
Blood thinners, and the one thing never to do
Most people heading for cardiac surgery take some form of blood-thinning or antiplatelet medication, so extractions and gum treatment need planning: which drug, whether a laboratory value is needed beforehand, and what local measures control the bleeding.
Never stop or reduce a blood thinner on your own before a dental appointment. Not the day before, not “just this once”. Stopping these medicines carries its own risk, and the decision belongs exclusively to the doctor who prescribed them. Most dental procedures can be carried out with no change to the medication at all. Tell us what you take, bring your medication plan (Medikationsplan), and let us coordinate with your prescriber: Blood thinners and dental treatment: what you should know (EN).
If you have just moved to Germany
Two things catch people out. The paperwork is its own process: German clinics work with written certificates, and a verbal “my dentist says it’s fine” will not be accepted. And nobody coordinates for you — the patient is expected to carry information between specialists, so bring your letters in both directions, the referral to us and our certificate back to the clinic.
If you are managing this in a second language while also absorbing a diagnosis, ask for the whole pathway to be explained once in English rather than piecing it together from forms: English-Speaking Dentist in NRW.
What is normal after treatment — and when to call
Contact your cardiac team as well if you develop fever, chills or unexplained exhaustion in the weeks after dental treatment, particularly once a prosthetic valve is in place. Ask for it to be investigated rather than assumed to be a virus, and do not start a leftover antibiotic before blood samples are taken.
You can decline any treatment, but many cardiac centres will not schedule elective valve surgery without the certificate, so refusing usually means delay rather than avoidance. If your mouth is genuinely healthy, the appointment is short and the certificate is issued the same day.
The examination and any necessary treatment of infection are handled in the normal way by your fund. Where a private service such as a 3D X-ray is involved, we tell you the cost in advance and in writing — with us the DVT is 178 €. What we cannot do is promise what your particular fund reimburses for every item; that depends on the finding and the plan submitted.
Yes. Even at short notice, identifying an acute abscess changes management, and your cardiac team would much rather know about it before the operation than discover the consequences afterwards. Call us, say the date, and we will fit you in.
That is exactly the risk of an over-cautious approach, which is why the assessment should be tooth by tooth rather than a blanket clearance. A tooth that is restorable and not infected does not need to come out because of a heart operation. If we recommend an extraction, we explain the specific finding behind it.
Many centres apply a similar focus search, usually with a lower threshold for what counts as sufficient. Follow the instruction from the centre performing your procedure — their protocol governs.
Dental clearance before heart surgery is a reasonable precaution with a solid mechanism behind it and softer outcome evidence than most people assume. Treat it as targeted infection control, not a licence for wholesale dentistry: infected teeth treated or removed, gums brought under control, everything cosmetic postponed. Start the moment you get the referral, be explicit about your surgical date, and never adjust your blood thinners yourself. Where dentistry stops, your cardiac surgeon decides — including whether the operation waits for the mouth, or the mouth waits for the operation.
Zahnarztpraxis Tsypin · Wuppertal. This article was medically reviewed and is provided for information; it does not replace an examination. Updated August 2026.
