Can I have implants after chemotherapy or radiotherapy?

Chemotherapy is a treatment that spreads through the blood to the whole body; while it targets rapidly dividing cells, it also affects the bone marrow. Radiotherapy works the opposite way: it only affects the area the radiation is aimed at. Radiotherapy given for head and neck cancer concerns the jaw directly, while radiotherapy given to the chest or abdomen has almost nothing to do with the implant decision. That is why the first thing we ask is not 'have you had cancer treatment' but 'which treatment did you have, where, and when'.

During chemotherapy, the white cell and platelet counts your bone marrow produces fall temporarily. Because the body's ability to fight infection and to clot blood is reduced during this time, elective surgery is postponed. If a procedure such as an extraction or an implant is not urgent, it waits until your blood counts recover. Recovery is a process your oncology team monitors; it is not a threshold your dentist can judge alone.

Radiotherapy works differently. Radiation given to the head and neck permanently affects the blood vessels and bone cells in the jaw. This effect continues after treatment ends: even years after radiotherapy, surgery in the same area can still cause problems. Unlike chemotherapy, there is no 'recovery' to wait for here; the change is permanent.

The most serious consequence of this permanent change is osteoradionecrosis: bone in the irradiated area loses its ability to heal, and exposed bone fails to close over. A tooth extraction is known as one of the most common triggers, because the already weakened blood supply cannot keep up with the trauma done to the bone. That is why, in patients due to have head and neck radiotherapy, existing dental problems are dealt with before treatment starts wherever possible.

The risk is not the same for every radiotherapy patient. Two things decide it: the total dose reaching the jaw, and whether the radiation field covers the area where implants would go. A patient who received a low dose, or whose radiation field left the jaw out, is not assessed in the same category as one who received a high dose to the jaw. This information sits in the radiation oncology report and is central to the implant decision.

Some medicines used in cancer treatment are a separate matter. High-dose bisphosphonates given for bone metastases or certain blood cancers, and some anti-angiogenic medicines, carry a risk of medication-related osteonecrosis of the jaw. These come from the same family of medicines used for osteoporosis, but at much higher doses, and the risk changes accordingly. We have a separate page for patients taking osteoporosis medication; it is important not to confuse the two situations.

None of this means the door is closed. Implants can be discussed for a patient whose chemotherapy is finished and whose blood counts have recovered, or for one who has had low-dose radiotherapy that left the jaw out of the field. The decision is not made from a single rule; it rests on your oncology report and the examination together. For some patients, implants are not right just now; in that case we talk through alternative solutions and timing together.

The breakdown below is a general framework. The final decision is made once your oncology report, your radiotherapy field details and the examination have all been reviewed together.

For a patient with a cancer treatment history, the plan is built as an extra layer on top of the standard implant assessment.

1. 1

   Bring your oncology report

   Your discharge summary, treatment dates, the medicines used and, if you had one, your radiation oncology report. A safe assessment cannot be made without these documents.

2. 2

   If you had radiotherapy, clarify the radiation field

   Which area was irradiated, and at what dose, is written in the radiation oncology report. If you do not have it, you can request it from the centre that gave the treatment; this information sits at the centre of the decision.

3. 3

   Your blood counts are assessed with the oncology team

   If you have a chemotherapy history, the safe level for your white cell and platelet counts is not set by a single universal threshold; it is decided together with the oncology team who know your treatment protocol.

4. 4

   The jawbone is imaged with a CBCT scan

   The current condition of the bone in the irradiated area is assessed with a 3D image. This is the most concrete evidence the decision rests on.

5. 5

   A written opinion is obtained from the oncology team

   The timing of surgery, antibiotic cover if needed, and any extra risks are clarified together with the oncology team's opinion.

6. 6

   If it is found suitable, a plan follows; if not, an alternative is set up

   If the assessment finds a suitable time for implants, the plan is built around it. If it does not, we say so plainly and talk through alternative solutions.

The following are routes that come up for patients with a cancer treatment history. Which one is right is decided by your oncology history and the current condition of your mouth together.

The following are conditions seen more often in patients with a radiotherapy or chemotherapy history, and worth knowing about in advance.

For a patient with a cancer treatment history, healing is monitored more often and more closely.

1. The first few days

   Swelling and tenderness are no different from the usual course, but during this time the wound area and your general condition are checked more often than usual.

2. The first week

   Close monitoring for signs of infection or bleeding continues. Anything outside what is expected should be reported early.

3. The first few months

   Check-ups are scheduled more often than for a patient with no cancer history. The condition of the tissue in the radiation field is reassessed at every check-up.

4. The long term

   Because the effect of radiotherapy is permanent, the area around an implant in the radiation field is monitored regularly for years. The risk of osteoradionecrosis does not fall over time, so follow-up needs to be ongoing.

A cancer treatment history does not change the price directly; what it affects is the extra assessment and how closely you are followed up. Here are the items:

The extra assessment process with oncology

Obtaining a written opinion and, if needed, requesting extra tests is a step that cannot be skipped for this group, and it is part of the process.

The scope of imaging

The condition of the irradiated area is assessed in detail with a CBCT scan; this can be more extensive than a standard implant assessment.

Whether an additional procedure is needed

If a plan that avoids grafting is possible, it shortens both the cost and the healing time; if a graft is needed, it is added as a separate item.

How often you are followed up

Check-ups are scheduled more often for this group; this increases the long-term care item but directly protects the safety of the implant.