Dental treatment and minor procedures during chemotherapy

It cannot tell you whether a particular procedure is safe for you on a particular day. That depends on your blood counts, medicines and health.

It also cannot replace clearance from your oncologist. Always check with them before booking any procedure during treatment.

Routine cleaning and check-ups

Gentle check-ups and simple cleaning are often possible during chemotherapy when counts have recovered. Deep scaling below the gums carries more risk of bleeding and bacteria entering the blood, so your dentist and oncologist may prefer to delay it or plan it carefully. Tell the dental team you are having chemotherapy at every visit.

Tooth extractions

Extractions carry the highest risk among common dental procedures because they leave an open wound. If a tooth is likely to cause trouble, it is best removed before chemotherapy begins, allowing time to heal. During treatment, extractions are usually timed for when counts have recovered and sometimes done with antibiotic cover.

Emergencies cannot always wait

A dental abscess can be more dangerous than the procedure to treat it. If you have facial swelling, severe pain or fever, contact both your oncologist and dentist the same day. The teams may give antibiotics, adjust chemotherapy timing or arrange treatment in hospital. Do not simply take painkillers and wait.

The jaw bone problem

Medicines such as zoledronic acid and denosumab, used for cancer in the bones, can rarely cause an area of jaw bone to lose its blood supply after tooth extraction. A dental check before starting these medicines lowers this risk. Never stop them yourself; your oncologist and dentist will plan together.

Mouth care during chemotherapy

Chemotherapy can cause a sore mouth and make gums more likely to bleed or become infected. Brush gently with a soft brush, use the mouthwash your team recommends, and avoid alcohol-based mouthwashes. Keeping the mouth clean reduces the chance of needing urgent dental treatment during your course.

Dentures and braces

Loose dentures can rub and create sores that may become infected. Keep dentures clean, remove them at night, and ask your dentist to adjust them if they cause soreness. Orthodontic work in children or young adults is usually paused during intensive treatment and discussed with the cancer team.

Minor skin procedures

Removing a mole, draining a boil or treating an ingrown toenail also creates a wound. The same principles apply: check counts first, plan for when they have recovered, keep the wound clean, and report redness, heat or discharge promptly. Tell the doctor doing the procedure that you are on chemotherapy.

Eye, ear and endoscopy procedures

Other planned procedures, such as cataract surgery or an endoscopy, should also be discussed with your oncologist. Some can safely wait until chemotherapy finishes. Others may be needed sooner. The team will look at your counts, bleeding risk and the urgency of the procedure before agreeing a plan.

Blood thinners and bleeding

If you take a blood thinner, the risk of bleeding after a procedure is higher, especially when platelets are low. Your doctors will decide whether any change is needed around the procedure. Never stop or change a blood thinner yourself, as this can be dangerous in its own way.

Local anaesthetic

Standard local anaesthetic injections used by dentists are generally safe during chemotherapy. Tell the dentist about all your medicines, including anti-sickness tablets and steroids. If you have a heart condition or feel faint easily, let them know so they can take extra care during the procedure.

Children having chemotherapy

Children are especially prone to mouth sores and infection during treatment. Paediatric cancer teams usually arrange a dental review early and coordinate any treatment closely. Parents should check with the team before any dental visit, even for something that seems simple, such as a loose baby tooth.

After chemotherapy ends

Blood counts usually recover in the weeks after the last session, and routine dental care can resume once your team confirms this. Some people have a dry mouth or more tooth decay after treatment, so regular dental check-ups remain important. Keep your treatment summary to share with your dentist.

What to do next

Have a dental check before chemotherapy if you can, tell every dentist about your treatment, ask your oncologist for the safest window in your cycle, get a recent blood test before any procedure, and report fever or swelling the same day.