Dental clearance before bone-directed treatment

Bone-directed medicines such as zoledronic acid, other bisphosphonates and denosumab protect bones and, in some situations, lower the chance of breast cancer returning in bone. They carry a rare risk of osteonecrosis of the jaw, where an area of jaw bone loses its blood supply and fails to heal, usually after a tooth extraction or with a dental infection. A dental check before starting finds and treats problems while it is safest to do so, and makes it much less likely that invasive dental work will be needed during treatment. It is a simple step that greatly reduces an uncommon but troublesome complication.

What the dentist looks for

Tooth decay, gum disease, loose or broken teeth, infections, poorly fitting dentures that rub the gums, and teeth that may need extraction soon.

Why timing matters

Extractions and other invasive procedures are safest before bone-directed treatment begins, giving the jaw time to heal. Ideally this is done a few weeks before the first dose, when cancer treatment allows.

When treatment cannot wait

If bone medicines are urgently needed, for example with painful bone metastases, your team balances the timing of dental work with the need to start treatment.

Osteonecrosis of the jaw is uncommon, particularly at the doses used to protect bone in early breast cancer. For most women, the bone benefits of treatment clearly outweigh this small risk. A dental check makes the risk even lower.

It is not a reason to avoid treatment

Fear of jaw problems leads some people to decline bone medicines that could prevent fractures or lower recurrence. Discuss your concerns openly with your team.

Dental care continues during treatment

A single check is not the end. Regular dental visits and good home care throughout treatment keep the risk low.

Access to dentists can be difficult

In some areas, finding a dentist quickly can be hard. Ask your hospital whether it has a dental department or can recommend one.

What this page cannot tell you

It cannot assess your teeth or risk. Ask your dentist and oncologist to review your situation.

Dental problems can still arise during treatment. Many can be handled safely with a little planning.

Routine treatment is usually fine

Cleaning, fillings and most non-surgical work can generally go ahead as normal.

Extractions need planning

If a tooth must be removed, your dentist may try alternatives such as root canal treatment first. If extraction is unavoidable, your dental and oncology teams will plan it together, sometimes adjusting timing.

Implants and surgery

Dental implants and jaw surgery are usually avoided during treatment unless carefully discussed with your team.

A little planning helps fit the dental check into an already busy treatment schedule.

Ask for a letter

A short note from your oncologist explaining the planned bone medicine helps the dentist know what to look for and what to avoid.

Keep the dentist's report

Keep a copy of the dental clearance with your treatment papers, so any doctor or dentist can see it later.

Bring your blood counts

If you are on chemotherapy, dental treatment may need to be timed when your blood counts are safe, to lower infection and bleeding risk.