{"id":31077,"date":"2026-06-24T15:00:12","date_gmt":"2026-06-24T13:00:12","guid":{"rendered":"https:\/\/www.gloss-floss.se\/?page_id=31077"},"modified":"2026-06-24T15:00:14","modified_gmt":"2026-06-24T13:00:14","slug":"what-should-i-know-about-dental-care-before-cancer-treatment","status":"publish","type":"page","link":"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/what-should-i-know-about-dental-care-before-cancer-treatment\/","title":{"rendered":"What should I know about dental care before cancer treatment?"},"content":{"rendered":"\n
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Gloss & Floss Answers \u00b7 Oral Health Through Life<\/p>\n\n

What should I know about dental care before cancer treatment?<\/h1>\n\n

\n Author: Gloss & Floss Dental Care\u00ae \u00b7 Clinically reviewed by a dentist at Gloss & Floss Dental Care\u00ae\n <\/p>\n\n

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Short answer<\/h2>\n

Before cancer treatment, you should have your mouth, teeth and gums checked as early as possible, especially if you are going to have chemotherapy, head and neck radiotherapy, stem cell transplantation, high-dose treatment, immunosuppressive treatment or medicines that affect bone healing. Untreated dental infections, deep cavities, severe gum disease, sharp teeth, poorly fitting dentures or teeth with poor prognosis can cause serious problems during cancer treatment. Dental care before treatment helps reduce infection risk, support healing, protect the teeth and prepare a safe oral-care plan together with your oncology team.<\/p>\n <\/section>\n\n

Why dental care matters before cancer treatment<\/h2>\n

Cancer treatment can affect the mouth in several ways. Chemotherapy and some targeted or immune therapies can reduce the body\u2019s ability to fight infection. Head and neck radiotherapy can affect salivary glands, oral tissues, jawbone healing and long-term tooth decay risk. Some cancer medicines can also affect bone healing after extractions or oral surgery.<\/p>\n

Because of this, dental problems that seem small before treatment may become more serious during treatment. A dental infection, deep cavity or unstable gum problem can cause pain, swelling, treatment delays or the need for urgent dental care at a difficult time.<\/p>\n\n

Who should book a dental check before cancer treatment?<\/h2>\n

A dental check is especially important if your cancer treatment may affect the mouth, immune system, blood counts, saliva, jawbone or healing. This includes many patients preparing for head and neck radiotherapy, chemotherapy, high-dose chemotherapy, stem cell transplantation, bone marrow transplantation, immunosuppressive treatment or cancer medicines linked with jawbone-healing risks.<\/p>\n

Even if your cancer treatment is not in the head or neck area, you should still tell your dentist about the diagnosis and planned treatment. The level of dental preparation depends on your treatment type, urgency, oral health and oncology plan.<\/p>\n\n

What the dentist checks before cancer treatment<\/h2>\n \n \n \n \n \n \n \n \n \n \n
Area checked<\/th>\n What the dentist looks for<\/th>\n Why it matters before cancer treatment<\/th>\n <\/tr>\n <\/thead>\n
Teeth<\/td>\n Cavities, cracks, broken teeth, deep fillings and infected teeth.<\/td>\n Untreated decay or infection can worsen during treatment.<\/td>\n <\/tr>\n
Gums<\/td>\n Gum bleeding, tartar, deep pockets, loose teeth and periodontitis.<\/td>\n Active gum infection can become harder to manage during treatment.<\/td>\n <\/tr>\n
X-rays<\/td>\n Hidden infection, bone loss, root problems and teeth with poor prognosis.<\/td>\n Some problems are not visible without imaging.<\/td>\n <\/tr>\n
Oral mucosa<\/td>\n Sores, ulcers, white patches, red patches, trauma or sharp edges.<\/td>\n Irritated tissues may become more painful during mucositis or dry mouth.<\/td>\n <\/tr>\n
Dentures<\/td>\n Fit, sore spots, hygiene and pressure areas.<\/td>\n Poorly fitting dentures can worsen mucosal injury during treatment.<\/td>\n <\/tr>\n
Saliva and dry-mouth risk<\/td>\n Existing dry mouth, medicines, mouth breathing and cavity history.<\/td>\n Reduced saliva can greatly increase decay and infection risk.<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n

When should you see a dentist before cancer treatment?<\/h2>\n

Ideally, dental assessment should happen as early as possible after the cancer treatment plan is known. If time allows, dental care should be completed early enough for gums, extraction sites and oral tissues to heal before cancer therapy starts.<\/p>\n

If cancer treatment is urgent, do not delay oncology care without instruction from your cancer team. In urgent cancer pathways, the dentist, oncologist, surgeon or hospital dental team may need to prioritise only the most important dental risks.<\/p>\n\n

Why timing matters<\/h2>\n

Some dental procedures, especially extractions or oral surgery, need healing time. This is particularly important before head and neck radiotherapy, because radiotherapy can affect blood supply and jawbone healing in the treated area.<\/p>\n

Dental decisions before cancer treatment are therefore not only about today\u2019s pain. They are also about reducing the risk of future infection, emergency extraction, osteoradionecrosis, severe decay, mucosal trauma and treatment disruption.<\/p>\n\n

Possible dental care before treatment<\/h2>\n \n \n \n \n \n \n \n \n \n \n
Finding<\/th>\n Possible dental care<\/th>\n Purpose<\/th>\n <\/tr>\n <\/thead>\n
Dental infection<\/td>\n Root canal treatment, extraction or other urgent care depending on prognosis.<\/td>\n Reduce infection risk before cancer therapy begins.<\/td>\n <\/tr>\n
Deep cavities<\/td>\n Fillings, root canal assessment or extraction if prognosis is poor.<\/td>\n Prevent pain, abscess or emergency treatment during cancer care.<\/td>\n <\/tr>\n
Severe gum disease<\/td>\n Periodontal assessment, cleaning or removal of teeth with poor prognosis.<\/td>\n Reduce active infection and future complication risk.<\/td>\n <\/tr>\n
Tartar and plaque<\/td>\n Dental hygienist treatment and oral hygiene instruction.<\/td>\n Lower bacterial load and improve gum health.<\/td>\n <\/tr>\n
Sharp teeth or restorations<\/td>\n Smoothing, polishing or repair.<\/td>\n Reduce trauma to tissues during mucositis or dry mouth.<\/td>\n <\/tr>\n
High decay risk<\/td>\n Fluoride plan, preventive care and regular follow-up.<\/td>\n Protect teeth during and after treatment, especially if saliva is reduced.<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n

Head and neck radiotherapy: why dental planning is critical<\/h2>\n

Dental planning is especially important before radiotherapy to the head, neck, mouth, throat, jaw or salivary-gland area. Radiotherapy can reduce saliva flow, increase decay risk, affect jawbone healing and make future extractions more complicated.<\/p>\n

Before radiotherapy, teeth with severe infection, advanced gum disease or poor prognosis in the radiation field may need treatment or removal. These decisions are made carefully because removing a tooth after radiotherapy in the treated jaw can carry higher healing risk.<\/p>\n\n

What is osteoradionecrosis?<\/h2>\n

Osteoradionecrosis is a serious complication where irradiated jawbone has difficulty healing and may become exposed or infected. It is most relevant after high-dose radiotherapy involving the jawbone, especially when extractions or surgery are needed in the irradiated area later.<\/p>\n

The purpose of dental assessment before radiotherapy is to reduce the chance that risky dental extractions will be needed after radiotherapy. This is why dental planning before treatment can be more preventive than symptom-based.<\/p>\n\n

Chemotherapy and dental infection risk<\/h2>\n

Chemotherapy can reduce white blood cells, platelets and healing capacity at certain times during treatment. This can make infections more serious and can make invasive dental treatment riskier during low blood counts.<\/p>\n

Before chemotherapy starts, the dentist may try to stabilise infections, remove active sources of pain, improve gum health and create a prevention plan. During active chemotherapy, invasive dental treatment should usually be coordinated with the oncology team.<\/p>\n\n

Stem cell transplantation and high-dose therapy<\/h2>\n

Patients preparing for stem cell transplantation, bone marrow transplantation or high-dose chemotherapy often need careful dental clearance. The goal is to reduce the risk of oral infection when the immune system is very vulnerable.<\/p>\n

The dental team may need to identify hidden infections, treat urgent problems, remove teeth with poor prognosis, manage gum inflammation and provide oral hygiene instructions before treatment begins.<\/p>\n\n

Bone-modifying cancer medicines and dental care<\/h2>\n

Some cancer patients receive medicines that affect bone healing, such as certain bisphosphonates or denosumab, especially in cases involving bone metastases or specific cancer-related bone risks. Some antiangiogenic medicines can also be relevant for jawbone healing.<\/p>\n

If you are going to receive, or already receive, these medicines, tell your dentist before any extraction, implant treatment or oral surgery. Dental infections should still be treated, but surgical decisions need careful risk assessment and coordination with the medical team.<\/p>\n\n

What to tell your dentist before cancer treatment<\/h2>\n