What to expect from radiotherapy for mouth cancer

The team plans the radiation field with scans and may use a head-and-shoulder mask to keep your position steady. You lie still while the machine delivers treatment; the beams are not felt, and external treatment does not make you radioactive. Your mouth and neck are checked throughout the course.

Because the mouth is in the treatment field, soreness, altered taste, thicker saliva, dry mouth and difficulty chewing or swallowing may appear or worsen gradually. Teeth and gums need special attention. Tiredness is also possible. Effects depend on the exact site and whether surgery or chemotherapy is part of your care.

Attend the dental assessment your team recommends before treatment and follow the prescribed mouth-care routine. Use a soft toothbrush, avoid tobacco and alcohol, and choose soft, moist foods if chewing becomes uncomfortable. Sip fluids as advised and tell the team if swallowing hurts, because a dietitian, speech and swallowing specialist or medicines may help. Do not use mouthwashes, gels or supplements unless your team approves them. Rest, but keep gentle daily movement if you can.

Contact the oncology team promptly if you cannot drink enough, are choking, have worsening mouth ulcers, bleeding, uncontrolled pain, persistent vomiting or a fever. Seek urgent care for severe breathing difficulty, rapidly increasing swelling, confusion or inability to swallow saliva. Tell the team about new dental pain or a sore that is not improving; early treatment can prevent dehydration and nutritional problems.

Do I need dental treatment before radiotherapy? Which mouth-care products are safe? What should I eat if swallowing hurts? Could a mask affect claustrophobia? Which symptoms require a same-day call, and who can help with nutrition?