Improved Oral Health in Head and Neck Cancer Survivors

The goal of this clinical trial is to learn if an oral care programme can prevent or reduce late oral side effects in patients with head and neck cancer following treatment. The main questions it aims to answer are:

* Can additional support from hospital dental care for cancer survivors, up to three years after completion of treatment, improve patients' oral health, nutritional status, quality of life, and reduce stress and anxiety compared to standard care? * Are there differences in oral health outcomes between younger and older individuals receiving additional support from hospital dental care? * Can additional support from hospital dental care for cancer survivors, up to three years after completion of treatment, reduce the duration of sick leave and enhance patients' ability to return to work compared to standard care? * Can additional support from hospital dental care for cancer survivors, up to five years after completion of treatment, be cost-effective from a health economic perspective?

Researchers will compare oral care programme to standard care to see if the programme works to improve oral health, reduce oral symptoms and problems, enhance quality of life and lower the economic costs of healthcare

Participants will:

Participate in an oral care programme, every three months for three years.