[A PhD completed. Long-term effects of childhood cancer therapy on oral health].

In recent years, the five-year survival rate for childhood cancer has increased to about 80%. However, childhood cancer therapy can have serious long-term adverse effects on general health later in life. Of survivors, 75% experience 1 or more late effects. This PhD research aimed to gain more insight into the long-term effects on oral health of childhood cancer therapy, 15 years or more after diagnosis. This study, which is part of the Dutch Childhood Cancer Survivor Study Late Effects 2 (DCCSS LATER 2 Study), showed that oral complications such as dental developmental disorders and hyposalivation occur frequently. Most important risk factors were head and neck radiotherapy of the salivary glands, (alkylating) cytostatic agents, and age at the time of the cancer diagnosis. Dentists should be aware of childhood cancer in the medical history of their patient and of the type of therapy received. Regular dental visits are an essential part of long-term follow-up care of childhood cancer survivors.