Chemotherapy can have significant adverse effects on oral health. It can lead to mucositis, a painful inflammation and ulceration of the mucous membranes lining the digestive tract. Chemotherapy can also cause dry mouth (xerostomia), increased risk of oral infections, and bleeding gums. These side effects make it imperative for cancer patients to maintain rigorous dental hygiene and have regular check-ups with their dentist to manage and mitigate these issues.