How long does it take for oral ulcers to heal after completion of radiation therapy?

The recovery time for oral ulcers after completion of radiation therapy varies among individuals, but healing generally occurs gradually within 2 to 4 weeks after the end of treatment. During this period, tissue repair and regeneration begin, and symptoms such as redness, erosion, and ulceration of the oral mucosa gradually subside and heal. Specifically, with proper post-radiation care and active implementation of effective treatments—such as using healing-promoting medications, compound corticosteroid powders, or Zhuhuang Powder—wound healing can be accelerated, potentially within about 2 weeks. However, if post-radiation care is inadequate or treatment is delayed, recovery may take longer, extending up to approximately 4 weeks. During the recovery period, maintaining good oral hygiene and avoiding irritating foods and beverages can help speed up the healing of oral ulcers. If ulcers persist or symptoms worsen, it is advisable to seek timely medical attention and professional guidance from an oral health specialist.