Hello,
What you seem to be asking is about the oral ulcerations in which the different layers of mucosa are lost. It will regrow with adequate treatment which consists of antihistamines, antacids, corticosteroids, oral analgesics such as paracetamol or ibuprofen and local anaesthetic lozenges, paints or mouth rinses such as benzocaine and avoiding spicy or hot foods.
I sincerely hope that helps. Take care and please do keep me posted on how you are doing.