Mouth Ulcer Treatment Market Trends, Growth, Global Demand Analysis, Size, Share & Opportunity Outlook till 2030| MRFR. Mouth ulcers are painful sores that can develop in the mucous membrane of the oral cavity, and this restrict the ability to chew, bite or eat. Some factors which result in mouth ulcer are stress, infection, injury, allergy, and others which leads to intense pain. Increasing use of synthetics in oral items such as toothpaste and growing unhealthy lifestyle, including high consumption of junk...