Multiples reason for this. Need to do clinical examination first

hello...usually zinc ,vit b ,folic acid deficiency leads t reoccuring mouth ulcers...plz take d test or d same second if any dental prosthesis has a sharp edge avoid stress

Pop up a vit B complex​ tablet once daily. Visit your dentist

You need to check if you have acid regurgitation. If so visit a gastroenterologist. Avoid spicy toothpaste and spicy foods. Avoid very hot food and drinks. Check if you anemic. You might require b vitamins. Stress also contributes to ulcers. Do visit a dentist

Mouth ulcers can happen due to multiple reasons and there is no single "exact cause" of mouth ulcers. It will not be even practical to enumerate the entire causes of mouth ulcers especially those which are multiple and recurrent. A proper clinical examination and detailed history will be required to ascertain the exact cause of your mouth ulcers. Taking multivitamin supplements like B complex and Vitamin C can maintain the health and integrity of the oral tissues but do not sure the answers if they are present. No medication, for that matter, can treat mouth ulcers other than providing temporary symptomatic relief. If the ulcers are due to viral or fungal etiology then antiviral or antifungal medication do play a role in the healing. Changing your brush every two or three months is a good habit and you should continue doing that, something like regularly taking multivitamin supplements. Use of antiseptic mouthwash is which are based on generic composition of chlorhexidine can also improve the oral health if used regularly. Clean your tongue using your toothbrush only every time after you brush your teeth. Do not use metallic or plastic or wooden tongue cleaners because they do more harm than good. Regards.