<s>[INST] Hi, my father (Age-60 yrs) has reoccurring tongue ulcer, there is no pain or itching or irritation but only abrasion. Just for the information 2 weeks ago had gone to dentist for removing the upper molar tooth due to decay. Medicine taken:-B complex capsule Please Advise [/INST] Hello!Welcome to HCM.Recurring tongue ulcers can be due to a sharp tooth.Make sure a sharp tooth doesnt irritate the area.Check if unhygienic dentures  are present.Avoid smoking and alcoholismBe stress free.Take B12, iron and folic acid supplements.maintain proper oral hygiene.You can apply a soothing gel like Gumtone which prevents any secondary infection.Extraction as such will not cause tongue ulcers but, it may be secondary to the antibiotics used after extraction.Regards. </s>