Gum fistula but no toothache may be caused by apical periodontitis gingival fistula, may also be due to jawbone cysts caused by gingival fistula, the former need to be treated by root canal treatment, the latter need to be treated by surgical removal of jawbone cysts. 1. Gingival fistula but no toothache, may be due to periapical periodontitis caused by gingival fistula, and the pulp nerve necrosis, so there is no symptom of toothache, the treatment of periapical periodontitis need to carry out endodontic treatment, and need to carry out apicoectomy surgery. 2. Gingival fistula but no toothache, may also be due to jawbone cysts caused by gingival fistula, due to the pus through the fistula in time, so there is no obvious pain, this situation needs to be surgically removed jawbone cysts, excision of the fistula to be treated. If you find a fistula in your gums but your teeth do not hurt, it is recommended that you consult a doctor promptly to find out the cause and have the doctor dispose of it.