If your mouth ulcer has not healed even after 9 days, it?s better to get it checked by a doctor or dentist to rule out infection, vitamin deficiency, or other causes.

For a 3-year-old child, using Smyle Gel should be done with caution, as many mouth ulcer gels may contain ingredients not fully safe for very young children if swallowed. Before using Smyle gel or avoiding Zytee RB Gel, it?s best to consult a pediatrician

A bitten tongue usually heals on its own within a few days, so treatment mainly focuses on reducing pain and preventing infection. Avoid spicy, hot, or hard foods, and see a doctor if swelling, severe pain, or delayed healing occurs.

You can apply soothing oral gels like Dologel CT or Zytee RB Gel to reduce pain and speed healing, and avoid spicy or hot foods. If the blister keeps recurring, becomes very large, or does not heal within 1?2 weeks, consult a doctor to rule out other causes.