Thanks for asking the query,
Sodium hypochlorite solution causes burning sensation of the oral mucosa.
It is usually needed in diluted forms to irrigate the canals at the time of root canal treatment.
Due to accidental leakage there is redness
, burning sensation, itching , pain of the affected area.
Apply Dologel oral ointment or Mucopain topically over the affected area.
I would suggest you to gargle with lukewarm saline gargles 3- 4 times a day this will give a soothing effect.
Use antiseptic mouthwash gargles twice daily.
Hope this helps out.