During a root canal treatment, a dentist let hydrogen peroxide spill under the tongue and on the lips of my wife, leading to a coral whitening and severe burning sensation. Two days have gone and the burning sensation is still ongoing in th mouth with difficulty to eat and drink...she used difflam gargle to heal but the burning seems to intensify..How can the burning be reduced..warm water gargle etc help, help
Hi.comes, HY Chat Doctor.  Pz check the vitamin deficiency most likely it b and c. Application of intro oral gel for will give her the relief. And consult dentist if still symptoms persist.  Take care