[Gilles Paling]

Hello Dr Nasseh,
I am a dental at a university where they are reluctant to allow us to use anaesthesia especially if the pulp is considered necrotic. One day I had a case where the patient did not feel any pain during caries removal without anaesthetic, however he did start to feel pain during determination of working length and and cleaning and shaping to working length. Do you have any idea how this could be considering that the pulp was necrotic?