Generally, the removal of brackets will not affect teeth, which may be caused by poor oral hygiene during orthodontic treatment. I don't know what you mean by tooth nerve bleeding. The general manifestation is only gingival bleeding. If it is tooth nerve congestion, it is often manifested as pain, tooth discoloration and other clinical manifestations. I don't know how you know about the bleeding in your teeth. Generally speaking, the inflammation of dental pulp is treated by removing the infected nerve and then performing root canal therapy, preferably full crown restoration.