âThere is no meaningful inclusion for the disruptive pupil, and it is not rewarding nor satisfying for staff.â âMany teachers are also angry at what they claim is a lack of funding for support to deal with disruptive pupils.â
Bleach contains sodium hypochlorite, a toxic chemical that is poisonous when inhaled or ingested. Symptoms of sodium hypochlorite poisoning from inhalation include coughing, burning eyes, burning throat, burning esophagus and chest pain. Medline Plus also advises never to mix bleach with ammonia.
From Whitening Trays: Potential teeth whitening side effects associated with teeth whitening trays used for either at-home or professional treatments include sensitivity when the trays are left on too long (which can also potentially occur if strips are left on too long), and irritation to the tissues in the mouth if bleaching solution leaks out of ill-fitting trays.