The pulp becomes necrotic because of tooth trauma or tooth decay, and the tooth will appear greyish-black. Endodontic treatment must be done to treat the discoloured tooth which has pulp necrosis. If teeth still appear greyish-black, dentist can treat the discolored teeth by bleaching , laminate veneer or crown .
Reasoning, as a way of proving arguments, comes in many different forms. Different forms of reasoning are accepted in different fields and contexts. Arguing with family members generally relies on different methods of reasoning than arguing with professors.
In philosophy and logic, an argument is a series of statements typically used to persuade someone of something or to present reasons for accepting a conclusion. The general form of an argument in a natural language is that of premises (typically in the form of propositions, statements or sentences) in support of a claim: the conclusion.