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.
All reasoning has a purpose. All reasoning is an attempt to figure something out, to settle some question, to solve some problem. All reasoning is based on assumptions. All reasoning is done from some point of view. All reasoning is based on data, information, and evidence.