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.
How well a student is reasoning depends on how well he/she applies these universal standards to the elements (or parts) of thinking. What follows are some guidelines helpful to students as they work toward developing their reasoning abilities: 1  All reasoning has a PURPOSE: Take time to state your purpose clearly. 2  All reasoning is an attempt to FIGURE SOMETHING OUT, TO SETTLE SOME QUESTION, TO SOLVE SOME PROBLEM: Take time to clearly and precisely state the question at issue.