This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'Adhesive remnant index score 3? \nSelect and explain. \nA. 3/4remnant, B. 1/4 remnant, C. Not remnant, D. Complete remnant', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Artun and Bergland used an adhesive remnant index system to evaluate the amount of adhesive left on tooth after debracketing. This index was developed on basis of a pilot study of 20 extracted teeth and criteria includes\nScore 0... No adhesive left on tooth\nScore 1...less than half of adhesive left on tooth\nScore 2...more than Half of adhesive left on tooth\nScore 3...all adhesive left on tooth with a distinct impression of bracket mesh.', 'role': 'assistant'}]