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': 'The index described by Brooke and Shaw to assess orthodontic treatment need from an anatomical and aesthetic perspective is: \nSelect and explain. \nA. Orthodontic Treatment Priority Index (TPI), B. Index of Orthodontic Treatment Need (IOTN), C. Index of Complexity Outcome and Need (ICON), D. Dental Aesthetic Index (DAI)', 'role': 'user'}, {'content': 'Answer: B \nExplanation: INDEX OF ORTHODONTIC TREATMENT NEED (IOTN):\nThe Index of Orthodontic Treatment Needs (IOTN) was described in 1989 by R H. Brook and W.C. Shaw\xa0to assess orthodontic treatment need from an anatomical and aesthetic perspective.\nEssentials of preventive and community dentistry\xa0\nSoben Peter\xa0\n5th edition', 'role': 'assistant'}]