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
The index described by Brooke and Shaw to assess orthodontic treatment need from an anatomical and aesthetic perspective is: 
Select and explain. 
A. 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)
B: Index of Orthodontic Treatment Need (IOTN)
Answer: B: Index of Orthodontic Treatment Need (IOTN) 
Explanation: INDEX OF ORTHODONTIC TREATMENT NEED (IOTN):
The Index of Orthodontic Treatment Needs (IOTN) was described in 1989 by R H. Brook and W.C. Shaw to assess orthodontic treatment need from an anatomical and aesthetic perspective.
Essentials of preventive and community dentistry 
Soben Peter 
5th edition