The index described by Brooke and Shaw to assess orthodontic treatment need from an anatomical and aesthetic perspective is:

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