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': 'Dental Aesthetic Index (DAI) was developed by: \nSelect and explain. \nA. Naham C. Cons, Joanna Jenny, and Frank J. Kohout, B. Harry Draker, C. Grainger R.M., D. R.R. Lobene, T. Weather-ford, N.M. Ross, R.A. Lamm, and L. Menaker', 'role': 'user'}, {'content': 'Answer: A \nExplanation: DENTAL AESTHETIC INDEX (DAI):\nThe Dental Aesthetic Index (DAI) was developed by Naham C. Cons, Joanna Jenny, and Frank J. Kohout\xa0in 1986 to assess orthodontic treatment need. It is an orthodontic index based on socially deﬁned\xa0aesthetic norms.\nOrthodontics: Diagnosis of & Management of Malocclusion & Dentofacial Deformities\nO.P. Kharbhanda\xa0 second edition', 'role': 'assistant'}]