<prompt> For a full mouth examination, how many IOPAs are required for a child aged 8-9 years?1012814  <response>: Mixed Dentition 7 to 12 Years: A complete examination of the mixed dentition, if indicated, consists of two incisor periapical views, four canine periapical views, four posterior periapical views and two to four posterior bitewing views.Note: For 8-9 years of age, 12 film survey is recommended Principles and practice of Pedodontics by Arathi Rao. So, 12 will be better answer. 