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What is Four film survey (series) for children consists of maxillary and mandibular occlusals along with: and explain in detail?
4 film survey requires 2 anterior occlusal and 2 bitewing radiographs.
8 film survey requires 4 posterior, 2 anterior occlusal and 2 bitewing radiographs.
12 film survey requires 4 IOPAs for posterior teeth, 4 canine IOPAs, 2 incisor IOPAs and 2 bitewing radiographs.
16 film survey requires 4 permanent molar radiographs additional to the 12 film survey.

Ref: Principles and practice of Pedodontics by Arathi Rao