Dr. Robert M. Ricketts on early treatment. (Part 3)
D002648:Child; D003818:Dentition, Mixed; D006801:Humans; D008310:Malocclusion / Q000628:therapy*; D008445:Maxillofacial Development; D009967:Orthodontic Appliances; D009972:Orthodontics, Interceptive / Q000379:methods*