title: Unanswered questions.
authors.forename: Terrance J
authors.initials: TJ
authors.lastname: Spahl
authors.forename: David J
authors.initials: DJ
authors.lastname: Turpin
mesh_terms: D035081:Editorial Policies; D006801:Humans; D008310:Malocclusion / Q000150:complications*; D008445:Maxillofacial Development; D017289:Orthodontic Appliances, Functional / Q000009:adverse effects*; D009971:Orthodontics, Corrective / Q000009:adverse effects*; D013705:Temporomandibular Joint Disorders / Q000209:etiology*