The time factor in orthodontics.
D002648:Child; D002675:Child, Preschool; D006801:Humans; D008310:Malocclusion / Q000628:therapy*; D009971:Orthodontics, Corrective; D010347:Patient Care Planning; D013997:Time Factors; D014078:Tooth Eruption; D014081:Tooth Extraction; D014086:Tooth Mobility