The rationale for various modes of retention.
D003724:Dental Arch / Q000473:pathology; D006801:Humans; D008310:Malocclusion / Q000473:pathology / Q000517:prevention & control; D009967:Orthodontic Appliances; D009968:Orthodontic Appliances, Removable; D012008:Recurrence; D012399:Rotation; D014070:Tooth / Q000473:pathology; D014716:Vertical Dimension