Variable continuous forces.
D003764:Dental Materials; D006801:Humans; D008310:Malocclusion / Q000628:therapy*; D009967:Orthodontic Appliances; D009971:Orthodontics, Corrective; D011312:Pressure; D012408:Rubber; D013997:Time Factors; D014081:Tooth Extraction
D003764:Dental Materials; D012408:Rubber