Lombardo, Luca Frictional resistance exerted by different lingual and labial brackets: an in vitro study. [electronic resource] - Progress in orthodontics Oct 2013 - 37 p. digital Publication Type: Comparative Study; Journal Article ISSN: 2196-1042 Standard No.: 10.1186/2196-1042-14-37 doi Subjects--Topical Terms: Dental Alloys--chemistryDental Stress Analysis--instrumentationElastomers--chemistryFrictionHumansMaterials TestingMechanical PhenomenaModels, DentalNickel--chemistryOrthodontic Appliance DesignOrthodontic Brackets--classificationOrthodontic WiresStress, MechanicalSurface PropertiesTitanium--chemistry