title: Modified Cast-Metal Haas-Type Expander for Correction of Impacted Upper First Molars in the Mixed Dentition.
authors.affiliation: Department of Orthodontics, University of Insubria, Varese, Italy; In the Private Practice of Orthodontics in Querceta, Italy. mattiafontana16@gmail.com.
authors.forename: Mattia
authors.initials: M
authors.lastname: Fontana
authors.affiliation: In the Private Practice of Orthodontics in Sesto Calende, Italy.
authors.forename: Alessandra
authors.initials: A
authors.lastname: Cafagna
authors.affiliation: Department of Orthodontics, School of Dental Medicine, University of Cagliari, Cagliari, Italy; Scientific Committee, Unita Operative Odontoiatria, IRCCS Istituto Giannina, Gaslini, Genoa, Italy; and In the Private Practice of Orthodontics in La Spezia, Italy.
authors.forename: Mauro
authors.initials: M
authors.lastname: Cozzani
mesh_terms: D002648:Child; D003722:Dental Alloys / Q000737:chemistry; D003818:Dentition, Mixed; D005260:Female; D006801:Humans; D008297:Male; D008963:Molar / Q000473:pathology*; D024343:Open Bite / Q000628:therapy; D016382:Orthodontic Appliance Design; D050793:Orthodontic Extrusion / Q000295:instrumentation; D010155:Palatal Expansion Technique / Q000295:instrumentation*; D014061:Tongue Habits / Q000628:therapy; D014095:Tooth, Impacted / Q000628:therapy*
chemical_list: D003722:Dental Alloys