title: A new fixed mandibular expansion appliance for uncrowding incisors during early mixed dentition.
authors.forename: J I
authors.initials: JI
authors.lastname: Williams
authors.forename: J M
authors.initials: JM
authors.lastname: Sim
mesh_terms: D002648:Child; D003724:Dental Arch / Q000473:pathology; D003818:Dentition, Mixed; D005260:Female; D006801:Humans; D007180:Incisor / Q000503:physiopathology; D008310:Malocclusion / Q000628:therapy*; D008334:Mandible; D016382:Orthodontic Appliance Design; D017289:Orthodontic Appliances, Functional; D009972:Orthodontics, Interceptive / Q000379:methods*