title: Evaluation of cervico-occlusal dimensions of maxillary and mandibular incisor brackets for lingual orthodontics.
abstract: OBJECTIVE
  The purpose of this study was to analyze the cervico-occlusal dimensions of brackets used in lingual orthodontics for maxillary and mandibular central and lateral incisors, to compare them with the numbers informed by the manufacturer.
  
  
  METHODS
  The brackets were placed in a template and analyzed by scanning electron microscopy (SEM), evaluating the images with the aid of a software that allowed determination of reference points, tracing of lines on the bracket images and measurement of the distances.
  
  
  RESULTS
  Brackets manufactured by Dm Ceosa Hiro, Tecnident PSWb and Dentaurum Magic did not present statistically significant differences between the mean values of slot heights and the values informed by manufacturers. Conversely, the brands Ormco 7th generation, Ormco STb, GAC Innovation L, ORJ-ORG, Tecnident, Ormco STb LSW and Adenta evolution STL exhibited statistically significant differences.
  
  
  CONCLUSIONS
  In general, there was a deficiency in the standar-dization of cervico-occlusal measurements of slots of the brackets analyzed.
  
  
  CONCLUSIONS
  Manufacturers should be attentive to the quality control of their materials. Future studies will analyze the actual clinical influence of these findings on the orthodontic mechanics.
authors.affiliation: Professor, Department of Orthodontics, Vellini Institute, São Paulo Brazil.
authors.forename: Andréia
authors.initials: A
authors.lastname: Cotrim-Ferreira
authors.affiliation: Professor, Department of Orthodontics, Vellini Institute, São Paulo Brazil.
authors.forename: Flávio
authors.initials: F
authors.lastname: Cotrim-Ferreira
authors.affiliation: Professor, Department of Orthodontics, Vellini Institute, São Paulo Brazil.
authors.forename: Flávio
authors.initials: F
authors.lastname: Vellini-Ferreira
authors.affiliation: Postgraduate Student, Department of Orthodontics, São Paulo City University-UNICID, São Paulo, SP, Brazil.
authors.forename: Daniele Fernanda
authors.initials: DF
authors.lastname: Peron
authors.affiliation: Postgraduate Student, Department of Orthodontics, Vellini Institute, São Paulo Brazil.
authors.forename: Carlos
authors.initials: C
authors.lastname: Carvalho
authors.affiliation: Professor, Department of Orthodontics, São Paulo City University-UNICID, São Paulo, SP, Brazil, e-mail: fernandozzy@hotmail.com.
authors.forename: Fernando César
authors.initials: FC
authors.lastname: Torres
mesh_terms: D001696:Biomechanical Phenomena; D003722:Dental Alloys / Q000737:chemistry; D001840:Dental Bonding; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology; D008334:Mandible; D008422:Materials Testing; D008437:Maxilla; D016382:Orthodontic Appliance Design / Q000592:standards*; D016910:Orthodontic Brackets / Q000592:standards*; D013193:Stainless Steel / Q000737:chemistry; D013499:Surface Properties; D019237:Tooth Cervix / Q000033:anatomy & histology; D019228:Tooth Crown / Q000033:anatomy & histology; D014087:Tooth Movement Techniques / Q000295:instrumentation*; D019415:Torque
chemical_list: D003722:Dental Alloys; D013193:Stainless Steel