title: Orthodontic Extrusion as Treatment Option for Crown-Root Fracture: Literature Review with Systematic Criteria.
abstract: To review the literature searching for a consensus for the choice of orthodontic extrusion as treatment for crown-root fracture.
  
  
  
  An electronic search was performed in the databases PubMed, Cochrane Central Register of Controlled Trials and Scopus and a manual search of the Journal Dental Traumatology.
  
  
  
  Forty articles were found in PubMed and 38 in Scopus and after removal of duplicate sample 51 contained articles. Of these, 48 were excluded for not having orthodontic treatment, no follow-up or follow-up less than 6 months, or not report the presence of crown-root fracture. In manual search in Dental Traumatology 20 articles were found, but none of them met the prerequisites established. So, three articles formed the basis of the study.
  
  
  
  The choice of how to treat orthodontic extrusion of crown-root fracture was effective and stable, without root and periodontal changes. Factors, such as root formation and presence of pulp vitality were decisive for determining the stages of treatment, however, there is no consensus based on scientific evidence about these protocols.
authors.affiliation: Masters Student, Department of Pediatric and Community Dentistry, Dentistry School of Aragatuba-UNESP, Aragatuba, Sao Paulo, Brazil, Phone: +551836363236, e-mail: lorrainepfaria@gmail.com.
authors.forename: Lorraine Perciliano de
authors.initials: LP
authors.lastname: Faria
authors.affiliation: Department of Surgery and Integrated Clinic, School Dentistry of Aracatuba-UNESP, Aracatuba, Sao Paulo, Brazil.
authors.forename: Melyna Marques de
authors.initials: MM
authors.lastname: Almeida
authors.affiliation: Department of Surgery and Integrated Clinic, School Dentistry of Aracatuba-UNESP, Aracatuba, Sao Paulo, Brazil.
authors.forename: Marina Fuzette
authors.initials: MF
authors.lastname: Amaral
authors.affiliation: Department of Dental Materials and Prosthodontics, School Dentistry of Aracatuba-UNESP, Aracatuba, Sao Paulo, Brazil.
authors.forename: Eduardo Piza
authors.initials: EP
authors.lastname: Pellizzer
authors.affiliation: Department of Surgery and Integrated Clinic, School Dentistry of Aracatuba-UNESP, Aracatuba, Sao Paulo, Brazil.
authors.forename: Roberta
authors.initials: R
authors.lastname: Okamoto
authors.affiliation: Department of Pediatric and Community Dentistry, Dentistry School of Aragatuba-UNESP, Aragatuba, Sao Paulo, Brazil.
authors.forename: Marcos Rogério
authors.initials: MR
authors.lastname: Mendonça
mesh_terms: D006801:Humans; D050793:Orthodontic Extrusion / Q000379:methods*; D019228:Tooth Crown / Q000293:injuries*; D014082:Tooth Fractures / Q000628:therapy*; D014092:Tooth Root / Q000293:injuries*; D016896:Treatment Outcome
keywords: Orthodontic extrusion; Orthodontics; Tooth injuries