title: Clinical evaluation for chin augmentation: literature review and algorithm proposal.
abstract: BACKGROUND
  The esthetic balance of the face results from harmonic and symmetrical facial proportions. The literature describes several methods for lower-third facial analysis, but lacks a simple and practical method.
  
  
  OBJECTIVE
  To review the methods of analysis of the ideal projections of the chin based on soft tissues, showing the advantages and disadvantages of each.
  
  
  METHODS
  Literature review through the PubMed database.
  
  
  RESULTS
  The following methods for chin analysis based on soft tissues were reviewed: Gonzalles-Ulloa, Goode, Merrifield, Silver, Legan, Gibson & Calhoun, cervicomentual angle, and mentocervical angle.
  
  
  CONCLUSIONS
  An adequate analysis of the proportions of the face and facial disharmony is essential for the correct indication of the necessary procedures and good surgical outcome. The authors propose an algorithm to facilitate the indication for chin augmentation surgery.
authors.affiliation: Universidade de São Paulo (USP), Departamento de Otorrinolaringologia, São Paulo, SP, Brazil. Electronic address: helenaharroyo@hotmail.com.
authors.forename: Helena Hotz
authors.initials: HH
authors.lastname: Arroyo
authors.affiliation: Universidade de São Paulo (USP), Departamento de Otorrinolaringologia, São Paulo, SP, Brazil.
authors.forename: Isabela Peixoto
authors.initials: IP
authors.lastname: Olivetti
authors.affiliation: Instituto Jurado de Educação e Pesquisa, São Paulo, SP, Brazil.
authors.forename: Leila Freire Rego
authors.initials: LF
authors.lastname: Lima
authors.affiliation: Instituto Jurado de Educação e Pesquisa, São Paulo, SP, Brazil.
authors.forename: José Roberto Parisi
authors.initials: JR
authors.lastname: Jurado
mesh_terms: D000465:Algorithms; D002680:Chin / Q000601:surgery*; D063172:Genioplasty / Q000379:methods*; D006801:Humans
keywords: Chin; Cirurgia plástica; Desenvolvimento maxilo-facial; Genioplasty; Jaw; Mandíbula; Maxillofacial development; Mentoplastia; Plastic surgery; Queixo
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