title: Esthetic perception of maxillary lateral incisor agenesis treatment by canine mesialization.
abstract: The objective of this study was to evaluate perception of the smile in maxillary lateral incisor agenesis (MLIA) cases treated by mesialization of a canine.
  
  
  METHODS
  Nine images were digitally modified from the same frontal intraoral photograph to simulate various treatment options for space closure in MLIA. A questionnaire was submitted to laypersons (303), general dentists (215), prosthodontists (55) and orthodontists (81). Statistical tests with a significance level of P<0.05 were used.
  
  
  RESULTS
  The views of MLIA treatment judged to be most attractive showed unilateral dental and gingival reshaping. All study groups considered the simple dental reshaping of the mesial edge of the canine to be attractive. In the analysis of the images grouped together for both unilateral and bilateral MLIA, the view showing dental and gingival reshaping was considered the most attractive whereas unmodified mesialization was considered the least attractive.
  
  
  CONCLUSIONS
  Regarding the space closure treatments, although all groups regarded simple dental reshaping of the canine to be attractive, the dental professionals considered gingival and crown reshaping to be more esthetic. In contrast, laypersons were not significantly responsive to this dental and gingival modification as compared to only slight reshaping of the mesial edge of the cusp of the mesialized canine in MLIA.
authors.affiliation: Instituto universitário de Ciências da Saúde, CESPU, Instituto de Investigacão e Formação Avançada em Ciências e Tecnologias da Saúde (IINFACTS), 1317, Rua Central de Gandra, 4585-116 Gandra, PRD, Portugal.
authors.forename: Antonino
authors.initials: A
authors.lastname: Mota
authors.affiliation: Instituto universitário de Ciências da Saúde, CESPU, Instituto de Investigacão e Formação Avançada em Ciências e Tecnologias da Saúde (IINFACTS), 1317, Rua Central de Gandra, 4585-116 Gandra, PRD, Portugal. Electronic address: Teresa.pinho@iscsn.cespu.pt.
authors.forename: Teresa
authors.initials: T
authors.lastname: Pinho
mesh_terms: D001291:Attitude of Health Personnel; D001294:Attitude to Health; D004955:Esthetics, Dental; D006801:Humans; D007180:Incisor; D008437:Maxilla
keywords: Esthetic perception; Maxillary lateral incisor agenesis (MLIA); Space closure