Influence of maxillary incisor edge asymmetries on the perception of smile esthetics among orthodontists and laypersons

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dc.contributor.authorMacHado, Andre Wilson
dc.contributor.authorMoon, Won
dc.contributor.authorGandini Júnior, Luiz Gonzaga [UNESP]
dc.contributor.institutionUniversidade Federal da Bahia (UFBA)
dc.contributor.institutionUniversity of California at Los Angeles
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionBaylor College of Dentistry
dc.contributor.institutionSaint Louis University
dc.date.accessioned2014-05-27T11:29:01Z
dc.date.available2014-05-27T11:29:01Z
dc.date.issued2013-05-01
dc.description.abstractIntroduction: Our objective was to determine the perception of smile esthetics among orthodontists and laypeople with respect to asymmetries on the maxillary incisor edges in a frontal smile analysis. Methods: Two frontal close-up smile photos of 2 women, 1 white and 1 Afro-Brazilian, were selected for this study. Both smiles displayed healthy maxillary anterior dentitions. The images were digitally altered to create tooth wear on the maxillary left central and lateral incisors in 0.5-mm increments. The final images were randomly assembled into a photo album that was given to 120 judges, 60 orthodontists and 60 laypersons. Each rater was asked to evaluate the attractiveness of the images with visual analog scales. The data collected were statistically analyzed with 1-way analysis of variance with the Tukey post-hoc test and the unpaired Student t test. Results: The most attractive smiles in both types of smiles were those without asymmetries and the 0.5-mm wear in the lateral incisor. In general, tooth wear was considered unattractive by both groups of raters following a pattern: the more tooth wear, the more unattractive the smile; tooth wear in the central incisor was considered more unattractive than in the lateral incisor. For both group of raters, 0.5 mm of wear in the central incisor was considered unattractive, whereas the thresholds for lateral incisor discrepancies were 0.5 mm for orthodontists and 1.0 mm for laypersons. Conclusions: The result of this study corroborates the clinical assumption that symmetry between the maxillary central incisors is a paramount goal for esthetic treatments. Copyright © 2013 by the American Association of Orthodontists.en
dc.description.affiliationSection of Orthodontics Dental School Federal University of Bahia, Salvador, Bahia
dc.description.affiliationSection of Orthodontics School of Dentistry University of California at Los Angeles, CA
dc.description.affiliationSchool of Dentistry Paulista State University, Araraquara, São Paulo
dc.description.affiliationBaylor College of Dentistry, Dallas, TX
dc.description.affiliationSaint Louis University, St Louis, MO
dc.description.affiliationUnespSchool of Dentistry Paulista State University, Araraquara, São Paulo
dc.format.extent658-664
dc.identifierhttp://dx.doi.org/10.1016/j.ajodo.2013.02.013
dc.identifier.citationAmerican Journal of Orthodontics and Dentofacial Orthopedics, v. 143, n. 5, p. 658-664, 2013.
dc.identifier.doi10.1016/j.ajodo.2013.02.013
dc.identifier.issn0889-5406
dc.identifier.lattes6493049604923160
dc.identifier.scopus2-s2.0-84876931430
dc.identifier.urihttp://hdl.handle.net/11449/75200
dc.identifier.wosWOS:000318065300010
dc.language.isoeng
dc.relation.ispartofAmerican Journal of Orthodontics and Dentofacial Orthopedics
dc.relation.ispartofjcr1.842
dc.relation.ispartofsjr1,289
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectadult
dc.subjectattitude to health
dc.subjectcomparative study
dc.subjectdental procedure
dc.subjectfacial expression
dc.subjectfemale
dc.subjecthealth personnel attitude
dc.subjecthemispheric dominance
dc.subjecthistology
dc.subjecthuman
dc.subjectincisor
dc.subjectmale
dc.subjectmaxilla
dc.subjectorthodontics
dc.subjectpsychological aspect
dc.subjectstatistics
dc.subjecttooth crown
dc.subjecttooth disease
dc.subjectAdult
dc.subjectAttitude of Health Personnel
dc.subjectAttitude to Health
dc.subjectEsthetics, Dental
dc.subjectFemale
dc.subjectFunctional Laterality
dc.subjectHumans
dc.subjectIncisor
dc.subjectMale
dc.subjectMaxilla
dc.subjectOrthodontics
dc.subjectSmiling
dc.subjectTooth Crown
dc.subjectTooth Wear
dc.titleInfluence of maxillary incisor edge asymmetries on the perception of smile esthetics among orthodontists and laypersonsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
unesp.author.lattes6493049604923160
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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