Comparison of anterior retraction and anchorage control between en masse retraction and two-step retraction: A randomized prospective clinical trial

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dc.contributor.authorSchneider, Patricia Pigato [UNESP]
dc.contributor.authorGandini Junior, Luiz Gonzaga [UNESP]
dc.contributor.authorMonini, Andre da Costa
dc.contributor.authorPinto, Ary dos Santos [UNESP]
dc.contributor.authorKim, Ki Beom
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionSt Louis Univ
dc.date.accessioned2019-10-04T12:35:34Z
dc.date.available2019-10-04T12:35:34Z
dc.date.issued2019-03-01
dc.description.abstractObjectives: The purpose of this two-arm parallel trial was to compare en masse (ER) and two-step retraction (TSR) during space closure. Materials and Methods: Forty-eight adult patients with bimaxillary protrusion who were planned for treatment with extraction of four first premolars were enrolled. All patients were randomly allocated in a 1: 1 ratio to either the ER (n = 24) group or the TSR (n = 24) group. The main outcome was the amount of posterior anchorage loss in the molars and the retraction of the incisors between ER and TSR; the difference in incisor and molar inclination was a secondary outcome. Lateral cephalometric radiographs and oblique cephalometric radiographs at 458 were taken before retraction (T1) and after space closure (T2). Cephalograms were digitized and superimposed on the anatomic best fit of the maxilla and mandible by one operator who was blinded to the treatment group. Results: Neither incisor nor molar crown movements showed any significant differences between the ER and TSR. There were no significant differences in the tipping of incisors and molars between the two groups. Conclusions: No significant differences existed in the amount of retraction of incisors and anchorage loss of molars between ER and TSR. Changes in incisor and molar tipping were similar, with the crowns showing more movement than the apex.en
dc.description.affiliationUNESP Sao Paulo State Univ, Sch Dent Araraquara, Dept Orthodont, Araraquara, SP, Brazil
dc.description.affiliationSt Louis Univ, Dept Orthodont, Ctr Adv Dent Educ, St Louis, MO 63103 USA
dc.description.affiliationUnespUNESP Sao Paulo State Univ, Sch Dent Araraquara, Dept Orthodont, Araraquara, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipSchool of Dentistry at Araraquara (UNESP), Brazil
dc.description.sponsorshipCenter for Advanced Dental Education (CADE), USA
dc.description.sponsorshipIdFAPESP: 08/57644-9
dc.format.extent190-199
dc.identifierhttp://dx.doi.org/10.2319/051518-363.1
dc.identifier.citationAngle Orthodontist. Newton N: E H Angle Education Research Foundation, Inc, v. 89, n. 2, p. 190-199, 2019.
dc.identifier.doi10.2319/051518-363.1
dc.identifier.issn0003-3219
dc.identifier.lattes6493049604923160
dc.identifier.urihttp://hdl.handle.net/11449/185444
dc.identifier.wosWOS:000459005400002
dc.language.isoeng
dc.publisherE H Angle Education Research Foundation, Inc
dc.relation.ispartofAngle Orthodontist
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectEn masse retraction
dc.subjectTwo-step retraction
dc.subjectAnchorage loss
dc.subjectRetraction
dc.subjectSpace closure
dc.subjectOrthodontics
dc.titleComparison of anterior retraction and anchorage control between en masse retraction and two-step retraction: A randomized prospective clinical trialen
dc.typeArtigo
dcterms.rightsHolderE H Angle Education Research Foundation, Inc
unesp.author.lattes6493049604923160
unesp.author.lattes6562540057111580[4]
unesp.author.orcid0000-0003-3355-0001[4]

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