Quantification of the force systems delivered by transpalatal arches activated in the six Burstone geometries

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dc.contributor.authorSakima, Maurício Tatsuei [UNESP]
dc.contributor.authorDalstra, Michel
dc.contributor.authorLoiola, Angelo Vicentini
dc.contributor.authorGameiro, Gustavo Hauber
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAarhus University
dc.contributor.institutionPaulista Assoc. of Dental
dc.contributor.institutionFederal University of Rio Grande Do sul (UFRGS)
dc.date.accessioned2018-12-11T17:33:06Z
dc.date.available2018-12-11T17:33:06Z
dc.date.issued2017-07-01
dc.description.abstractObjective: To evaluate the force systems produced by transpalatal arches (TPAs) activated according to the six classes of geometries described by Burstone and Koenig. Materials and Methods: Sixty appliances were tested for first-order activations using a mechanical force testing system. The TPAs were first checked for passivity in sagittal, transverse, and vertical planes at the measuring machine. Then 10 appliances per group were activated using a millimeter template to obtain the six classes of geometries, and the activated appliances were inserted into lingual tubes of the Force System Identification machine that recorded the deactivation forces and moments delivered by both terminal ends of the TPAs. Results: The overall force system with the actual values of forces and moments recorded by each type of activation was illustrated and compared with the mathematical model reported by Burstone and Koenig. Although a great consistency of the direction of forces and moments were observed, the theoretically feasible force systems could not be fully accomplished by the TPA activated for the six classes of geometries. Conclusion: The first-order activations of the TPA can deliver predictable force systems in respect to the direction of forces and moments attainable, but some unexpected forces and moments are also produced. Careful clinical monitoring is, therefore, strongly recommended when using this statically indeterminate system. (Angle Orthod. 2017;87:542-548).en
dc.description.affiliationAraraquara School of Dentistry State University of São Paulo (UNESP)
dc.description.affiliationSchool of Dentistry Aarhus University
dc.description.affiliationPaulista Assoc. of Dental
dc.description.affiliationDepartment of Physiology Federal University of Rio Grande Do sul (UFRGS), Rua Sarmento Leite 500
dc.description.affiliationUnespAraraquara School of Dentistry State University of São Paulo (UNESP)
dc.format.extent542-548
dc.identifierhttp://dx.doi.org/10.2319/041316-302.1.1
dc.identifier.citationAngle Orthodontist, v. 87, n. 4, p. 542-548, 2017.
dc.identifier.doi10.2319/041316-302.1.1
dc.identifier.issn1945-7103
dc.identifier.issn0003-3219
dc.identifier.scopus2-s2.0-85021925911
dc.identifier.urihttp://hdl.handle.net/11449/179003
dc.language.isoeng
dc.relation.ispartofAngle Orthodontist
dc.relation.ispartofsjr1,267
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectOrthodontic appliances
dc.subjectTranspalatal bar
dc.titleQuantification of the force systems delivered by transpalatal arches activated in the six Burstone geometriesen
dc.typeArtigo

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