dc.creatorDOBRANSZKI, A.
dc.creatorLEVY NETO, F.
dc.creatorDOBRANSZKI, N. C.
dc.creatorVuolo, Jose Henrique
dc.creatorLABOISSIERE JR, M. A.
dc.date.accessioned2012-10-20T04:00:23Z
dc.date.accessioned2018-07-04T15:39:08Z
dc.date.available2012-10-20T04:00:23Z
dc.date.available2018-07-04T15:39:08Z
dc.date.created2012-10-20T04:00:23Z
dc.date.issued2010
dc.identifierMATERIA-RIO DE JANEIRO, v.15, n.3, p.405-412, 2010
dc.identifier1517-7076
dc.identifierhttp://producao.usp.br/handle/BDPI/29044
dc.identifierhttp://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=EndNote&UT=000288248800003&Init=Yes&SrcAuth=ResearchSoft&mode=FullRecord
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1625686
dc.description.abstractThe objective of this study was to evaluate the stress distribution in the resin in contact with the spirals of cylindrical and conical mini-implants, when submitted to lateral load and insertion torsion. A photoelastic model was fabricated using transparent gelatin to simulate the alveolar bone. The model was observed with a plane polariscope and photographically recorded before and after activation of the two screws with a lateral force and torsion. The lateral force application caused bending moments on both mini-implants, with the uprising of fringes or isochromatics, characteristics of stresses, along the threads of the mini-implants and in the apex. When the torsion was exerted in the mini-implants, a great concentration of stress upraised close to the apex. The conclusion was that, comparing conical with cylindrical mini-implants under lateral load, the stresses were similar on the traction sides. The differences appear (1) on the apex, where the cylindrical mini-implant showed a greater concentration of stress, and (2) along the spirals, in the compression side, where the conical mini-implant showed a greater concentration of stress. The greater part of the stress produced by both mini-implants, after torsion load in insertion, were concentrated on the apex. With the cylindrical mini-implant, the greater concentration of tension was close to the apex, while with the conical one, the stresses were distributed along a greater amount of apical threads.
dc.languagepor
dc.publisherUNIV FED RIO DE JANEIRO, LAB HIDROGENIO
dc.relationMateria-rio de Janeiro
dc.rightsCopyright UNIV FED RIO DE JANEIRO, LAB HIDROGENIO
dc.rightsclosedAccess
dc.subjectstress distribution
dc.subjectphotoelasticity
dc.subjectmini-implants
dc.subjectabsolute anchorage
dc.titleStress distribution in orthodontic mini-implants
dc.typeArtículos de revistas


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