dc.creator | DOBRANSZKI, A. | |
dc.creator | LEVY NETO, F. | |
dc.creator | DOBRANSZKI, N. C. | |
dc.creator | Vuolo, Jose Henrique | |
dc.creator | LABOISSIERE JR, M. A. | |
dc.date.accessioned | 2012-10-20T04:00:23Z | |
dc.date.accessioned | 2018-07-04T15:39:08Z | |
dc.date.available | 2012-10-20T04:00:23Z | |
dc.date.available | 2018-07-04T15:39:08Z | |
dc.date.created | 2012-10-20T04:00:23Z | |
dc.date.issued | 2010 | |
dc.identifier | MATERIA-RIO DE JANEIRO, v.15, n.3, p.405-412, 2010 | |
dc.identifier | 1517-7076 | |
dc.identifier | http://producao.usp.br/handle/BDPI/29044 | |
dc.identifier | http://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=EndNote&UT=000288248800003&Init=Yes&SrcAuth=ResearchSoft&mode=FullRecord | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1625686 | |
dc.description.abstract | The 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.language | por | |
dc.publisher | UNIV FED RIO DE JANEIRO, LAB HIDROGENIO | |
dc.relation | Materia-rio de Janeiro | |
dc.rights | Copyright UNIV FED RIO DE JANEIRO, LAB HIDROGENIO | |
dc.rights | closedAccess | |
dc.subject | stress distribution | |
dc.subject | photoelasticity | |
dc.subject | mini-implants | |
dc.subject | absolute anchorage | |
dc.title | Stress distribution in orthodontic mini-implants | |
dc.type | Artículos de revistas | |