Insertion torque versus mechanical resistance of mini- implants inserted in different cortical thickness

Detalhes bibliográficos
Autor(a) principal: Santos,Renata de Faria
Data de Publicação: 2014
Outros Autores: Ruellas,Antonio Carlos de Oliveira, Fernandes,Daniel Jogaib, Elias,Carlos Nelson
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Dental Press Journal of Orthodontics
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000300090
Resumo: OBJECTIVE: This study aimed to measure insertion torque, tip mechanical resistance to fracture and transmucosal neck of mini-implants (MI) (Conexão Sistemas de PróteseT), as well as to analyze surface morphology. METHODS: Mechanical tests were carried out to measure the insertion torque of MIs in different cortical thicknesses, and tip mechanical resistance to fracture as well as transmucosal neck of MIs. Surface morphology was assessed by scanning electron microscopy (SEM) before and after the mechanical tests. RESULTS: Values of mechanical resistance to fracture (22.14 N.cm and 54.95 N.cm) were higher and statistically different (P < 0.05) from values of insertion torque for 1-mm (7.60 N.cm) and 2-mm (13.27 N.cm) cortical thicknesses. Insertion torque was statistically similar (P > 0.05) to torsional fracture in the tip of MI (22.14 N.cm) when 3 mm cortical thickness (16.11 N.cm) and dense bone (23.95 N.cm) were used. Torsional fracture of the transmucosal neck (54.95 N.cm) was higher and statistically different (P < 0.05) from insertion torsional strength in all tested situations. SEM analysis showed that the MIs had the same smooth surface when received from the manufacturer and after the mechanical tests were performed. Additionally, no significant marks resulting from the manufacturing process were observed. CONCLUSION: All mini-implants tested presented adequate surface morphology. The resistance of mini-implants to fracture safely allows placement in 1 and 2-mm cortical thickness. However, in 3-mm cortical thickness and dense bones, pre-drilling with a bur is recommended before insertion.
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spelling Insertion torque versus mechanical resistance of mini- implants inserted in different cortical thicknessOrthodontic anchorage proceduresTorqueOrthodontics OBJECTIVE: This study aimed to measure insertion torque, tip mechanical resistance to fracture and transmucosal neck of mini-implants (MI) (Conexão Sistemas de PróteseT), as well as to analyze surface morphology. METHODS: Mechanical tests were carried out to measure the insertion torque of MIs in different cortical thicknesses, and tip mechanical resistance to fracture as well as transmucosal neck of MIs. Surface morphology was assessed by scanning electron microscopy (SEM) before and after the mechanical tests. RESULTS: Values of mechanical resistance to fracture (22.14 N.cm and 54.95 N.cm) were higher and statistically different (P < 0.05) from values of insertion torque for 1-mm (7.60 N.cm) and 2-mm (13.27 N.cm) cortical thicknesses. Insertion torque was statistically similar (P > 0.05) to torsional fracture in the tip of MI (22.14 N.cm) when 3 mm cortical thickness (16.11 N.cm) and dense bone (23.95 N.cm) were used. Torsional fracture of the transmucosal neck (54.95 N.cm) was higher and statistically different (P < 0.05) from insertion torsional strength in all tested situations. SEM analysis showed that the MIs had the same smooth surface when received from the manufacturer and after the mechanical tests were performed. Additionally, no significant marks resulting from the manufacturing process were observed. CONCLUSION: All mini-implants tested presented adequate surface morphology. The resistance of mini-implants to fracture safely allows placement in 1 and 2-mm cortical thickness. However, in 3-mm cortical thickness and dense bones, pre-drilling with a bur is recommended before insertion. Dental Press International2014-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000300090Dental Press Journal of Orthodontics v.19 n.3 2014reponame:Dental Press Journal of Orthodonticsinstname:Dental Press International (DPI)instacron:DPI10.1590/2176-9451.19.3.090-094.oarinfo:eu-repo/semantics/openAccessSantos,Renata de FariaRuellas,Antonio Carlos de OliveiraFernandes,Daniel JogaibElias,Carlos Nelsoneng2015-08-24T00:00:00Zoai:scielo:S2176-94512014000300090Revistahttp://www.scielo.br/dpjoONGhttps://old.scielo.br/oai/scielo-oai.phpartigos@dentalpress.com.br||davidnormando@hotmail.com2177-67092176-9451opendoar:2015-08-24T00:00Dental Press Journal of Orthodontics - Dental Press International (DPI)false
dc.title.none.fl_str_mv Insertion torque versus mechanical resistance of mini- implants inserted in different cortical thickness
title Insertion torque versus mechanical resistance of mini- implants inserted in different cortical thickness
spellingShingle Insertion torque versus mechanical resistance of mini- implants inserted in different cortical thickness
Santos,Renata de Faria
Orthodontic anchorage procedures
Torque
Orthodontics
title_short Insertion torque versus mechanical resistance of mini- implants inserted in different cortical thickness
title_full Insertion torque versus mechanical resistance of mini- implants inserted in different cortical thickness
title_fullStr Insertion torque versus mechanical resistance of mini- implants inserted in different cortical thickness
title_full_unstemmed Insertion torque versus mechanical resistance of mini- implants inserted in different cortical thickness
title_sort Insertion torque versus mechanical resistance of mini- implants inserted in different cortical thickness
author Santos,Renata de Faria
author_facet Santos,Renata de Faria
Ruellas,Antonio Carlos de Oliveira
Fernandes,Daniel Jogaib
Elias,Carlos Nelson
author_role author
author2 Ruellas,Antonio Carlos de Oliveira
Fernandes,Daniel Jogaib
Elias,Carlos Nelson
author2_role author
author
author
dc.contributor.author.fl_str_mv Santos,Renata de Faria
Ruellas,Antonio Carlos de Oliveira
Fernandes,Daniel Jogaib
Elias,Carlos Nelson
dc.subject.por.fl_str_mv Orthodontic anchorage procedures
Torque
Orthodontics
topic Orthodontic anchorage procedures
Torque
Orthodontics
description OBJECTIVE: This study aimed to measure insertion torque, tip mechanical resistance to fracture and transmucosal neck of mini-implants (MI) (Conexão Sistemas de PróteseT), as well as to analyze surface morphology. METHODS: Mechanical tests were carried out to measure the insertion torque of MIs in different cortical thicknesses, and tip mechanical resistance to fracture as well as transmucosal neck of MIs. Surface morphology was assessed by scanning electron microscopy (SEM) before and after the mechanical tests. RESULTS: Values of mechanical resistance to fracture (22.14 N.cm and 54.95 N.cm) were higher and statistically different (P < 0.05) from values of insertion torque for 1-mm (7.60 N.cm) and 2-mm (13.27 N.cm) cortical thicknesses. Insertion torque was statistically similar (P > 0.05) to torsional fracture in the tip of MI (22.14 N.cm) when 3 mm cortical thickness (16.11 N.cm) and dense bone (23.95 N.cm) were used. Torsional fracture of the transmucosal neck (54.95 N.cm) was higher and statistically different (P < 0.05) from insertion torsional strength in all tested situations. SEM analysis showed that the MIs had the same smooth surface when received from the manufacturer and after the mechanical tests were performed. Additionally, no significant marks resulting from the manufacturing process were observed. CONCLUSION: All mini-implants tested presented adequate surface morphology. The resistance of mini-implants to fracture safely allows placement in 1 and 2-mm cortical thickness. However, in 3-mm cortical thickness and dense bones, pre-drilling with a bur is recommended before insertion.
publishDate 2014
dc.date.none.fl_str_mv 2014-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000300090
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000300090
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/2176-9451.19.3.090-094.oar
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Dental Press International
publisher.none.fl_str_mv Dental Press International
dc.source.none.fl_str_mv Dental Press Journal of Orthodontics v.19 n.3 2014
reponame:Dental Press Journal of Orthodontics
instname:Dental Press International (DPI)
instacron:DPI
instname_str Dental Press International (DPI)
instacron_str DPI
institution DPI
reponame_str Dental Press Journal of Orthodontics
collection Dental Press Journal of Orthodontics
repository.name.fl_str_mv Dental Press Journal of Orthodontics - Dental Press International (DPI)
repository.mail.fl_str_mv artigos@dentalpress.com.br||davidnormando@hotmail.com
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