Insertion torque versus mechanical resistance of mini-implants inserted in different cortical thickness
Identifieur interne : 001962 ( Main/Exploration ); précédent : 001961; suivant : 001963Insertion torque versus mechanical resistance of mini-implants inserted in different cortical thickness
Auteurs : Renata De Faria Santos ; Antonio Carlos De Oliveira Ruellas ; Daniel Jogaib Fernandes ; Carlos Nelson EliasSource :
- Dental Press Journal of Orthodontics [ 2176-9451 ] ; 2014.
Abstract
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.
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.
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.
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.
Url:
DOI: 10.1590/2176-9451.19.3.090-094.oar
PubMed: 25162571
PubMed Central: 4296615
Affiliations:
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Insertion torque <italic>versus</italic> mechanical resistance of
mini-implants inserted in different cortical thickness</title><author><name sortKey="Santos, Renata De Faria" sort="Santos, Renata De Faria" uniqKey="Santos R" first="Renata De Faria" last="Santos">Renata De Faria Santos</name><affiliation><nlm:aff id="aff01"> Masters student of Orthodontics, Federal University of Rio de Janeiro, UFRJ.</nlm:aff><wicri:noCountry code="subfield">UFRJ.</wicri:noCountry></affiliation></author><author><name sortKey="Ruellas, Antonio Carlos De Oliveira" sort="Ruellas, Antonio Carlos De Oliveira" uniqKey="Ruellas A" first="Antonio Carlos De Oliveira" last="Ruellas">Antonio Carlos De Oliveira Ruellas</name><affiliation><nlm:aff id="aff02"> Associate professor, Federal University of Rio de Janeiro, UFRJ.</nlm:aff><wicri:noCountry code="subfield">UFRJ.</wicri:noCountry></affiliation></author><author><name sortKey="Fernandes, Daniel Jogaib" sort="Fernandes, Daniel Jogaib" uniqKey="Fernandes D" first="Daniel Jogaib" last="Fernandes">Daniel Jogaib Fernandes</name><affiliation><nlm:aff id="aff03"> PhD resident in Material Science, Military Institute of Engineering.</nlm:aff><wicri:noCountry code="subfield">Military Institute of Engineering.</wicri:noCountry></affiliation></author><author><name sortKey="Elias, Carlos Nelson" sort="Elias, Carlos Nelson" uniqKey="Elias C" first="Carlos Nelson" last="Elias">Carlos Nelson Elias</name><affiliation><nlm:aff id="aff04"> Adjunct professor, Military Institute of Engineering.</nlm:aff><wicri:noCountry code="subfield">Military Institute of Engineering.</wicri:noCountry></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">25162571</idno><idno type="pmc">4296615</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4296615</idno><idno type="RBID">PMC:4296615</idno><idno type="doi">10.1590/2176-9451.19.3.090-094.oar</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">002C11</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002C11</idno><idno type="wicri:Area/Pmc/Curation">002C11</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">002C11</idno><idno type="wicri:Area/Pmc/Checkpoint">001393</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">001393</idno><idno type="wicri:Area/Ncbi/Merge">005392</idno><idno type="wicri:Area/Ncbi/Curation">005392</idno><idno type="wicri:Area/Ncbi/Checkpoint">005392</idno><idno type="wicri:Area/Main/Merge">001968</idno><idno type="wicri:Area/Main/Curation">001962</idno><idno type="wicri:Area/Main/Exploration">001962</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Insertion torque <italic>versus</italic> mechanical resistance of
mini-implants inserted in different cortical thickness</title><author><name sortKey="Santos, Renata De Faria" sort="Santos, Renata De Faria" uniqKey="Santos R" first="Renata De Faria" last="Santos">Renata De Faria Santos</name><affiliation><nlm:aff id="aff01"> Masters student of Orthodontics, Federal University of Rio de Janeiro, UFRJ.</nlm:aff><wicri:noCountry code="subfield">UFRJ.</wicri:noCountry></affiliation></author><author><name sortKey="Ruellas, Antonio Carlos De Oliveira" sort="Ruellas, Antonio Carlos De Oliveira" uniqKey="Ruellas A" first="Antonio Carlos De Oliveira" last="Ruellas">Antonio Carlos De Oliveira Ruellas</name><affiliation><nlm:aff id="aff02"> Associate professor, Federal University of Rio de Janeiro, UFRJ.</nlm:aff><wicri:noCountry code="subfield">UFRJ.</wicri:noCountry></affiliation></author><author><name sortKey="Fernandes, Daniel Jogaib" sort="Fernandes, Daniel Jogaib" uniqKey="Fernandes D" first="Daniel Jogaib" last="Fernandes">Daniel Jogaib Fernandes</name><affiliation><nlm:aff id="aff03"> PhD resident in Material Science, Military Institute of Engineering.</nlm:aff><wicri:noCountry code="subfield">Military Institute of Engineering.</wicri:noCountry></affiliation></author><author><name sortKey="Elias, Carlos Nelson" sort="Elias, Carlos Nelson" uniqKey="Elias C" first="Carlos Nelson" last="Elias">Carlos Nelson Elias</name><affiliation><nlm:aff id="aff04"> Adjunct professor, Military Institute of Engineering.</nlm:aff><wicri:noCountry code="subfield">Military Institute of Engineering.</wicri:noCountry></affiliation></author></analytic><series><title level="j">Dental Press Journal of Orthodontics</title><idno type="ISSN">2176-9451</idno><idno type="eISSN">2177-6709</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Objective</title><p>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.</p></sec><sec><title>Methods</title><p>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.</p></sec><sec><title>Results</title><p>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.</p></sec><sec><title>Conclusion</title><p>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.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Papadopoulos, Ma" uniqKey="Papadopoulos M">MA Papadopoulos</name></author><author><name sortKey="Tarawneh, F" uniqKey="Tarawneh F">F Tarawneh</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Barlow, M" uniqKey="Barlow M">M Barlow</name></author><author><name sortKey="Kula, K" uniqKey="Kula K">K Kula</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Buschang, Ph" uniqKey="Buschang P">PH Buschang</name></author><author><name sortKey="Carrillo, R" uniqKey="Carrillo R">R Carrillo</name></author><author><name sortKey="Ozenbaugh, B" uniqKey="Ozenbaugh B">B Ozenbaugh</name></author><author><name sortKey="Rossouw, Pe" uniqKey="Rossouw P">PE Rossouw</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Chen, Ch" uniqKey="Chen C">CH Chen</name></author><author><name sortKey="Chang, Cs" uniqKey="Chang C">CS Chang</name></author><author><name sortKey="Hsieh, Ch" uniqKey="Hsieh C">CH Hsieh</name></author><author><name sortKey="Tseng, Yc" uniqKey="Tseng Y">YC Tseng</name></author><author><name sortKey="Shen, Ys" uniqKey="Shen Y">YS Shen</name></author><author><name sortKey="Huang, Iy" uniqKey="Huang I">IY Huang</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Moon, Ch" uniqKey="Moon C">CH Moon</name></author><author><name sortKey="Lee, Dg" uniqKey="Lee D">DG Lee</name></author><author><name sortKey="Lee, Hs" uniqKey="Lee H">HS Lee</name></author><author><name sortKey="Im, Js" uniqKey="Im J">JS Im</name></author><author><name sortKey="Baek, Sh" uniqKey="Baek S">SH Baek</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Park, Hs" uniqKey="Park H">HS Park</name></author><author><name sortKey="Jeong, Sh" uniqKey="Jeong S">SH Jeong</name></author><author><name sortKey="Kwon, Ow" uniqKey="Kwon O">OW Kwon</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Wiechmann, D" uniqKey="Wiechmann D">D Wiechmann</name></author><author><name sortKey="Meyer, U" uniqKey="Meyer U">U Meyer</name></author><author><name sortKey="Buchter, A" uniqKey="Buchter A">A Buchter</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Reynders, R" uniqKey="Reynders R">R Reynders</name></author><author><name sortKey="Ronchi, L" uniqKey="Ronchi L">L Ronchi</name></author><author><name sortKey="Bipat, S" uniqKey="Bipat S">S Bipat</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Ruellas, Aco" uniqKey="Ruellas A">ACO Ruellas</name></author><author><name sortKey="Mattos, Ct" uniqKey="Mattos C">CT Mattos</name></author><author><name sortKey="Elias, Cn" uniqKey="Elias C">CN 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S">S Koerdt</name></author><author><name sortKey="Wiesmann, H" uniqKey="Wiesmann H">H Wiesmann</name></author><author><name sortKey="Pifko, J" uniqKey="Pifko J">J Pifko</name></author><author><name sortKey="Meyer, U" uniqKey="Meyer U">U Meyer</name></author></analytic></biblStruct></listBibl></div1></back></TEI><affiliations><list></list><tree><noCountry><name sortKey="Elias, Carlos Nelson" sort="Elias, Carlos Nelson" uniqKey="Elias C" first="Carlos Nelson" last="Elias">Carlos Nelson Elias</name><name sortKey="Fernandes, Daniel Jogaib" sort="Fernandes, Daniel Jogaib" uniqKey="Fernandes D" first="Daniel Jogaib" last="Fernandes">Daniel Jogaib Fernandes</name><name sortKey="Ruellas, Antonio Carlos De Oliveira" sort="Ruellas, Antonio Carlos De Oliveira" uniqKey="Ruellas A" first="Antonio Carlos De Oliveira" last="Ruellas">Antonio Carlos De Oliveira Ruellas</name><name sortKey="Santos, Renata De Faria" sort="Santos, Renata De Faria" uniqKey="Santos R" first="Renata De Faria" last="Santos">Renata De Faria Santos</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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