Correlation between vertical misfits and stresses transmited to implants from metal frameworks
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Publication Date: | 2011 |
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Language: | eng |
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Download full: | https://repositorio.ufrn.br/jspui/handle/123456789/23911 |
Summary: | An inappropriate prosthetic fit could cause stress over the interface implant/bone. The objective of this study was to compare stresses transmitted to implants from frameworks cast using different materials and to investigate a possible correlation between vertical misfits and these stresses. Fifteen one-piece cast frameworks simulating bars for fixed prosthesis in a model with five implants were fabricated and arranged into three different groups according to the material used for casting: CP Ti (commercially pure titanium), Co-Cr (cobalt-chromium) or Ni-Cr-Ti (nickel-chromium-titanium) alloys. Each framework was installed over the metal model with all screws tightened to a 10 N cm torque and then, vertical misfits were measured using an optical microscope. The stresses transmitted to implants were measured using quantitative photoelastic analysis in values of maximum shear stress (τ), when each framework was tightened to the photoelastic model to a 10 N cm standardized torque. Stress data were statistically analyzed using one-way ANOVA and Tukey's test and correlation tests were performed using Pearson's rank correlation (α = 0.05). Mean and standard deviation values of vertical misfit are presented for CP Ti (22.40 ± 9.05 μm), Co-Cr (66.41 ± 35.47 μm) and Ni-Cr-Ti (32.20 ± 24.47 μm). Stresses generated by Co-Cr alloy (τ = 7.70 ± 2.16 kPa) were significantly higher than those generated by CP Ti (τ = 5.86 ± 1.55 kPa, p = 0.018) and Ni-Cr-Ti alloy (τ = 5.74 ± 3.05 kPa, p = 0.011), which were similar (p = 0.982). Correlations between vertical misfits and stresses around the implants were not significant as for any evaluated materials. |
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Torres, Érica MirandaBarbosa, Gustavo Augusto SeabraBernardes, Sérgio RochaMattos, Maria da Gloria Chiarello deRibeiro, Ricardo Faria2017-09-15T14:41:25Z2017-09-15T14:41:25Z2011TORRES, Érica Miranda et al. Correlation between vertical misfits and stresses transmited to implants from metal frameworks. Journal of Biomechanics, v. 44, p. 1735-1739, 2011.https://repositorio.ufrn.br/jspui/handle/123456789/2391110.1016/j.jbiomech.2011.03.032engFixed implant prosthesisDental implantsMarginal misfitDental alloysPhotoelastic analysisCorrelation between vertical misfits and stresses transmited to implants from metal frameworksinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleAn inappropriate prosthetic fit could cause stress over the interface implant/bone. The objective of this study was to compare stresses transmitted to implants from frameworks cast using different materials and to investigate a possible correlation between vertical misfits and these stresses. Fifteen one-piece cast frameworks simulating bars for fixed prosthesis in a model with five implants were fabricated and arranged into three different groups according to the material used for casting: CP Ti (commercially pure titanium), Co-Cr (cobalt-chromium) or Ni-Cr-Ti (nickel-chromium-titanium) alloys. Each framework was installed over the metal model with all screws tightened to a 10 N cm torque and then, vertical misfits were measured using an optical microscope. The stresses transmitted to implants were measured using quantitative photoelastic analysis in values of maximum shear stress (τ), when each framework was tightened to the photoelastic model to a 10 N cm standardized torque. Stress data were statistically analyzed using one-way ANOVA and Tukey's test and correlation tests were performed using Pearson's rank correlation (α = 0.05). Mean and standard deviation values of vertical misfit are presented for CP Ti (22.40 ± 9.05 μm), Co-Cr (66.41 ± 35.47 μm) and Ni-Cr-Ti (32.20 ± 24.47 μm). Stresses generated by Co-Cr alloy (τ = 7.70 ± 2.16 kPa) were significantly higher than those generated by CP Ti (τ = 5.86 ± 1.55 kPa, p = 0.018) and Ni-Cr-Ti alloy (τ = 5.74 ± 3.05 kPa, p = 0.011), which were similar (p = 0.982). Correlations between vertical misfits and stresses around the implants were not significant as for any evaluated materials.info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALCorrelationBetweenVertical_Torres_2011.pdfCorrelationBetweenVertical_Torres_2011.pdfhttps://www.ncbi.nlm.nih.gov/pubmed/21497352application/pdf684114https://repositorio.ufrn.br/bitstream/123456789/23911/1/CorrelationBetweenVertical_Torres_2011.pdf414380264f485406b3a43fc11846ce7fMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://repositorio.ufrn.br/bitstream/123456789/23911/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52TEXTCorrelation between vertical misfits and stresses transmitted_2011.pdf.txtCorrelation between vertical misfits and stresses transmitted_2011.pdf.txtExtracted texttext/plain29691https://repositorio.ufrn.br/bitstream/123456789/23911/5/Correlation%20between%20vertical%20misfits%20and%20stresses%20transmitted_2011.pdf.txt74b63936be562c343793663ed621a16bMD55THUMBNAILCorrelation between vertical misfits and stresses transmitted_2011.pdf.jpgCorrelation between vertical misfits and stresses transmitted_2011.pdf.jpgIM Thumbnailimage/jpeg8708https://repositorio.ufrn.br/bitstream/123456789/23911/6/Correlation%20between%20vertical%20misfits%20and%20stresses%20transmitted_2011.pdf.jpgafc1f6edf7a4f54d470e3992c99649faMD56123456789/239112021-12-07 11:33:27.06oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-12-07T14:33:27Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Correlation between vertical misfits and stresses transmited to implants from metal frameworks |
title |
Correlation between vertical misfits and stresses transmited to implants from metal frameworks |
spellingShingle |
Correlation between vertical misfits and stresses transmited to implants from metal frameworks Torres, Érica Miranda Fixed implant prosthesis Dental implants Marginal misfit Dental alloys Photoelastic analysis |
title_short |
Correlation between vertical misfits and stresses transmited to implants from metal frameworks |
title_full |
Correlation between vertical misfits and stresses transmited to implants from metal frameworks |
title_fullStr |
Correlation between vertical misfits and stresses transmited to implants from metal frameworks |
title_full_unstemmed |
Correlation between vertical misfits and stresses transmited to implants from metal frameworks |
title_sort |
Correlation between vertical misfits and stresses transmited to implants from metal frameworks |
author |
Torres, Érica Miranda |
author_facet |
Torres, Érica Miranda Barbosa, Gustavo Augusto Seabra Bernardes, Sérgio Rocha Mattos, Maria da Gloria Chiarello de Ribeiro, Ricardo Faria |
author_role |
author |
author2 |
Barbosa, Gustavo Augusto Seabra Bernardes, Sérgio Rocha Mattos, Maria da Gloria Chiarello de Ribeiro, Ricardo Faria |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Torres, Érica Miranda Barbosa, Gustavo Augusto Seabra Bernardes, Sérgio Rocha Mattos, Maria da Gloria Chiarello de Ribeiro, Ricardo Faria |
dc.subject.por.fl_str_mv |
Fixed implant prosthesis Dental implants Marginal misfit Dental alloys Photoelastic analysis |
topic |
Fixed implant prosthesis Dental implants Marginal misfit Dental alloys Photoelastic analysis |
description |
An inappropriate prosthetic fit could cause stress over the interface implant/bone. The objective of this study was to compare stresses transmitted to implants from frameworks cast using different materials and to investigate a possible correlation between vertical misfits and these stresses. Fifteen one-piece cast frameworks simulating bars for fixed prosthesis in a model with five implants were fabricated and arranged into three different groups according to the material used for casting: CP Ti (commercially pure titanium), Co-Cr (cobalt-chromium) or Ni-Cr-Ti (nickel-chromium-titanium) alloys. Each framework was installed over the metal model with all screws tightened to a 10 N cm torque and then, vertical misfits were measured using an optical microscope. The stresses transmitted to implants were measured using quantitative photoelastic analysis in values of maximum shear stress (τ), when each framework was tightened to the photoelastic model to a 10 N cm standardized torque. Stress data were statistically analyzed using one-way ANOVA and Tukey's test and correlation tests were performed using Pearson's rank correlation (α = 0.05). Mean and standard deviation values of vertical misfit are presented for CP Ti (22.40 ± 9.05 μm), Co-Cr (66.41 ± 35.47 μm) and Ni-Cr-Ti (32.20 ± 24.47 μm). Stresses generated by Co-Cr alloy (τ = 7.70 ± 2.16 kPa) were significantly higher than those generated by CP Ti (τ = 5.86 ± 1.55 kPa, p = 0.018) and Ni-Cr-Ti alloy (τ = 5.74 ± 3.05 kPa, p = 0.011), which were similar (p = 0.982). Correlations between vertical misfits and stresses around the implants were not significant as for any evaluated materials. |
publishDate |
2011 |
dc.date.issued.fl_str_mv |
2011 |
dc.date.accessioned.fl_str_mv |
2017-09-15T14:41:25Z |
dc.date.available.fl_str_mv |
2017-09-15T14:41:25Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
TORRES, Érica Miranda et al. Correlation between vertical misfits and stresses transmited to implants from metal frameworks. Journal of Biomechanics, v. 44, p. 1735-1739, 2011. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/23911 |
dc.identifier.doi.none.fl_str_mv |
10.1016/j.jbiomech.2011.03.032 |
identifier_str_mv |
TORRES, Érica Miranda et al. Correlation between vertical misfits and stresses transmited to implants from metal frameworks. Journal of Biomechanics, v. 44, p. 1735-1739, 2011. 10.1016/j.jbiomech.2011.03.032 |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/23911 |
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eng |
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eng |
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info:eu-repo/semantics/openAccess |
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Repositório Institucional da UFRN |
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