Correlation between vertical misfits and stresses transmited to implants from metal frameworks

Bibliographic Details
Main Author: Torres, Érica Miranda
Publication Date: 2011
Other Authors: Barbosa, Gustavo Augusto Seabra, Bernardes, Sérgio Rocha, Mattos, Maria da Gloria Chiarello de, Ribeiro, Ricardo Faria
Format: Article
Language: eng
Source: Repositório Institucional da UFRN
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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spelling 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
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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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