INFLUENCE OF DIFFERENT CANTILEVER EXTENSIONS AND GLASS OR POLYARAMID REINFORCEMENT FIBERS ON FRACTURE STRENGTH OF IMPLANT-SUPPORTED TEMPORARY FIXED PROSTHESIS
Identifieur interne : 002F98 ( Pmc/Curation ); précédent : 002F97; suivant : 002F99INFLUENCE OF DIFFERENT CANTILEVER EXTENSIONS AND GLASS OR POLYARAMID REINFORCEMENT FIBERS ON FRACTURE STRENGTH OF IMPLANT-SUPPORTED TEMPORARY FIXED PROSTHESIS
Auteurs : Paola Colán Guzmán [Brésil] ; Fernando Furtado Antunes De Freitas [Brésil] ; Paulo Martins Ferreira [Brésil] ; César Antunes De Freitas [Brésil] ; Kátia Rodrigues Reis [Brésil]Source :
- Journal of Applied Oral Science [ 1678-7757 ] ; 2008.
Abstract
In long-term oral rehabilitation treatments, resistance of provisional crowns is a very important factor, especially in cases of an extensive edentulous distal space. The aim of this laboratorial study was to evaluate an acrylic resin cantilever-type prosthesis regarding the flexural strength of its in-balance portion as a function of its extension variation and reinforcement by two types of fibers (glass and polyaramid), considering that literature is not conclusive on this subject. Each specimen was composed by 3 total crowns at its mesial portion, each one attached to an implant component (abutment), while the distal portion (cantilever) had two crowns. Each specimen was constructed by injecting acrylic resin into a two-part silicone matrix placed on a metallic base. In each specimen, the crowns were fabricated with either acrylic resin (control group) or acrylic resin reinforced by glass (Fibrante, Angelus) or polyaramide (Kevlar 49, Du Pont) fibers. Compression load was applied on the cantilever, in a point located 7, 14 or 21 mm from the distal surface of the nearest crown with abutment, to simulate different extensions. The specimen was fixed on the metallic base and the force was applied until fracture in a universal test machine. Each one of the 9 sub-groups was composed by 10 specimens. Flexural strength means (in kgf) for the distances of 7, 14 and 21 mm were, respectively, 28.07, 8.27 and 6.39 for control group, 31.89, 9.18 and 5.16 for Kevlar 49 and 30.90, 9.31 and 6.86 for Fibrante. Data analysis ANOVA showed statistically significant difference (p<0.05) only regarding cantilever extension. Tukey's test detected significantly higher flexural strength for the 7 mm-distance, followed by 14 and 21 mm. Fracture was complete only on specimens of non-reinforced groups.
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DOI: 10.1590/S1678-77572008000200006
PubMed: 19089201
PubMed Central: 4327629
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">INFLUENCE OF DIFFERENT CANTILEVER EXTENSIONS AND GLASS OR POLYARAMID REINFORCEMENT FIBERS ON FRACTURE STRENGTH OF IMPLANT-SUPPORTED TEMPORARY FIXED PROSTHESIS</title><author><name sortKey="Colan Guzman, Paola" sort="Colan Guzman, Paola" uniqKey="Colan Guzman P" first="Paola" last="Colán Guzmán">Paola Colán Guzmán</name><affiliation wicri:level="1"><nlm:aff id="aff01">DDS, MSc, Graduate student, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, Graduate student, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP</wicri:regionArea></affiliation></author><author><name sortKey="De Freitas, Fernando Furtado Antunes" sort="De Freitas, Fernando Furtado Antunes" uniqKey="De Freitas F" first="Fernando Furtado Antunes" last="De Freitas">Fernando Furtado Antunes De Freitas</name><affiliation wicri:level="1"><nlm:aff id="aff01">DDS, MSc, Graduate student, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, Graduate student, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP</wicri:regionArea></affiliation></author><author><name sortKey="Ferreira, Paulo Martins" sort="Ferreira, Paulo Martins" uniqKey="Ferreira P" first="Paulo Martins" last="Ferreira">Paulo Martins Ferreira</name><affiliation wicri:level="1"><nlm:aff id="aff02">DDS, MSc, PhD, Associate Professor, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, PhD, Associate Professor, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, 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DIFFERENT CANTILEVER EXTENSIONS AND GLASS OR POLYARAMID REINFORCEMENT FIBERS ON FRACTURE STRENGTH OF IMPLANT-SUPPORTED TEMPORARY FIXED PROSTHESIS</title><author><name sortKey="Colan Guzman, Paola" sort="Colan Guzman, Paola" uniqKey="Colan Guzman P" first="Paola" last="Colán Guzmán">Paola Colán Guzmán</name><affiliation wicri:level="1"><nlm:aff id="aff01">DDS, MSc, Graduate student, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, Graduate student, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP</wicri:regionArea></affiliation></author><author><name sortKey="De Freitas, Fernando Furtado Antunes" sort="De Freitas, Fernando Furtado Antunes" uniqKey="De Freitas F" first="Fernando Furtado Antunes" last="De Freitas">Fernando Furtado Antunes De Freitas</name><affiliation wicri:level="1"><nlm:aff id="aff01">DDS, MSc, Graduate student, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, Graduate student, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP</wicri:regionArea></affiliation></author><author><name sortKey="Ferreira, Paulo Martins" sort="Ferreira, Paulo Martins" uniqKey="Ferreira P" first="Paulo Martins" last="Ferreira">Paulo Martins Ferreira</name><affiliation wicri:level="1"><nlm:aff id="aff02">DDS, MSc, PhD, Associate Professor, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, PhD, Associate Professor, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP</wicri:regionArea></affiliation></author><author><name sortKey="De Freitas, Cesar Antunes" sort="De Freitas, Cesar 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xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, Graduate student, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP</wicri:regionArea></affiliation></author></analytic><series><title level="j">Journal of Applied Oral Science</title><idno type="ISSN">1678-7757</idno><idno type="eISSN">1678-7765</idno><imprint><date when="2008">2008</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>In long-term oral rehabilitation treatments, resistance of provisional crowns is a very important factor, especially in cases of an extensive edentulous distal space. The aim of this laboratorial study was to evaluate an acrylic resin cantilever-type prosthesis regarding the flexural strength of its in-balance portion as a function of its extension variation and reinforcement by two types of fibers (glass and polyaramid), considering that literature is not conclusive on this subject. Each specimen was composed by 3 total crowns at its mesial portion, each one attached to an implant component (abutment), while the distal portion (cantilever) had two crowns. Each specimen was constructed by injecting acrylic resin into a two-part silicone matrix placed on a metallic base. In each specimen, the crowns were fabricated with either acrylic resin (control group) or acrylic resin reinforced by glass (Fibrante, Angelus) or polyaramide (Kevlar 49, Du Pont) fibers. Compression load was applied on the cantilever, in a point located 7, 14 or 21 mm from the distal surface of the nearest crown with abutment, to simulate different extensions. The specimen was fixed on the metallic base and the force was applied until fracture in a universal test machine. Each one of the 9 sub-groups was composed by 10 specimens. Flexural strength means (in kgf) for the distances of 7, 14 and 21 mm were, respectively, 28.07, 8.27 and 6.39 for control group, 31.89, 9.18 and 5.16 for Kevlar 49 and 30.90, 9.31 and 6.86 for Fibrante. Data analysis ANOVA showed statistically significant difference (p<0.05) only regarding cantilever extension. Tukey's test detected significantly higher flexural strength for the 7 mm-distance, followed by 14 and 21 mm. Fracture was complete only on specimens of non-reinforced groups.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Berrong, Jm" uniqKey="Berrong J">JM Berrong</name></author><author><name sortKey="Weed, Rm" uniqKey="Weed R">RM Weed</name></author><author><name sortKey="Young, Jm" uniqKey="Young J">JM Young</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Grant, Aa" uniqKey="Grant A">AA Grant</name></author><author><name sortKey="Greener, Eh" uniqKey="Greener E">EH Greener</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Hamza, Ta" uniqKey="Hamza T">TA Hamza</name></author><author><name sortKey="Rosenstiel, Sf" uniqKey="Rosenstiel S">SF Rosenstiel</name></author><author><name sortKey="Elhosary, Mm" uniqKey="Elhosary M">MM Elhosary</name></author><author><name sortKey="Ibraheem, R" uniqKey="Ibraheem R">R 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Shah</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Keyf, F" uniqKey="Keyf F">F Keyf</name></author><author><name sortKey="Uzun, G" uniqKey="Uzun G">G Uzun</name></author><author><name sortKey="Mutlu, M" uniqKey="Mutlu M">M Mutlu</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kim, Sh" uniqKey="Kim S">SH Kim</name></author><author><name sortKey="Watts, Dc" uniqKey="Watts D">DC Watts</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Narva, Kk" uniqKey="Narva K">KK Narva</name></author><author><name sortKey="Lassila, Lv" uniqKey="Lassila L">LV Lassila</name></author><author><name sortKey="Vallittu, Pk" uniqKey="Vallittu P">PK Vallittu</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Nohrstrom, Tj" uniqKey="Nohrstrom T">TJ Nohrström</name></author><author><name sortKey="Vallittu, Pk" uniqKey="Vallittu P">PK Vallittu</name></author><author><name 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G" uniqKey="Uzun G">G Uzun</name></author><author><name sortKey="Hersek, N" uniqKey="Hersek N">N Hersek</name></author><author><name sortKey="Tincer, T" uniqKey="Tincer T">T Tinçer</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Vallittu, Pk" uniqKey="Vallittu P">PK Vallittu</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Vallittu, Pk" uniqKey="Vallittu P">PK Vallittu</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Vallittu, Pk" uniqKey="Vallittu P">PK Vallittu</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Vallittu, Pk" uniqKey="Vallittu P">PK Vallittu</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Vallittu, Pk" uniqKey="Vallittu P">PK Vallittu</name></author><author><name sortKey="Lassila, Vp" uniqKey="Lassila V">VP Lassila</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Vallittu, Pk" uniqKey="Vallittu P">PK Vallittu</name></author><author><name sortKey="Lassila, Vp" uniqKey="Lassila V">VP Lassila</name></author><author><name sortKey="Lappalainen, R" uniqKey="Lappalainen R">R Lappalainen</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Vallittu, Pk" uniqKey="Vallittu P">PK Vallittu</name></author><author><name sortKey="Ruyter, Ie" uniqKey="Ruyter I">IE Ruyter</name></author><author><name sortKey="Ekstrand, K" uniqKey="Ekstrand K">K Ekstrand</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Van Zyl, Pp" uniqKey="Van Zyl P">PP Van Zyl</name></author><author><name sortKey="Grundling, Nl" uniqKey="Grundling N">NL Grundling</name></author><author><name sortKey="Jooste, Ch" uniqKey="Jooste C">CH Jooste</name></author><author><name sortKey="Terblanche, E" uniqKey="Terblanche E">E Terblanche</name></author></analytic></biblStruct></listBibl></div1></back></TEI><pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Appl Oral Sci</journal-id><journal-id journal-id-type="iso-abbrev">J Appl Oral Sci</journal-id><journal-title-group><journal-title>Journal of Applied Oral Science</journal-title></journal-title-group><issn pub-type="ppub">1678-7757</issn><issn pub-type="epub">1678-7765</issn><publisher><publisher-name>Faculdade de Odontologia de Bauru da Universidade de São Paulo</publisher-name><publisher-loc>Bauru</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">19089201</article-id><article-id pub-id-type="pmc">4327629</article-id><article-id pub-id-type="publisher-id">S1678-77572008000200006</article-id><article-id pub-id-type="doi">10.1590/S1678-77572008000200006</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>INFLUENCE OF DIFFERENT CANTILEVER EXTENSIONS AND GLASS OR POLYARAMID REINFORCEMENT FIBERS ON FRACTURE STRENGTH OF IMPLANT-SUPPORTED TEMPORARY FIXED PROSTHESIS</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Colán Guzmán</surname><given-names>Paola</given-names></name><xref ref-type="aff" rid="aff01"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>de Freitas</surname><given-names>Fernando Furtado Antunes</given-names></name><xref ref-type="aff" rid="aff01"><sup>1</sup></xref><xref ref-type="corresp" rid="c01"></xref></contrib><contrib contrib-type="author"><name><surname>Ferreira</surname><given-names>Paulo Martins</given-names></name><xref ref-type="aff" rid="aff02"><sup>2</sup></xref></contrib><contrib contrib-type="author"><name><surname>de Freitas</surname><given-names>César Antunes</given-names></name><xref ref-type="aff" rid="aff03"><sup>3</sup></xref></contrib><contrib contrib-type="author"><name><surname>Reis</surname><given-names>Kátia Rodrigues</given-names></name><xref ref-type="aff" rid="aff01"><sup>1</sup></xref></contrib><aff id="aff01"><label>1</label>DDS, MSc, Graduate student, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil</aff><aff id="aff02"><label>2</label>DDS, MSc, PhD, Associate Professor, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil</aff><aff id="aff03"><label>3</label>DDS, MSc, PhD, Assistant Professor, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil</aff></contrib-group><author-notes><corresp id="c01"><bold>Corresponding address:</bold> Fernando Furtado Antunes de Freitas - Rua Rubens Arruda, n° 18-59, Bairro Estoril, 17016-040, Bauru, SP, Brasil. Phone: 55-14-3011-0561/ 3223-2282 - e-mail: <email>ffa_freitas@yahoo.com.br</email></corresp></author-notes><pub-date pub-type="epub-ppub"><month>4</month><year>2008</year></pub-date><pmc-comment>Fake ppub date generated by PMC from publisher
pub-date/@pub-type='epub-ppub' </pmc-comment>
<pub-date pub-type="ppub"><month>4</month><year>2008</year></pub-date><volume>16</volume><issue>2</issue><fpage>111</fpage><lpage>115</lpage><history><date date-type="received"><day>02</day><month>4</month><year>2007</year></date><date date-type="rev-recd"><day>17</day><month>10</month><year>2007</year></date><date date-type="accepted"><day>12</day><month>12</month><year>2007</year></date></history><permissions><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/"><license-p>This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p></license></permissions><abstract><p>In long-term oral rehabilitation treatments, resistance of provisional crowns is a very important factor, especially in cases of an extensive edentulous distal space. The aim of this laboratorial study was to evaluate an acrylic resin cantilever-type prosthesis regarding the flexural strength of its in-balance portion as a function of its extension variation and reinforcement by two types of fibers (glass and polyaramid), considering that literature is not conclusive on this subject. Each specimen was composed by 3 total crowns at its mesial portion, each one attached to an implant component (abutment), while the distal portion (cantilever) had two crowns. Each specimen was constructed by injecting acrylic resin into a two-part silicone matrix placed on a metallic base. In each specimen, the crowns were fabricated with either acrylic resin (control group) or acrylic resin reinforced by glass (Fibrante, Angelus) or polyaramide (Kevlar 49, Du Pont) fibers. Compression load was applied on the cantilever, in a point located 7, 14 or 21 mm from the distal surface of the nearest crown with abutment, to simulate different extensions. The specimen was fixed on the metallic base and the force was applied until fracture in a universal test machine. Each one of the 9 sub-groups was composed by 10 specimens. Flexural strength means (in kgf) for the distances of 7, 14 and 21 mm were, respectively, 28.07, 8.27 and 6.39 for control group, 31.89, 9.18 and 5.16 for Kevlar 49 and 30.90, 9.31 and 6.86 for Fibrante. Data analysis ANOVA showed statistically significant difference (p<0.05) only regarding cantilever extension. Tukey's test detected significantly higher flexural strength for the 7 mm-distance, followed by 14 and 21 mm. Fracture was complete only on specimens of non-reinforced groups.</p></abstract><kwd-group><kwd>Acrylic resins</kwd><kwd>Glass fiber</kwd><kwd>Polyaramide</kwd><kwd>Temporary dental restoration</kwd><kwd>Provisional prosthesis</kwd><kwd>Cantilever</kwd><kwd>Flexural strength</kwd></kwd-group><counts><fig-count count="6"></fig-count><table-count count="1"></table-count><equation-count count="0"></equation-count><ref-count count="22"></ref-count><page-count count="5"></page-count></counts></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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