FRACTURE OF ABUTMENT SCREW SUPPORTING A CEMENTED IMPLANT-RETAINED PROSTHESIS WITH EXTERNAL HEXAGON CONNECTION: A CASE REPORT WITH SEM EVALUATION
Identifieur interne : 002522 ( Ncbi/Merge ); précédent : 002521; suivant : 002523FRACTURE OF ABUTMENT SCREW SUPPORTING A CEMENTED IMPLANT-RETAINED PROSTHESIS WITH EXTERNAL HEXAGON CONNECTION: A CASE REPORT WITH SEM EVALUATION
Auteurs : Mariana Diniz Bisi Santos [Brésil] ; Arthur Braga Pfeifer [Brésil] ; Marcos Rogério Pupo Silva [Brésil] ; Claudio Luiz Sendyk [Brésil] ; Wilson Roberto Sendyk [Brésil]Source :
- Journal of Applied Oral Science [ 1678-7757 ] ; 2007.
Abstract
One of the causes of implant failures in cemented implant-retained prostheses is the fracture of abutment screw or UCLA abutment. This article reports a case of simultaneous fracture of two UCLA abutments screws occurring in an implant-supported prosthesis placed in the mandibular molar region. The fractured structures were examined under scanning electron microscopy to investigate the probable causes of the failure, which were not related to failures on materials or fabrication of the screws, but rather were due to shear forces. The misfit in cemented prostheses may be the most likely cause of shear force generation.
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DOI: 10.1590/S1678-77572007000200015
PubMed: 19089120
PubMed Central: 4327248
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Amaro, São Paulo, São Paulo</wicri:regionArea><placeName><settlement type="city">São Paulo</settlement><region type="state">État de São Paulo</region></placeName></affiliation></author><author><name sortKey="Sendyk, Claudio Luiz" sort="Sendyk, Claudio Luiz" uniqKey="Sendyk C" first="Claudio Luiz" last="Sendyk">Claudio Luiz Sendyk</name><affiliation wicri:level="4"><nlm:aff id="aff02">DDS, MSc, PhD, Associate Professor, Department of Prosthodontics, University of São Paulo, São Paulo, São Paulo, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, PhD, Associate Professor, Department of Prosthodontics, University of São Paulo, São Paulo, São Paulo</wicri:regionArea><placeName><settlement type="city">São Paulo</settlement><region type="state">État de São Paulo</region><settlement type="city">São Paulo</settlement></placeName><orgName type="university">Université de São Paulo</orgName></affiliation></author><author><name sortKey="Sendyk, Wilson Roberto" sort="Sendyk, Wilson Roberto" uniqKey="Sendyk W" first="Wilson Roberto" last="Sendyk">Wilson Roberto Sendyk</name><affiliation wicri:level="3"><nlm:aff id="aff03">DDS, MSc, PhD, Associate Professor, Department of Implantology, University Santo Amaro, São Paulo, São Paulo, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, PhD, Associate Professor, Department of Implantology, University Santo Amaro, São Paulo, São Paulo</wicri:regionArea><placeName><settlement type="city">São Paulo</settlement><region type="state">État de São Paulo</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">19089120</idno><idno type="pmc">4327248</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327248</idno><idno type="RBID">PMC:4327248</idno><idno type="doi">10.1590/S1678-77572007000200015</idno><date when="2007">2007</date><idno type="wicri:Area/Pmc/Corpus">002F95</idno><idno 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Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MsC, Graduate student, Department of Implantology, University Santo Amaro, São Paulo, São Paulo</wicri:regionArea><placeName><settlement type="city">São Paulo</settlement><region type="state">État de São Paulo</region></placeName></affiliation></author><author><name sortKey="Pfeifer, Arthur Braga" sort="Pfeifer, Arthur Braga" uniqKey="Pfeifer A" first="Arthur Braga" last="Pfeifer">Arthur Braga Pfeifer</name><affiliation wicri:level="3"><nlm:aff id="aff01">DDS, MsC, Graduate student, Department of Implantology, University Santo Amaro, São Paulo, São Paulo, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MsC, Graduate student, Department of Implantology, University Santo Amaro, São Paulo, São Paulo</wicri:regionArea><placeName><settlement type="city">São Paulo</settlement><region type="state">État de São Paulo</region></placeName></affiliation></author><author><name sortKey="Silva, Marcos Rogerio Pupo" sort="Silva, Marcos Rogerio Pupo" uniqKey="Silva M" first="Marcos Rogério Pupo" last="Silva">Marcos Rogério Pupo Silva</name><affiliation wicri:level="3"><nlm:aff id="aff01">DDS, MsC, Graduate student, Department of Implantology, University Santo Amaro, São Paulo, São Paulo, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MsC, Graduate student, Department of Implantology, University Santo Amaro, São Paulo, São Paulo</wicri:regionArea><placeName><settlement type="city">São Paulo</settlement><region type="state">État de São Paulo</region></placeName></affiliation></author><author><name sortKey="Sendyk, Claudio Luiz" sort="Sendyk, Claudio Luiz" uniqKey="Sendyk C" first="Claudio Luiz" last="Sendyk">Claudio Luiz Sendyk</name><affiliation wicri:level="4"><nlm:aff id="aff02">DDS, MSc, PhD, Associate Professor, Department of Prosthodontics, University of São Paulo, São Paulo, São Paulo, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, PhD, Associate Professor, Department of Prosthodontics, University of São Paulo, São Paulo, São Paulo</wicri:regionArea><placeName><settlement type="city">São Paulo</settlement><region type="state">État de São Paulo</region><settlement type="city">São Paulo</settlement></placeName><orgName type="university">Université de São Paulo</orgName></affiliation></author><author><name sortKey="Sendyk, Wilson Roberto" sort="Sendyk, Wilson Roberto" uniqKey="Sendyk W" first="Wilson Roberto" last="Sendyk">Wilson Roberto Sendyk</name><affiliation wicri:level="3"><nlm:aff id="aff03">DDS, MSc, PhD, Associate Professor, Department of Implantology, University Santo Amaro, São Paulo, São Paulo, Brazil</nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea>DDS, MSc, PhD, Associate Professor, Department of Implantology, University Santo Amaro, São Paulo, São Paulo</wicri:regionArea><placeName><settlement type="city">São Paulo</settlement><region type="state">État de São Paulo</region></placeName></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="2007">2007</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>One of the causes of implant failures in cemented implant-retained prostheses is the fracture of abutment screw or UCLA abutment. This article reports a case of simultaneous fracture of two UCLA abutments screws occurring in an implant-supported prosthesis placed in the mandibular molar region. The fractured structures were examined under scanning electron microscopy to investigate the probable causes of the failure, which were not related to failures on materials or fabrication of the screws, but rather were due to shear forces. The misfit in cemented prostheses may be the most likely cause of shear force generation.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Adell, R" uniqKey="Adell R">R Adell</name></author><author><name sortKey="Lekholm, U" uniqKey="Lekholm U">U Lekholm</name></author><author><name sortKey="Rockler, B" uniqKey="Rockler B">B Rockler</name></author><author><name sortKey="Branemark, Pi" uniqKey="Branemark P">PI Branemark</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Assif, D" uniqKey="Assif D">D Assif</name></author><author><name sortKey="Marshak, B" uniqKey="Marshak B">B Marshak</name></author><author><name sortKey="Schmidt, A" uniqKey="Schmidt A">A Schmidt</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Bassit, R" uniqKey="Bassit R">R Bassit</name></author><author><name sortKey="Lindstrom, H" uniqKey="Lindstrom H">H Lindstrom</name></author><author><name sortKey="Rangert, B" uniqKey="Rangert B">B Rangert</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Binon, Pp" uniqKey="Binon P">PP Binon</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Eckert, Se" uniqKey="Eckert S">SE Eckert</name></author><author><name sortKey="Steven, Ee" uniqKey="Steven E">EE Steven</name></author><author><name sortKey="Meraw, Sj" uniqKey="Meraw S">SJ Meraw</name></author><author><name sortKey="Cal, E" uniqKey="Cal E">E Cal</name></author><author><name sortKey="Ow, Rk" uniqKey="Ow R">RK Ow</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Guichet, Dl" uniqKey="Guichet D">DL Guichet</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Guichet, Dl" uniqKey="Guichet D">DL Guichet</name></author><author><name sortKey="Caputo, Aa" uniqKey="Caputo A">AA Caputo</name></author><author><name sortKey="Choi, H" uniqKey="Choi H">H Choi</name></author><author><name sortKey="Sorensen, Ja" uniqKey="Sorensen J">JA Sorensen</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Hebel, Ks" uniqKey="Hebel K">KS Hebel</name></author><author><name sortKey="Gajjar, Rc" uniqKey="Gajjar R">RC Gajjar</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Jemt, T" uniqKey="Jemt T">T Jemt</name></author><author><name sortKey="Book, K" uniqKey="Book K">K Book</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kronstrom, M" uniqKey="Kronstrom M">M Kronstrom</name></author><author><name sortKey="Svenson, B" uniqKey="Svenson B">B Svenson</name></author><author><name sortKey="Hellman, M" uniqKey="Hellman M">M Hellman</name></author><author><name sortKey="Persson, Gr" uniqKey="Persson G">GR Persson</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Misch, C" uniqKey="Misch C">C Misch</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Rangert, B" uniqKey="Rangert B">B Rangert</name></author><author><name sortKey="Jemt, T" uniqKey="Jemt T">T Jemt</name></author><author><name sortKey="Jorneus, L" uniqKey="Jorneus L">L Jorneus</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Rieder, Ce" uniqKey="Rieder C">CE Rieder</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Sendyk, Cl" uniqKey="Sendyk C">CL Sendyk</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Sendyk, Wr" uniqKey="Sendyk W">WR Sendyk</name></author><author><name sortKey="Sendyk, Cl" uniqKey="Sendyk C">CL Sendyk</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Sendyk, Wr" uniqKey="Sendyk W">WR Sendyk</name></author><author><name sortKey="Sendyk, Cl" uniqKey="Sendyk C">CL Sendyk</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Setz, J" uniqKey="Setz J">J Setz</name></author><author><name sortKey="Kramer, A" uniqKey="Kramer A">A Kramer</name></author><author><name sortKey="Benzing, U" uniqKey="Benzing U">U Benzing</name></author><author><name sortKey="Weber, H" uniqKey="Weber H">H Weber</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Taylor, Td" uniqKey="Taylor T">TD Taylor</name></author><author><name sortKey="Agar, Jr" uniqKey="Agar J">JR Agar</name></author><author><name sortKey="Vogiatzi, T" uniqKey="Vogiatzi T">T Vogiatzi</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">19089120</article-id><article-id pub-id-type="pmc">4327248</article-id><article-id pub-id-type="publisher-id">S1678-77572007000200015</article-id><article-id pub-id-type="doi">10.1590/S1678-77572007000200015</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>FRACTURE OF ABUTMENT SCREW SUPPORTING A CEMENTED IMPLANT-RETAINED PROSTHESIS WITH EXTERNAL HEXAGON CONNECTION: A CASE REPORT WITH SEM EVALUATION</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Santos</surname><given-names>Mariana Diniz Bisi</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>Pfeifer</surname><given-names>Arthur Braga</given-names></name><xref ref-type="aff" rid="aff01"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Silva</surname><given-names>Marcos Rogério Pupo</given-names></name><xref ref-type="aff" rid="aff01"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Sendyk</surname><given-names>Claudio Luiz</given-names></name><xref ref-type="aff" rid="aff02"><sup>2</sup></xref></contrib><contrib contrib-type="author"><name><surname>Sendyk</surname><given-names>WIlson Roberto</given-names></name><xref ref-type="aff" rid="aff03"><sup>3</sup></xref></contrib><aff id="aff01"><label>1</label>DDS, MsC, Graduate student, Department of Implantology, University Santo Amaro, São Paulo, São Paulo, Brazil</aff><aff id="aff02"><label>2</label>DDS, MSc, PhD, Associate Professor, Department of Prosthodontics, University of São Paulo, São Paulo, São Paulo, Brazil</aff><aff id="aff03"><label>3</label>DDS, MSc, PhD, Associate Professor, Department of Implantology, University Santo Amaro, São Paulo, São Paulo, Brazil</aff></contrib-group><author-notes><corresp id="c01"><bold>Corresponding address:</bold> Mariana Diniz Bisi dos Santos - Rua Diogo Moia, n 380, apt 1601, Umarizal - 66055-170, Belém, PA, Brazil Phone <phone>55 91 32230237</phone> or <phone>55 91 99822502</phone> - e-mail:<email>marianabisi@hotmail.com</email></corresp></author-notes><pub-date pub-type="epub-ppub"><month>4</month><year>2007</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>2007</year></pub-date><volume>15</volume><issue>2</issue><fpage>148</fpage><lpage>151</lpage><history><date date-type="received"><day>13</day><month>12</month><year>2006</year></date><date date-type="rev-recd"><day>16</day><month>3</month><year>2007</year></date><date date-type="accepted"><day>13</day><month>4</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>One of the causes of implant failures in cemented implant-retained prostheses is the fracture of abutment screw or UCLA abutment. This article reports a case of simultaneous fracture of two UCLA abutments screws occurring in an implant-supported prosthesis placed in the mandibular molar region. The fractured structures were examined under scanning electron microscopy to investigate the probable causes of the failure, which were not related to failures on materials or fabrication of the screws, but rather were due to shear forces. The misfit in cemented prostheses may be the most likely cause of shear force generation.</p></abstract><kwd-group><kwd>Osseointegrated implants</kwd><kwd>Dental abutments</kwd><kwd>Fractures</kwd><kwd>Prostheses and implants</kwd></kwd-group><counts><fig-count count="5"></fig-count><table-count count="0"></table-count><equation-count count="0"></equation-count><ref-count count="18"></ref-count><page-count count="4"></page-count></counts></article-meta></front></pmc><affiliations><list><country><li>Brésil</li></country><region><li>État de São Paulo</li></region><settlement><li>São Paulo</li></settlement><orgName><li>Université de São Paulo</li></orgName></list><tree><country name="Brésil"><region name="État de São Paulo"><name sortKey="Santos, Mariana Diniz Bisi" sort="Santos, Mariana Diniz Bisi" uniqKey="Santos M" first="Mariana Diniz Bisi" last="Santos">Mariana Diniz Bisi Santos</name></region><name sortKey="Pfeifer, Arthur Braga" sort="Pfeifer, Arthur Braga" uniqKey="Pfeifer A" first="Arthur Braga" last="Pfeifer">Arthur Braga Pfeifer</name><name sortKey="Sendyk, Claudio Luiz" sort="Sendyk, Claudio Luiz" uniqKey="Sendyk C" first="Claudio Luiz" last="Sendyk">Claudio Luiz Sendyk</name><name sortKey="Sendyk, Wilson Roberto" sort="Sendyk, Wilson Roberto" uniqKey="Sendyk W" first="Wilson Roberto" last="Sendyk">Wilson Roberto Sendyk</name><name sortKey="Silva, Marcos Rogerio Pupo" sort="Silva, Marcos Rogerio Pupo" uniqKey="Silva M" first="Marcos Rogério Pupo" last="Silva">Marcos Rogério Pupo Silva</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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