Detorque Evaluation of Dental Abutment Screws after Immersion in a Fluoridated Artificial Saliva Solution
Identifieur interne : 005641 ( Istex/Corpus ); précédent : 005640; suivant : 005642Detorque Evaluation of Dental Abutment Screws after Immersion in a Fluoridated Artificial Saliva Solution
Auteurs : Antônio R. C. Duarte ; João P. Silva Neto ; Júlio C. M. Souza ; Wellington C. BonachelaSource :
- Journal of Prosthodontics [ 1059-941X ] ; 2013-06.
English descriptors
- KwdEn :
- Abutment, Abutment screw surfaces, Abutment screws, Abutment unscrewing, Abutment weight, Alloy, Alloy alloy, American college, Chemical analysis, Chemical composition, Corrosion, Corrosion behavior, Corrosion resistance, Corrosive substances, Dent, Dent mater, Dental abutment screws, Dental abutment screws duarte, Dental implants, Detorque, Detorque evaluation, Detorque values, Duarte, Galvanic corrosion, Handheld torque meter, Immersion, Implant, Initial detorque, Internal connection, Lactic acid, Localized corrosion, Mater, Maxillofac, Mechanical integrity, Mechanical properties, Oral maxillofac implants, Osseointegrated implants, Prosthet, Prosthet dent, Prosthodontics, Prosthodontist, Prosthodontists duarte, Reaction layer, Saliva, Saliva solution, Scanning electron microscopy, Souza, Static contact, Structural materials, Titanium, Uoridated, Uoridated saliva, Uoridated saliva solution, Uoridated solution, Uoridated solutions, Uoride, Uoride concentration, Uorides, Weight increase.
- Teeft :
- Abutment, Abutment screw surfaces, Abutment screws, Abutment unscrewing, Abutment weight, Alloy, Alloy alloy, American college, Chemical analysis, Chemical composition, Corrosion, Corrosion behavior, Corrosion resistance, Corrosive substances, Dent, Dent mater, Dental abutment screws, Dental abutment screws duarte, Dental implants, Detorque, Detorque evaluation, Detorque values, Duarte, Galvanic corrosion, Handheld torque meter, Immersion, Implant, Initial detorque, Internal connection, Lactic acid, Localized corrosion, Mater, Maxillofac, Mechanical integrity, Mechanical properties, Oral maxillofac implants, Osseointegrated implants, Prosthet, Prosthet dent, Prosthodontics, Prosthodontist, Prosthodontists duarte, Reaction layer, Saliva, Saliva solution, Scanning electron microscopy, Souza, Static contact, Structural materials, Titanium, Uoridated, Uoridated saliva, Uoridated saliva solution, Uoridated solution, Uoridated solutions, Uoride, Uoride concentration, Uorides, Weight increase.
Abstract
Implant‐abutment connections still present failures in the oral cavity due to the loosening of mechanical integrity by detorque and corrosion of the abutment screws. The objective of this study was to evaluate the detorque of dental abutment screws before and after immersion in fluoridated solutions.
Url:
DOI: 10.1111/j.1532-849X.2012.00941.x
Links to Exploration step
ISTEX:AD672C8EE8C96FA9BEE8B26CF936BCC8CDF8CCF8Le document en format XML
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Silva Neto</name><affiliation><mods:affiliation>Postgraduate student, School of Dentistry, Campinas, Unicamp, Brazil</mods:affiliation></affiliation></author><author><name sortKey="Souza, Julio C M" sort="Souza, Julio C M" uniqKey="Souza J" first="Júlio C. M." last="Souza">Júlio C. M. Souza</name><affiliation><mods:affiliation>Professor, School of Dental Medicine, FCS, Universidade Fernando Pessoa, Porto, Portugal</mods:affiliation></affiliation><affiliation><mods:affiliation>Researcher, Center for Mechanical and Materials Technologies (CT2M), Universidade do Minho, Guimarães, Portugal</mods:affiliation></affiliation></author><author><name sortKey="Bonachela, Wellington C" sort="Bonachela, Wellington C" uniqKey="Bonachela W" first="Wellington C." last="Bonachela">Wellington C. 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C." last="Duarte">Antônio R. C. Duarte</name><affiliation><mods:affiliation>Associate Professor, Division of Prosthodontics, School of Dentistry–DOD, Universidade Federal do Rio Grande do Norte, Natal, Brazil</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: rduarte60@yahoo.com.br</mods:affiliation></affiliation></author><author><name sortKey="Neto, Joao P Silva" sort="Neto, Joao P Silva" uniqKey="Neto J" first="João P. Silva" last="Neto">João P. Silva Neto</name><affiliation><mods:affiliation>Postgraduate student, School of Dentistry, Campinas, Unicamp, Brazil</mods:affiliation></affiliation></author><author><name sortKey="Souza, Julio C M" sort="Souza, Julio C M" uniqKey="Souza J" first="Júlio C. M." last="Souza">Júlio C. M. 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Duarte DDS, MS</name><affiliations><json:string>Associate Professor, Division of Prosthodontics, School of Dentistry–DOD, Universidade Federal do Rio Grande do Norte, Natal, Brazil</json:string><json:string>E-mail: rduarte60@yahoo.com.br</json:string></affiliations></json:item><json:item><name>João P. Silva Neto MS</name><affiliations><json:string>Postgraduate student, School of Dentistry, Campinas, Unicamp, Brazil</json:string></affiliations></json:item><json:item><name>Júlio C.M. Souza PhD, MS</name><affiliations><json:string>Professor, School of Dental Medicine, FCS, Universidade Fernando Pessoa, Porto, Portugal</json:string><json:string>Researcher, Center for Mechanical and Materials Technologies (CT2M), Universidade do Minho, Guimarães, Portugal</json:string></affiliations></json:item><json:item><name>Wellington C. Bonachela DDS, MS</name><affiliations><json:string>Associate Professor, Department of Prosthodontics, School of Dentistry, Universidade de São Paulo (USP), Bauru, Brazil</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>Dental abutments</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>dental implants</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>screw loosening</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>torque</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>corrosion</value></json:item></subject><articleId><json:string>JOPR941</json:string></articleId><arkIstex>ark:/67375/WNG-36F74DP1-C</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Implant‐abutment connections still present failures in the oral cavity due to the loosening of mechanical integrity by detorque and corrosion of the abutment screws. The objective of this study was to evaluate the detorque of dental abutment screws before and after immersion in fluoridated solutions.</abstract><qualityIndicators><score>6.747</score><pdfWordCount>4207</pdfWordCount><pdfCharCount>27286</pdfCharCount><pdfVersion>1.3</pdfVersion><pdfPageCount>7</pdfPageCount><pdfPageSize>595.274 x 782.286 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>45</abstractWordCount><abstractCharCount>301</abstractCharCount><keywordCount>5</keywordCount></qualityIndicators><title>Detorque Evaluation of Dental Abutment Screws after Immersion in a Fluoridated Artificial Saliva Solution</title><pmid><json:string>23107466</json:string></pmid><genre><json:string>article</json:string></genre><host><title>Journal of Prosthodontics</title><language><json:string>unknown</json:string></language><doi><json:string>10.1111/(ISSN)1532-849X</json:string></doi><issn><json:string>1059-941X</json:string></issn><eissn><json:string>1532-849X</json:string></eissn><publisherId><json:string>JOPR</json:string></publisherId><volume>22</volume><issue>4</issue><pages><first>275</first><last>281</last><total>7</total></pages><genre><json:string>journal</json:string></genre><subject><json:item><value>Original Article</value></json:item></subject></host><namedEntities><unitex><date><json:string>2013-06-21</json:string></date><geogName><json:string>Rio Grande</json:string></geogName><orgName><json:string>Researcher, Center for Mechanical and Materials Technologies</json:string><json:string>R</json:string><json:string>Tonichi America Corp</json:string><json:string>Division of Prosthodontics</json:string><json:string>American College of Prosthodontists</json:string><json:string>Scientech, Boulder</json:string><json:string>Brazil Postgraduate</json:string><json:string>Department of Prosthodontics, School of Dentistry, Universidade</json:string></orgName><orgName_funder></orgName_funder><orgName_provider></orgName_provider><persName><json:string>Antonio Ricardo</json:string><json:string>E. Figure</json:string><json:string>C.M. Souza</json:string><json:string>T. Signs</json:string><json:string>Silva Neto</json:string><json:string>Fernando Pessoa</json:string><json:string>C. Bonachela</json:string></persName><placeName><json:string>IL</json:string><json:string>Northbrook</json:string><json:string>Brazil</json:string><json:string>Porto</json:string><json:string>Portugal</json:string><json:string>Sao Paulo</json:string><json:string>Sao Jose</json:string></placeName><ref_url></ref_url><ref_bibl><json:string>Souza et al</json:string><json:string>Kuphasuk et al</json:string><json:string>Duarte et al</json:string><json:string>Zavanelli et al</json:string><json:string>Gil et al</json:string><json:string>Schiff et al</json:string><json:string>Guindy et al</json:string></ref_bibl><bibl></bibl></unitex></namedEntities><ark><json:string>ark:/67375/WNG-36F74DP1-C</json:string></ark><categories><wos><json:string>1 - science</json:string><json:string>2 - dentistry, oral surgery & medicine</json:string></wos><scienceMetrix><json:string>1 - health sciences</json:string><json:string>2 - clinical medicine</json:string><json:string>3 - dentistry</json:string></scienceMetrix><scopus><json:string>1 - Health Sciences</json:string><json:string>2 - Dentistry</json:string><json:string>3 - General Dentistry</json:string></scopus></categories><publicationDate>2013</publicationDate><copyrightDate>2013</copyrightDate><doi><json:string>10.1111/j.1532-849X.2012.00941.x</json:string></doi><id>AD672C8EE8C96FA9BEE8B26CF936BCC8CDF8CCF8</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/AD672C8EE8C96FA9BEE8B26CF936BCC8CDF8CCF8/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/AD672C8EE8C96FA9BEE8B26CF936BCC8CDF8CCF8/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/AD672C8EE8C96FA9BEE8B26CF936BCC8CDF8CCF8/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main">Detorque Evaluation of Dental Abutment Screws after Immersion in a Fluoridated Artificial Saliva Solution</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Wiley Publishing Ltd</publisher><availability><licence>© 2012 by the American College of Prosthodontists</licence></availability><date type="published" when="2013-06"></date></publicationStmt><notesStmt><note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note><note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="article"><analytic><title level="a" type="main">Detorque Evaluation of Dental Abutment Screws after Immersion in a Fluoridated Artificial Saliva Solution</title><title level="a" type="short">Detorque Evaluation of Dental Abutment Screws</title><author xml:id="author-0000" role="corresp"><persName><forename type="first">Antônio R.C.</forename><surname>Duarte</surname><roleName type="degree">DDS, MS</roleName></persName><affiliation><orgName>Associate Professor, Division of Prosthodontics, School of Dentistry–DOD</orgName><orgName>Universidade Federal do Rio Grande do Norte</orgName><address><settlement type="city">Natal</settlement><country key="BR">Brazil</country></address></affiliation><affiliation>Correspondence Antônio Ricardo Calazans Duarte, Universidade Federal do Rio Grande do Norte, Departamento de Odontologia (DOD), Avenida Senador Salgado Filho, 1787, CEP: 59056–000, Natal, Brazil. E‐mail: rduarte60@yahoo.com.br</affiliation></author><author xml:id="author-0001"><persName><forename type="first">João P. Silva</forename><surname>Neto</surname><roleName type="degree">MS</roleName></persName><affiliation><orgName>Postgraduate student</orgName><orgName>School of Dentistry</orgName><address><settlement type="city">Unicamp</settlement><region>Campinas</region><country key="BR">Brazil</country></address></affiliation></author><author xml:id="author-0002"><persName><forename type="first">Júlio C.M.</forename><surname>Souza</surname><roleName type="degree">PhD, MS</roleName></persName><affiliation><orgName>Professor, School of Dental Medicine, FCS</orgName><orgName>Universidade Fernando Pessoa</orgName><address><settlement type="city">Porto</settlement><country key="PT">Portugal</country></address></affiliation><affiliation><orgName>Researcher, Center for Mechanical and Materials Technologies (CT2M)</orgName><orgName>Universidade do Minho</orgName><address><settlement type="city">Guimarães</settlement><country key="PT">Portugal</country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">Wellington C.</forename><surname>Bonachela</surname><roleName type="degree">DDS, MS</roleName></persName><affiliation><orgName>Associate Professor, Department of Prosthodontics, School of Dentistry</orgName><orgName>Universidade de São Paulo (USP)</orgName><address><settlement type="city">Bauru</settlement><country key="BR">Brazil</country></address></affiliation></author><idno type="istex">AD672C8EE8C96FA9BEE8B26CF936BCC8CDF8CCF8</idno><idno type="ark">ark:/67375/WNG-36F74DP1-C</idno><idno type="DOI">10.1111/j.1532-849X.2012.00941.x</idno><idno type="unit">JOPR941</idno><idno type="toTypesetVersion">file:JOPR.JOPR941.pdf</idno></analytic><monogr><title level="j" type="main">Journal of Prosthodontics</title><title level="j" type="alt">JOURNAL OF PROSTHODONTICS</title><idno type="pISSN">1059-941X</idno><idno type="eISSN">1532-849X</idno><idno type="book-DOI">10.1111/(ISSN)1532-849X</idno><idno type="book-part-DOI">10.1111/jopr.2013.22.issue-4</idno><idno type="product">JOPR</idno><imprint><biblScope unit="vol">22</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="275">275</biblScope><biblScope unit="page" to="281">281</biblScope><biblScope unit="page-count">7</biblScope><date type="published" when="2013-06"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract style="main"><head>Abstract</head>
Purpose
<p>Implant‐abutment connections still present failures in the oral cavity due to the loosening of mechanical integrity by detorque and corrosion of the abutment screws. The objective of this study was to evaluate the detorque of dental abutment screws before and after immersion in fluoridated solutions.</p>
Materials and Methods
<p>Five commercial implant‐abutment assemblies were assessed in this investigation: (C) Conexão®, (E) Emfils®, (I) INP®, (S) SIN®, and (T) Titanium Fix®. The implants were embedded in an acrylic resin and then placed in a holding device. The abutments were first connected to the implants and torqued to 20 Ncm using a handheld torque meter. The detorque values of the abutments were evaluated after 10 minutes. After applying a second torque of 20 Ncm, implant‐abutment assemblies were withdrawn every 3 hours for 12 hours in a fluoridated solution over a period of 90 days. After that period, detorque of the abutments was examined. Scanning electronic microscopy (SEM) associated to energy dispersive spectroscopy (EDS) was applied to inspect the surfaces of abutments.</p>
Results
<p>Detorque values of systems C, E, and I immersed in the fluoridated solution were significantly higher than those of the initial detorque. ANOVA demonstrated no significant differences in detorque values between designs S and T. Signs of localized corrosion could not be detected by SEM although chemical analysis by EDS showed the presence of elements involved in corrosive processes.</p>
Conclusion
<p>An increase of detorque values recorded on abutments after immersion in fluoridated artificial saliva solutions was noticed in this study. Regarding chemical analysis, such an increase of detorque can result from a corrosion layer formed between metallic surfaces at static contact in the implant‐abutment joint during immersion in the fluoridated solutions.</p></abstract><textClass><keywords><term xml:id="jopr941-kwd-0001">Dental abutments</term><term xml:id="jopr941-kwd-0002">dental implants</term><term xml:id="jopr941-kwd-0003">screw loosening</term><term xml:id="jopr941-kwd-0004">torque</term><term xml:id="jopr941-kwd-0005">corrosion</term></keywords><keywords rend="articleCategory"><term>Original Article</term></keywords><keywords rend="tocHeading1"><term>Original Articles</term></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/AD672C8EE8C96FA9BEE8B26CF936BCC8CDF8CCF8/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en" xml:id="JOPR941"><header><publicationMeta level="product"><doi origin="wiley" registered="yes">10.1111/(ISSN)1532-849X</doi><issn type="print">1059-941X</issn><issn type="electronic">1532-849X</issn><idGroup><id type="product" value="JOPR"></id></idGroup><titleGroup><title type="main" sort="JOURNAL OF PROSTHODONTICS">Journal of Prosthodontics</title><title type="short">Journal of Prosthodontics</title></titleGroup></publicationMeta><publicationMeta level="part" position="06104"><doi>10.1111/jopr.2013.22.issue-4</doi><copyright ownership="thirdParty">© 2013 American College of Prosthodontists</copyright><numberingGroup><numbering type="journalVolume" number="22">22</numbering><numbering type="journalIssue">4</numbering></numberingGroup><coverDate startDate="2013-06">June 2013</coverDate></publicationMeta><publicationMeta level="unit" position="50" type="article" status="forIssue"><doi origin="wiley">10.1111/j.1532-849X.2012.00941.x</doi><idGroup><id type="unit" value="JOPR941"></id></idGroup><countGroup><count type="pageTotal" number="7"></count></countGroup><titleGroup><title type="articleCategory">Original Article</title><title type="tocHeading1">Original Articles</title></titleGroup><copyright ownership="thirdParty">© 2012 by the American College of Prosthodontists</copyright><eventGroup><event type="manuscriptAccepted" date="2012-08-19"></event><event type="xmlCreated" agent="Aptara" date="2013-06-21"></event><event type="publishedOnlineEarlyUnpaginated" date="2012-10-25"></event><event type="firstOnline" date="2012-10-25"></event><event type="publishedOnlineFinalForm" date="2013-06-24"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-31"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.6.4 mode:FullText" date="2015-10-03"></event></eventGroup><numberingGroup><numbering type="pageFirst">275</numbering><numbering type="pageLast">281</numbering></numberingGroup><correspondenceTo><b>Correspondence</b> Antônio Ricardo Calazans Duarte, Universidade Federal do Rio Grande do Norte, Departamento de Odontologia (DOD), Avenida Senador Salgado Filho, 1787, CEP: 59056–000, Natal, Brazil. E‐mail: <email>rduarte60@yahoo.com.br</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:JOPR.JOPR941.pdf"></link></linkGroup></publicationMeta><contentMeta><titleGroup><title type="main">Detorque Evaluation of Dental Abutment Screws after Immersion in a Fluoridated Artificial Saliva Solution</title><title type="shortAuthors">Duarte <i>et al</i></title><title type="short">Detorque Evaluation of Dental Abutment Screws</title></titleGroup><creators><creator creatorRole="author" xml:id="jopr941-cr-0001" corresponding="yes" affiliationRef="#jopr941-aff-0001"><personName><givenNames>Antônio R.C.</givenNames><familyName>Duarte</familyName><degrees>DDS, MS</degrees></personName></creator><creator creatorRole="author" xml:id="jopr941-cr-0002" affiliationRef="#jopr941-aff-0002"><personName><givenNames>João P. Silva</givenNames><familyName>Neto</familyName><degrees>MS</degrees></personName></creator><creator creatorRole="author" xml:id="jopr941-cr-0003" affiliationRef="#jopr941-aff-0003 #jopr941-aff-0004"><personName><givenNames>Júlio C.M.</givenNames><familyName>Souza</familyName><degrees>PhD, MS</degrees></personName></creator><creator creatorRole="author" xml:id="jopr941-cr-0004" affiliationRef="#jopr941-aff-0005"><personName><givenNames>Wellington C.</givenNames><familyName>Bonachela</familyName><degrees>DDS, MS</degrees></personName></creator></creators><affiliationGroup><affiliation xml:id="jopr941-aff-0001" countryCode="BR"><orgDiv>Associate Professor, Division of Prosthodontics, School of Dentistry–DOD</orgDiv><orgName>Universidade Federal do Rio Grande do Norte</orgName><address><city>Natal</city><country>Brazil</country></address></affiliation><affiliation xml:id="jopr941-aff-0002" countryCode="BR"><orgDiv>Postgraduate student</orgDiv><orgName>School of Dentistry</orgName><address><city>Unicamp</city><countryPart>Campinas</countryPart><country>Brazil</country></address></affiliation><affiliation xml:id="jopr941-aff-0003" countryCode="PT"><orgDiv>Professor, School of Dental Medicine, FCS</orgDiv><orgName>Universidade Fernando Pessoa</orgName><address><city>Porto</city><country>Portugal</country></address></affiliation><affiliation xml:id="jopr941-aff-0004" countryCode="PT"><orgDiv>Researcher, Center for Mechanical and Materials Technologies (CT2M)</orgDiv><orgName>Universidade do Minho</orgName><address><city>Guimarães</city><country>Portugal</country></address></affiliation><affiliation xml:id="jopr941-aff-0005" countryCode="BR"><orgDiv>Associate Professor, Department of Prosthodontics, School of Dentistry</orgDiv><orgName>Universidade de São Paulo (USP)</orgName><address><city>Bauru</city><country>Brazil</country></address></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="jopr941-kwd-0001">Dental abutments</keyword><keyword xml:id="jopr941-kwd-0002">dental implants</keyword><keyword xml:id="jopr941-kwd-0003">screw loosening</keyword><keyword xml:id="jopr941-kwd-0004">torque</keyword><keyword xml:id="jopr941-kwd-0005">corrosion</keyword></keywordGroup><abstractGroup><abstract type="main"><title type="main">Abstract</title><section xml:id="jopr941-sec-0010"><title type="main">Purpose</title><p>Implant‐abutment connections still present failures in the oral cavity due to the loosening of mechanical integrity by detorque and corrosion of the abutment screws. The objective of this study was to evaluate the detorque of dental abutment screws before and after immersion in fluoridated solutions.</p></section><section xml:id="jopr941-sec-0020"><title type="main">Materials and Methods</title><p>Five commercial implant‐abutment assemblies were assessed in this investigation: (C) Conexão®, (E) Emfils®, (I) INP®, (S) SIN®, and (T) Titanium Fix®. The implants were embedded in an acrylic resin and then placed in a holding device. The abutments were first connected to the implants and torqued to 20 Ncm using a handheld torque meter. The detorque values of the abutments were evaluated after 10 minutes. After applying a second torque of 20 Ncm, implant‐abutment assemblies were withdrawn every 3 hours for 12 hours in a fluoridated solution over a period of 90 days. After that period, detorque of the abutments was examined. Scanning electronic microscopy (SEM) associated to energy dispersive spectroscopy (EDS) was applied to inspect the surfaces of abutments.</p></section><section xml:id="jopr941-sec-0030"><title type="main">Results</title><p>Detorque values of systems C, E, and I immersed in the fluoridated solution were significantly higher than those of the initial detorque. ANOVA demonstrated no significant differences in detorque values between designs S and T. Signs of localized corrosion could not be detected by SEM although chemical analysis by EDS showed the presence of elements involved in corrosive processes.</p></section><section xml:id="jopr941-sec-0040"><title type="main">Conclusion</title><p>An increase of detorque values recorded on abutments after immersion in fluoridated artificial saliva solutions was noticed in this study. Regarding chemical analysis, such an increase of detorque can result from a corrosion layer formed between metallic surfaces at static contact in the implant‐abutment joint during immersion in the fluoridated solutions.</p></section></abstract></abstractGroup></contentMeta><noteGroup><note xml:id="jopr941-note-0001" numbered="no"><p><i>The authors deny any conflicts of interest</i>.</p></note></noteGroup></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Detorque Evaluation of Dental Abutment Screws after Immersion in a Fluoridated Artificial Saliva Solution</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Detorque Evaluation of Dental Abutment Screws</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Detorque Evaluation of Dental Abutment Screws after Immersion in a Fluoridated Artificial Saliva Solution</title></titleInfo><name type="personal"><namePart type="given">Antônio R.C.</namePart><namePart type="family">Duarte</namePart><namePart type="termsOfAddress">DDS, MS</namePart><affiliation>Associate Professor, Division of Prosthodontics, School of Dentistry–DOD, Universidade Federal do Rio Grande do Norte, Natal, Brazil</affiliation><affiliation>E-mail: rduarte60@yahoo.com.br</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">João P. Silva</namePart><namePart type="family">Neto</namePart><namePart type="termsOfAddress">MS</namePart><affiliation>Postgraduate student, School of Dentistry, Campinas, Unicamp, Brazil</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Júlio C.M.</namePart><namePart type="family">Souza</namePart><namePart type="termsOfAddress">PhD, MS</namePart><affiliation>Professor, School of Dental Medicine, FCS, Universidade Fernando Pessoa, Porto, Portugal</affiliation><affiliation>Researcher, Center for Mechanical and Materials Technologies (CT2M), Universidade do Minho, Guimarães, Portugal</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Wellington C.</namePart><namePart type="family">Bonachela</namePart><namePart type="termsOfAddress">DDS, MS</namePart><affiliation>Associate Professor, Department of Prosthodontics, School of Dentistry, Universidade de São Paulo (USP), Bauru, Brazil</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2013-06</dateIssued><dateCreated encoding="w3cdtf">2013-06-21</dateCreated><dateValid encoding="w3cdtf">2012-08-19</dateValid><copyrightDate encoding="w3cdtf">2013</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><abstract>Implant‐abutment connections still present failures in the oral cavity due to the loosening of mechanical integrity by detorque and corrosion of the abutment screws. The objective of this study was to evaluate the detorque of dental abutment screws before and after immersion in fluoridated solutions.</abstract><abstract>Five commercial implant‐abutment assemblies were assessed in this investigation: (C) Conexão®, (E) Emfils®, (I) INP®, (S) SIN®, and (T) Titanium Fix®. The implants were embedded in an acrylic resin and then placed in a holding device. The abutments were first connected to the implants and torqued to 20 Ncm using a handheld torque meter. The detorque values of the abutments were evaluated after 10 minutes. After applying a second torque of 20 Ncm, implant‐abutment assemblies were withdrawn every 3 hours for 12 hours in a fluoridated solution over a period of 90 days. After that period, detorque of the abutments was examined. Scanning electronic microscopy (SEM) associated to energy dispersive spectroscopy (EDS) was applied to inspect the surfaces of abutments.</abstract><abstract>Detorque values of systems C, E, and I immersed in the fluoridated solution were significantly higher than those of the initial detorque. ANOVA demonstrated no significant differences in detorque values between designs S and T. Signs of localized corrosion could not be detected by SEM although chemical analysis by EDS showed the presence of elements involved in corrosive processes.</abstract><abstract>An increase of detorque values recorded on abutments after immersion in fluoridated artificial saliva solutions was noticed in this study. Regarding chemical analysis, such an increase of detorque can result from a corrosion layer formed between metallic surfaces at static contact in the implant‐abutment joint during immersion in the fluoridated solutions.</abstract><subject><genre>keywords</genre><topic>Dental abutments</topic><topic>dental implants</topic><topic>screw loosening</topic><topic>torque</topic><topic>corrosion</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Prosthodontics</title></titleInfo><titleInfo type="abbreviated"><title>Journal of Prosthodontics</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><subject><genre>article-category</genre><topic>Original Article</topic></subject><identifier type="ISSN">1059-941X</identifier><identifier type="eISSN">1532-849X</identifier><identifier type="DOI">10.1111/(ISSN)1532-849X</identifier><identifier type="PublisherID">JOPR</identifier><part><date>2013</date><detail type="volume"><caption>vol.</caption><number>22</number></detail><detail type="issue"><caption>no.</caption><number>4</number></detail><extent unit="pages"><start>275</start><end>281</end><total>7</total></extent></part></relatedItem><identifier type="istex">AD672C8EE8C96FA9BEE8B26CF936BCC8CDF8CCF8</identifier><identifier type="ark">ark:/67375/WNG-36F74DP1-C</identifier><identifier type="DOI">10.1111/j.1532-849X.2012.00941.x</identifier><identifier type="ArticleID">JOPR941</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2013 American College of Prosthodontists© 2012 by the American College of Prosthodontists</accessCondition><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-L0C46X92-X">wiley</recordContentSource></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/AD672C8EE8C96FA9BEE8B26CF936BCC8CDF8CCF8/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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