Effect of metallic flask closure and investment materials on the stability of the denture base resin
Identifieur interne : 005306 ( Istex/Corpus ); précédent : 005305; suivant : 005307Effect of metallic flask closure and investment materials on the stability of the denture base resin
Auteurs : Rafael Leonardo Xediek Consani ; Marcelo Ferraz Mesquita ; Lourenço Correr Sobrinho ; Mario Alexandre Coelho SinhoretiSource :
- Journal of Applied Polymer Science [ 0021-8995 ] ; 2010-05-05.
English descriptors
- KwdEn :
- Adaptation, Assoc, Best denture base resin adaptation, Better adaptation, Braz dent, Canine, Canines region, Case letters, Closure, Complete denture, Complete denture procedure, Confidence level, Consani, Dent, Dent assoc, Dental stone, Denture, Denture base, Denture base adaptation, Denture base resin, Denture base resin adaptation, Dimensional changes, Dimensional stability, First molars, First molars region, Flask, Flask closure, Flask closure techniques, Flask cooling, Future studies, Intermediate value, Investment material, Investment materials, Molar, Palatal, Pmma, Pmma dough, Pmma polymer, Polymer, Polymer science, Polymerization shrinkage, Posterior palatal, Posterior palatal region, Posterior palate, Prosthet, Prosthet dent, Prosthodont, Resin, Screws methods, Significant difference, Significant differences, Silicone, Silicone investment, Silicone investments, Standard deviation, Stone cast, Upper case letters.
- Teeft :
- Adaptation, Assoc, Best denture base resin adaptation, Better adaptation, Braz dent, Canine, Canines region, Case letters, Closure, Complete denture, Complete denture procedure, Confidence level, Consani, Dent, Dent assoc, Dental stone, Denture, Denture base, Denture base adaptation, Denture base resin, Denture base resin adaptation, Dimensional changes, Dimensional stability, First molars, First molars region, Flask, Flask closure, Flask closure techniques, Flask cooling, Future studies, Intermediate value, Investment material, Investment materials, Molar, Palatal, Pmma, Pmma dough, Pmma polymer, Polymer, Polymer science, Polymerization shrinkage, Posterior palatal, Posterior palatal region, Posterior palate, Prosthet, Prosthet dent, Prosthodont, Resin, Screws methods, Significant difference, Significant differences, Silicone, Silicone investment, Silicone investments, Standard deviation, Stone cast, Upper case letters.
Abstract
This study evaluated the dimensional stability of the poly‐methylmethacrylate (PMMA) denture bases under the effect of different metallic flask closure techniques (FCT) and investment materials (IM). Sixty stone cast maxillary‐wax base plate sets were randomly assigned to six groups (n = 10) for the following treatments: 1 and 4—stone or silicone investments and flask closure with clamp; 2 and 5—stone or silicone investments and flask closure with RS system; 3 and 6—stone or silicone investments and flask closure with screws. PMMA denture bases were polymerized in a water bath at 74°C for 9 h. PMMA base‐stone cast sets were sectioned at regions (R) of the canines, first molars, and posterior palatal zone. Gap discrepancies were measured at five points: right and left ridge crests, palatal midline, and right and left marginal limits of the flanges. An optical micrometer with accuracy of 0.0005 mm was used for measurement purposes. Data were submitted to ANOVA and Tukey's test (α = 0.05). Silicone showed an adaptation mean (0.177 mm) significantly different when compared with stone (0.207 mm). The RS system presented a statistically different adaptation mean (0.166 mm) in relation to the traditional clamp (0.200 mm) and flask with screws (0.211 mm). Adaptation values for the regions of the canines (0.141 mm), first molars (0.185 mm), and posterior palatal (0.250 mm) were statistically different. For all flask closure techniques, better adaptation was shown with the RS system and silicone investment. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Url:
DOI: 10.1002/app.31713
Links to Exploration step
ISTEX:A5CE8E1FEF33E9823401AB7120089E0AA5EE1B91Le document en format XML
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Lourenco Correr" uniqKey="Sobrinho L" first="Lourenço Correr" last="Sobrinho">Lourenço Correr Sobrinho</name><affiliation><mods:affiliation>Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</mods:affiliation></affiliation></author><author><name sortKey="Sinhoreti, Mario Alexandre Coelho" sort="Sinhoreti, Mario Alexandre Coelho" uniqKey="Sinhoreti M" first="Mario Alexandre Coelho" last="Sinhoreti">Mario Alexandre Coelho Sinhoreti</name><affiliation><mods:affiliation>Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Journal of Applied Polymer Science</title><title level="j" type="alt">JOURNAL OF APPLIED POLYMER SCIENCE</title><idno type="ISSN">0021-8995</idno><idno type="eISSN">1097-4628</idno><imprint><biblScope unit="vol">116</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="1467">1467</biblScope><biblScope unit="page" to="1474">1474</biblScope><biblScope unit="page-count">8</biblScope><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2010-05-05">2010-05-05</date></imprint><idno type="ISSN">0021-8995</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0021-8995</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adaptation</term><term>Assoc</term><term>Best denture base resin adaptation</term><term>Better adaptation</term><term>Braz dent</term><term>Canine</term><term>Canines region</term><term>Case letters</term><term>Closure</term><term>Complete denture</term><term>Complete denture procedure</term><term>Confidence level</term><term>Consani</term><term>Dent</term><term>Dent assoc</term><term>Dental 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differences</term><term>Silicone</term><term>Silicone investment</term><term>Silicone investments</term><term>Standard deviation</term><term>Stone cast</term><term>Upper case letters</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Adaptation</term><term>Assoc</term><term>Best denture base resin adaptation</term><term>Better adaptation</term><term>Braz dent</term><term>Canine</term><term>Canines region</term><term>Case letters</term><term>Closure</term><term>Complete denture</term><term>Complete denture procedure</term><term>Confidence level</term><term>Consani</term><term>Dent</term><term>Dent assoc</term><term>Dental stone</term><term>Denture</term><term>Denture base</term><term>Denture base adaptation</term><term>Denture base resin</term><term>Denture base resin adaptation</term><term>Dimensional changes</term><term>Dimensional stability</term><term>First molars</term><term>First molars region</term><term>Flask</term><term>Flask closure</term><term>Flask closure techniques</term><term>Flask cooling</term><term>Future studies</term><term>Intermediate value</term><term>Investment material</term><term>Investment materials</term><term>Molar</term><term>Palatal</term><term>Pmma</term><term>Pmma dough</term><term>Pmma polymer</term><term>Polymer</term><term>Polymer science</term><term>Polymerization shrinkage</term><term>Posterior palatal</term><term>Posterior palatal region</term><term>Posterior palate</term><term>Prosthet</term><term>Prosthet dent</term><term>Prosthodont</term><term>Resin</term><term>Screws methods</term><term>Significant difference</term><term>Significant differences</term><term>Silicone</term><term>Silicone investment</term><term>Silicone investments</term><term>Standard deviation</term><term>Stone cast</term><term>Upper case letters</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study evaluated the dimensional stability of the poly‐methylmethacrylate (PMMA) denture bases under the effect of different metallic flask closure techniques (FCT) and investment materials (IM). Sixty stone cast maxillary‐wax base plate sets were randomly assigned to six groups (n = 10) for the following treatments: 1 and 4—stone or silicone investments and flask closure with clamp; 2 and 5—stone or silicone investments and flask closure with RS system; 3 and 6—stone or silicone investments and flask closure with screws. PMMA denture bases were polymerized in a water bath at 74°C for 9 h. PMMA base‐stone cast sets were sectioned at regions (R) of the canines, first molars, and posterior palatal zone. Gap discrepancies were measured at five points: right and left ridge crests, palatal midline, and right and left marginal limits of the flanges. An optical micrometer with accuracy of 0.0005 mm was used for measurement purposes. Data were submitted to ANOVA and Tukey's test (α = 0.05). Silicone showed an adaptation mean (0.177 mm) significantly different when compared with stone (0.207 mm). The RS system presented a statistically different adaptation mean (0.166 mm) in relation to the traditional clamp (0.200 mm) and flask with screws (0.211 mm). Adaptation values for the regions of the canines (0.141 mm), first molars (0.185 mm), and posterior palatal (0.250 mm) were statistically different. For all flask closure techniques, better adaptation was shown with the RS system and silicone investment. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010</div></front></TEI><istex><corpusName>wiley</corpusName><keywords><teeft><json:string>denture</json:string><json:string>pmma</json:string><json:string>silicone</json:string><json:string>consani</json:string><json:string>prosthet dent</json:string><json:string>prosthet</json:string><json:string>denture base resin</json:string><json:string>palatal</json:string><json:string>closure</json:string><json:string>stone cast</json:string><json:string>denture base resin adaptation</json:string><json:string>flask closure</json:string><json:string>polymer</json:string><json:string>dent</json:string><json:string>first molars</json:string><json:string>polymer science</json:string><json:string>silicone investment</json:string><json:string>molar</json:string><json:string>canine</json:string><json:string>significant difference</json:string><json:string>investment materials</json:string><json:string>assoc</json:string><json:string>dent assoc</json:string><json:string>prosthodont</json:string><json:string>flask</json:string><json:string>pmma polymer</json:string><json:string>confidence level</json:string><json:string>case letters</json:string><json:string>dimensional changes</json:string><json:string>denture base adaptation</json:string><json:string>standard deviation</json:string><json:string>best denture base resin adaptation</json:string><json:string>canines region</json:string><json:string>investment material</json:string><json:string>polymerization shrinkage</json:string><json:string>denture base</json:string><json:string>posterior palatal region</json:string><json:string>posterior palatal</json:string><json:string>intermediate value</json:string><json:string>complete denture procedure</json:string><json:string>better adaptation</json:string><json:string>flask cooling</json:string><json:string>future studies</json:string><json:string>first molars region</json:string><json:string>dental stone</json:string><json:string>upper case letters</json:string><json:string>pmma dough</json:string><json:string>complete denture</json:string><json:string>screws methods</json:string><json:string>posterior palate</json:string><json:string>braz dent</json:string><json:string>silicone investments</json:string><json:string>flask closure techniques</json:string><json:string>dimensional stability</json:string><json:string>significant differences</json:string><json:string>resin</json:string><json:string>adaptation</json:string></teeft></keywords><author><json:item><name>Rafael Leonardo Xediek Consani</name><affiliations><json:string>Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</json:string><json:string>E-mail: rconsani@fop.unicamp.br</json:string><json:string>Correspondence address: Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil===</json:string></affiliations></json:item><json:item><name>Marcelo Ferraz Mesquita</name><affiliations><json:string>Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</json:string></affiliations></json:item><json:item><name>Lourenço Correr Sobrinho</name><affiliations><json:string>Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</json:string></affiliations></json:item><json:item><name>Mario Alexandre Coelho Sinhoreti</name><affiliations><json:string>Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>dental polymers</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>resins</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>silicones</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>monomers</value></json:item></subject><articleId><json:string>APP31713</json:string></articleId><arkIstex>ark:/67375/WNG-W0Z5XT37-9</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>This study evaluated the dimensional stability of the poly‐methylmethacrylate (PMMA) denture bases under the effect of different metallic flask closure techniques (FCT) and investment materials (IM). Sixty stone cast maxillary‐wax base plate sets were randomly assigned to six groups (n = 10) for the following treatments: 1 and 4—stone or silicone investments and flask closure with clamp; 2 and 5—stone or silicone investments and flask closure with RS system; 3 and 6—stone or silicone investments and flask closure with screws. PMMA denture bases were polymerized in a water bath at 74°C for 9 h. PMMA base‐stone cast sets were sectioned at regions (R) of the canines, first molars, and posterior palatal zone. Gap discrepancies were measured at five points: right and left ridge crests, palatal midline, and right and left marginal limits of the flanges. An optical micrometer with accuracy of 0.0005 mm was used for measurement purposes. Data were submitted to ANOVA and Tukey's test (α = 0.05). Silicone showed an adaptation mean (0.177 mm) significantly different when compared with stone (0.207 mm). The RS system presented a statistically different adaptation mean (0.166 mm) in relation to the traditional clamp (0.200 mm) and flask with screws (0.211 mm). Adaptation values for the regions of the canines (0.141 mm), first molars (0.185 mm), and posterior palatal (0.250 mm) were statistically different. For all flask closure techniques, better adaptation was shown with the RS system and silicone investment. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010</abstract><qualityIndicators><score>9.608</score><pdfWordCount>4644</pdfWordCount><pdfCharCount>28105</pdfCharCount><pdfVersion>1.3</pdfVersion><pdfPageCount>8</pdfPageCount><pdfPageSize>630 x 810 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>247</abstractWordCount><abstractCharCount>1576</abstractCharCount><keywordCount>4</keywordCount></qualityIndicators><title>Effect of metallic flask closure and investment materials on the stability of the denture base resin</title><genre><json:string>article</json:string></genre><host><title>Journal of Applied Polymer 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resin</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><availability><licence>Copyright © 2010 Wiley Periodicals, Inc.</licence></availability><date type="published" when="2010-05-05"></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" xml:lang="en">Effect of metallic flask closure and investment materials on the stability of the denture base resin</title><title level="a" type="short" xml:lang="en">Stability of Denture Base Resin</title><author xml:id="author-0000" role="corresp"><persName><forename type="first">Rafael Leonardo Xediek</forename><surname>Consani</surname></persName><email>rconsani@fop.unicamp.br</email><affiliation>Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil<address><country key="BR"></country></address></affiliation><affiliation>Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil===</affiliation></author><author xml:id="author-0001"><persName><forename type="first">Marcelo Ferraz</forename><surname>Mesquita</surname></persName><affiliation>Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil<address><country key="BR"></country></address></affiliation></author><author xml:id="author-0002"><persName><forename type="first">Lourenço Correr</forename><surname>Sobrinho</surname></persName><affiliation>Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil<address><country key="BR"></country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">Mario Alexandre Coelho</forename><surname>Sinhoreti</surname></persName><affiliation>Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil<address><country key="BR"></country></address></affiliation></author><idno type="istex">A5CE8E1FEF33E9823401AB7120089E0AA5EE1B91</idno><idno type="ark">ark:/67375/WNG-W0Z5XT37-9</idno><idno type="DOI">10.1002/app.31713</idno><idno type="unit">APP31713</idno><idno type="toTypesetVersion">file:APP.APP31713.pdf</idno></analytic><monogr><title level="j" type="main">Journal of Applied Polymer Science</title><title level="j" type="alt">JOURNAL OF APPLIED POLYMER SCIENCE</title><idno type="pISSN">0021-8995</idno><idno type="eISSN">1097-4628</idno><idno type="book-DOI">10.1002/(ISSN)1097-4628</idno><idno type="book-part-DOI">10.1002/app.v116:3</idno><idno type="product">APP</idno><imprint><biblScope unit="vol">116</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="1467">1467</biblScope><biblScope unit="page" to="1474">1474</biblScope><biblScope unit="page-count">8</biblScope><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2010-05-05"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract xml:lang="en" style="main"><head>Abstract</head><p>This study evaluated the dimensional stability of the poly‐methylmethacrylate (PMMA) denture bases under the effect of different metallic flask closure techniques (FCT) and investment materials (IM). Sixty stone cast maxillary‐wax base plate sets were randomly assigned to six groups (<hi rend="italic">n</hi> = 10) for the following treatments: 1 and 4—stone or silicone investments and flask closure with clamp; 2 and 5—stone or silicone investments and flask closure with RS system; 3 and 6—stone or silicone investments and flask closure with screws. PMMA denture bases were polymerized in a water bath at 74°C for 9 h. PMMA base‐stone cast sets were sectioned at regions (R) of the canines, first molars, and posterior palatal zone. Gap discrepancies were measured at five points: right and left ridge crests, palatal midline, and right and left marginal limits of the flanges. An optical micrometer with accuracy of 0.0005 mm was used for measurement purposes. Data were submitted to ANOVA and Tukey's test (α = 0.05). Silicone showed an adaptation mean (0.177 mm) significantly different when compared with stone (0.207 mm). The RS system presented a statistically different adaptation mean (0.166 mm) in relation to the traditional clamp (0.200 mm) and flask with screws (0.211 mm). Adaptation values for the regions of the canines (0.141 mm), first molars (0.185 mm), and posterior palatal (0.250 mm) were statistically different. For all flask closure techniques, better adaptation was shown with the RS system and silicone investment. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010</p></abstract><textClass><keywords xml:lang="en"><term xml:id="kwd1">dental polymers</term><term xml:id="kwd2">resins</term><term xml:id="kwd3">silicones</term><term xml:id="kwd4">monomers</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/A5CE8E1FEF33E9823401AB7120089E0AA5EE1B91/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"><header><publicationMeta level="product"><publisherInfo><publisherName>Wiley Subscription Services, Inc., A Wiley Company</publisherName><publisherLoc>Hoboken</publisherLoc></publisherInfo><doi registered="yes">10.1002/(ISSN)1097-4628</doi><issn type="print">0021-8995</issn><issn type="electronic">1097-4628</issn><idGroup><id type="product" value="APP"></id></idGroup><titleGroup><title type="main" xml:lang="en" sort="JOURNAL OF APPLIED POLYMER SCIENCE">Journal of Applied Polymer Science</title><title type="short">J. 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Sci.</title></titleGroup></publicationMeta><publicationMeta level="part" position="30"><doi origin="wiley" registered="yes">10.1002/app.v116:3</doi><numberingGroup><numbering type="journalVolume" number="116">116</numbering><numbering type="journalIssue">3</numbering></numberingGroup><coverDate startDate="2010-05-05">5 May 2010</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="155" status="forIssue"><doi origin="wiley" registered="yes">10.1002/app.31713</doi><idGroup><id type="unit" value="APP31713"></id></idGroup><countGroup><count type="pageTotal" number="8"></count></countGroup><copyright ownership="publisher">Copyright © 2010 Wiley Periodicals, Inc.</copyright><eventGroup><event type="manuscriptReceived" date="2008-08-21"></event><event type="manuscriptAccepted" date="2009-10-17"></event><event type="publishedOnlineEarlyUnpaginated" date="2010-01-04"></event><event type="firstOnline" date="2010-01-04"></event><event type="publishedOnlineFinalForm" date="2010-01-20"></event><event type="xmlConverted" agent="Converter:JWSART34_TO_WML3G version:2.3.2 mode:FullText source:FullText result:FullText" date="2010-03-05"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:4.0.1" date="2014-03-24"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-23"></event></eventGroup><numberingGroup><numbering type="pageFirst">1467</numbering><numbering type="pageLast">1474</numbering></numberingGroup><correspondenceTo>Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil===</correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:APP.APP31713.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="figureTotal" number="3"></count><count type="tableTotal" number="6"></count><count type="referenceTotal" number="44"></count><count type="wordTotal" number="5426"></count></countGroup><titleGroup><title type="main" xml:lang="en">Effect of metallic flask closure and investment materials on the stability of the denture base resin</title><title type="short" xml:lang="en">Stability of Denture Base Resin</title></titleGroup><creators><creator xml:id="au1" creatorRole="author" affiliationRef="#af1" corresponding="yes"><personName><givenNames>Rafael Leonardo Xediek</givenNames><familyName>Consani</familyName></personName><contactDetails><email>rconsani@fop.unicamp.br</email></contactDetails></creator><creator xml:id="au2" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Marcelo Ferraz</givenNames><familyName>Mesquita</familyName></personName></creator><creator xml:id="au3" creatorRole="author" affiliationRef="#af2"><personName><givenNames>Lourenço Correr</givenNames><familyName>Sobrinho</familyName></personName></creator><creator xml:id="au4" creatorRole="author" affiliationRef="#af2"><personName><givenNames>Mario Alexandre Coelho</givenNames><familyName>Sinhoreti</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="af1" countryCode="BR" type="organization"><unparsedAffiliation>Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</unparsedAffiliation></affiliation><affiliation xml:id="af2" countryCode="BR" type="organization"><unparsedAffiliation>Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en" type="author"><keyword xml:id="kwd1">dental polymers</keyword><keyword xml:id="kwd2">resins</keyword><keyword xml:id="kwd3">silicones</keyword><keyword xml:id="kwd4">monomers</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Abstract</title><p>This study evaluated the dimensional stability of the poly‐methylmethacrylate (PMMA) denture bases under the effect of different metallic flask closure techniques (FCT) and investment materials (IM). Sixty stone cast maxillary‐wax base plate sets were randomly assigned to six groups (<i>n</i> = 10) for the following treatments: 1 and 4—stone or silicone investments and flask closure with clamp; 2 and 5—stone or silicone investments and flask closure with RS system; 3 and 6—stone or silicone investments and flask closure with screws. PMMA denture bases were polymerized in a water bath at 74°C for 9 h. PMMA base‐stone cast sets were sectioned at regions (R) of the canines, first molars, and posterior palatal zone. Gap discrepancies were measured at five points: right and left ridge crests, palatal midline, and right and left marginal limits of the flanges. An optical micrometer with accuracy of 0.0005 mm was used for measurement purposes. Data were submitted to ANOVA and Tukey's test (α = 0.05). Silicone showed an adaptation mean (0.177 mm) significantly different when compared with stone (0.207 mm). The RS system presented a statistically different adaptation mean (0.166 mm) in relation to the traditional clamp (0.200 mm) and flask with screws (0.211 mm). Adaptation values for the regions of the canines (0.141 mm), first molars (0.185 mm), and posterior palatal (0.250 mm) were statistically different. For all flask closure techniques, better adaptation was shown with the RS system and silicone investment. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Effect of metallic flask closure and investment materials on the stability of the denture base resin</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Stability of Denture Base Resin</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Effect of metallic flask closure and investment materials on the stability of the denture base resin</title></titleInfo><name type="personal"><namePart type="given">Rafael Leonardo Xediek</namePart><namePart type="family">Consani</namePart><affiliation>Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</affiliation><affiliation>E-mail: rconsani@fop.unicamp.br</affiliation><affiliation>Correspondence address: Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil===</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Marcelo Ferraz</namePart><namePart type="family">Mesquita</namePart><affiliation>Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Lourenço Correr</namePart><namePart type="family">Sobrinho</namePart><affiliation>Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, Brazil</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Mario Alexandre Coelho</namePart><namePart type="family">Sinhoreti</namePart><affiliation>Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, CEP‐13414‐903 SP, 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>Wiley Subscription Services, Inc., A Wiley Company</publisher><place><placeTerm type="text">Hoboken</placeTerm></place><dateIssued encoding="w3cdtf">2010-05-05</dateIssued><dateCaptured encoding="w3cdtf">2008-08-21</dateCaptured><dateValid encoding="w3cdtf">2009-10-17</dateValid><copyrightDate encoding="w3cdtf">2010</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><extent unit="figures">3</extent><extent unit="tables">6</extent><extent unit="references">44</extent><extent unit="words">5426</extent></physicalDescription><abstract lang="en">This study evaluated the dimensional stability of the poly‐methylmethacrylate (PMMA) denture bases under the effect of different metallic flask closure techniques (FCT) and investment materials (IM). Sixty stone cast maxillary‐wax base plate sets were randomly assigned to six groups (n = 10) for the following treatments: 1 and 4—stone or silicone investments and flask closure with clamp; 2 and 5—stone or silicone investments and flask closure with RS system; 3 and 6—stone or silicone investments and flask closure with screws. PMMA denture bases were polymerized in a water bath at 74°C for 9 h. PMMA base‐stone cast sets were sectioned at regions (R) of the canines, first molars, and posterior palatal zone. Gap discrepancies were measured at five points: right and left ridge crests, palatal midline, and right and left marginal limits of the flanges. An optical micrometer with accuracy of 0.0005 mm was used for measurement purposes. Data were submitted to ANOVA and Tukey's test (α = 0.05). Silicone showed an adaptation mean (0.177 mm) significantly different when compared with stone (0.207 mm). The RS system presented a statistically different adaptation mean (0.166 mm) in relation to the traditional clamp (0.200 mm) and flask with screws (0.211 mm). Adaptation values for the regions of the canines (0.141 mm), first molars (0.185 mm), and posterior palatal (0.250 mm) were statistically different. For all flask closure techniques, better adaptation was shown with the RS system and silicone investment. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010</abstract><subject lang="en"><genre>keywords</genre><topic>dental polymers</topic><topic>resins</topic><topic>silicones</topic><topic>monomers</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Applied Polymer Science</title></titleInfo><titleInfo type="abbreviated"><title>J. Appl. Polym. 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