Accuracy of Implant Impressions with Different Impression Coping Types and Shapes
Identifieur interne : 006703 ( Istex/Corpus ); précédent : 006702; suivant : 006704Accuracy of Implant Impressions with Different Impression Coping Types and Shapes
Auteurs : Nayereh Rashidan ; Marzieh Alikhasi ; Samad Samadizadeh ; Elahe Beyabanaki ; Mohammad Javad KharazifardSource :
- Clinical Implant Dentistry and Related Research [ 1523-0899 ] ; 2012-04.
English descriptors
- KwdEn :
- Acrylic resin, Acrylic resin bars, Acrylic resin models, Analogue, Better implant component, Certain methods, Clinical implant dentistry, Conical, Conical copings, Conical impression copings, Conical transfer copings, Coping, Custom trays, Dent, Dental research center, Different implant systems, Different impression, Different shapes, Direct impression, Direct impression technique, Direct technique, Elastomeric impression materials, Heraeus kulzer gmbh, Implant, Implant analogue, Implant analogues, Implant components, Implant dent, Implant impressions, Implant position, Implant replica heads, Implant system, Implant systems, Implantium, Implantium implant system, Implantium system, Impression accuracy, Impression copings, Impression material, Impression materials, Impression technique, Impression techniques, Impression tray, Impression trays, Inaccuracy, Indentation depth, Indirect impression techniques, Indirect technique, Indirect techniques, Internal connection, Internal connection implants, Less inaccuracy, Linear displacement, Marzieh alikhasi, Master models, Maxillofac, Medical sciences, Nobel biocare, Oral maxillofac implants, Osseointegrated implants, Permanent deformation, Polyether impression material, Positional accuracy, Prosthesis, Prosthet, Prosthet dent, Reference acrylic resin models, Reference point, Resin models, Rotational displacement, Square copings, Square impression, Square transfer copings, Statistical difference, Stiff impression material, Tehran, Tehran university, Transfer copings, Transfer impressions, Transfer techniques, Whole dimensions.
- Teeft :
- Acrylic resin, Acrylic resin bars, Acrylic resin models, Analogue, Better implant component, Certain methods, Clinical implant dentistry, Conical, Conical copings, Conical impression copings, Conical transfer copings, Coping, Custom trays, Dent, Dental research center, Different implant systems, Different impression, Different shapes, Direct impression, Direct impression technique, Direct technique, Elastomeric impression materials, Heraeus kulzer gmbh, Implant, Implant analogue, Implant analogues, Implant components, Implant dent, Implant impressions, Implant position, Implant replica heads, Implant system, Implant systems, Implantium, Implantium implant system, Implantium system, Impression accuracy, Impression copings, Impression material, Impression materials, Impression technique, Impression techniques, Impression tray, Impression trays, Inaccuracy, Indentation depth, Indirect impression techniques, Indirect technique, Indirect techniques, Internal connection, Internal connection implants, Less inaccuracy, Linear displacement, Marzieh alikhasi, Master models, Maxillofac, Medical sciences, Nobel biocare, Oral maxillofac implants, Osseointegrated implants, Permanent deformation, Polyether impression material, Positional accuracy, Prosthesis, Prosthet, Prosthet dent, Reference acrylic resin models, Reference point, Resin models, Rotational displacement, Square copings, Square impression, Square transfer copings, Statistical difference, Stiff impression material, Tehran, Tehran university, Transfer copings, Transfer impressions, Transfer techniques, Whole dimensions.
Abstract
Background: Accurate recording of implant location is required so that definitive restorations are properly supported and do not place additional stresses on the implants. Movement of impression copings inside the impression material using an open‐tray or close‐tray impression technique during clinical and laboratory phases may cause inaccuracy in transferring the three‐dimensional spatial orientation of implants intraorally to the definitive cast. Consequently, the restoration may require corrective procedures.
Url:
DOI: 10.1111/j.1708-8208.2009.00241.x
Links to Exploration step
ISTEX:CEFCF010D409DC92208B82B029EC91EC0CC0FD89Le document en format XML
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Movement of impression copings inside the impression material using an open‐tray or close‐tray impression technique during clinical and laboratory phases may cause inaccuracy in transferring the three‐dimensional spatial orientation of implants intraorally to the definitive cast. Consequently, the restoration may require corrective procedures.</div></front></TEI><istex><corpusName>wiley</corpusName><keywords><teeft><json:string>implant</json:string><json:string>impression copings</json:string><json:string>impression material</json:string><json:string>tehran</json:string><json:string>prosthet</json:string><json:string>conical</json:string><json:string>prosthet dent</json:string><json:string>implantium</json:string><json:string>impression techniques</json:string><json:string>maxillofac</json:string><json:string>oral maxillofac implants</json:string><json:string>prosthesis</json:string><json:string>medical sciences</json:string><json:string>tehran university</json:string><json:string>impression technique</json:string><json:string>implant system</json:string><json:string>conical impression copings</json:string><json:string>implant systems</json:string><json:string>dent</json:string><json:string>indirect technique</json:string><json:string>impression 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University of Medical Sciences, Tehran, Iran;</json:string></affiliations></json:item><json:item><name>Marzieh Alikhasi DDS, MS</name><affiliations><json:string>assistant professor, Prosthodontics and Dental Research Center, Tehran University of Medical Sciences, Tehran, Iran;</json:string><json:string>E-mail: m_alikhasi@yahoo.com</json:string></affiliations></json:item><json:item><name>Samad Samadizadeh DDS</name><affiliations><json:string>private practice, graduated from Tehran University of Medical Sciences, Tehran, Iran;</json:string></affiliations></json:item><json:item><name>Elahe Beyabanaki</name><affiliations><json:string>dental senior student, Department of Fixed Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran;</json:string></affiliations></json:item><json:item><name>Mohammad Javad Kharazifard DDS, PhD</name><affiliations><json:string>statistics consultant, Department of Statistics, Tehran University of Medical Sciences, Tehran, Iran</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>impression coping</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>impression technique</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>polyether impression material</value></json:item></subject><articleId><json:string>CID241</json:string></articleId><arkIstex>ark:/67375/WNG-XXJKVZ4D-4</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Background: Accurate recording of implant location is required so that definitive restorations are properly supported and do not place additional stresses on the implants. Movement of impression copings inside the impression material using an open‐tray or close‐tray impression technique during clinical and laboratory phases may cause inaccuracy in transferring the three‐dimensional spatial orientation of implants intraorally to the definitive cast. Consequently, the restoration may require corrective procedures.</abstract><qualityIndicators><refBibsNative>true</refBibsNative><abstractWordCount>67</abstractWordCount><abstractCharCount>517</abstractCharCount><keywordCount>3</keywordCount><score>6.653</score><pdfWordCount>3849</pdfWordCount><pdfCharCount>25394</pdfCharCount><pdfVersion>1.3</pdfVersion><pdfPageCount>8</pdfPageCount><pdfPageSize>585 x 783 pts</pdfPageSize></qualityIndicators><title>Accuracy of Implant Impressions with Different Impression Coping Types and Shapes</title><pmid><json:string>19804420</json:string></pmid><genre><json:string>article</json:string></genre><host><title>Clinical Implant Dentistry and Related 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MS</roleName></persName><affiliation>Associate professor, Department of Fixed Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran;</affiliation></author><author xml:id="author-0001" role="corresp"><persName><forename type="first">Marzieh</forename><surname>Alikhasi</surname><roleName type="degree">DDS, MS</roleName></persName><affiliation>assistant professor, Prosthodontics and Dental Research Center, Tehran University of Medical Sciences, Tehran, Iran;</affiliation><affiliation>Marzieh Alikhasi, DDS, MS, Department of Prosthodontics and Dental Research Center, Tehran University of Medical Sciences, Tehran, 141555583, Iran; e‐mail: m_alikhasi@yahoo.com, malikhasi@razi.tums.ac.ir</affiliation></author><author xml:id="author-0002"><persName><forename type="first">Samad</forename><surname>Samadizadeh</surname><roleName type="degree">DDS</roleName></persName><affiliation>private practice, graduated from Tehran University of Medical Sciences, Tehran, Iran;</affiliation></author><author xml:id="author-0003"><persName><forename type="first">Elahe</forename><surname>Beyabanaki</surname></persName><affiliation>dental senior student, Department of Fixed Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran;</affiliation></author><author xml:id="author-0004"><persName><forename type="first">Mohammad Javad</forename><surname>Kharazifard</surname><roleName type="degree">DDS, PhD</roleName></persName><affiliation>statistics consultant, Department of Statistics, Tehran University of Medical Sciences, Tehran, Iran</affiliation></author><idno type="istex">CEFCF010D409DC92208B82B029EC91EC0CC0FD89</idno><idno type="ark">ark:/67375/WNG-XXJKVZ4D-4</idno><idno type="DOI">10.1111/j.1708-8208.2009.00241.x</idno><idno type="unit">CID241</idno><idno type="toTypesetVersion">file:CID.CID241.pdf</idno></analytic><monogr><title level="j" type="main">Clinical Implant Dentistry and Related Research</title><title level="j" type="alt">CLINICAL IMPLANT DENTISTRY RELATED RESEARCH</title><idno type="pISSN">1523-0899</idno><idno type="eISSN">1708-8208</idno><idno type="book-DOI">10.1111/(ISSN)1708-8208</idno><idno type="book-part-DOI">10.1111/cid.2012.14.issue-2</idno><idno type="product">CID</idno><idno type="publisherDivision">ST</idno><imprint><biblScope unit="vol">14</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="218">218</biblScope><biblScope unit="page" to="225">225</biblScope><biblScope unit="page-count">8</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2012-04"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract xml:lang="en" style="main"><head>ABSTRACT</head><p><hi rend="bold">Background:</hi> Accurate recording of implant location is required so that definitive restorations are properly supported and do not place additional stresses on the implants. Movement of impression copings inside the impression material using an open‐tray or close‐tray impression technique during clinical and laboratory phases may cause inaccuracy in transferring the three‐dimensional spatial orientation of implants intraorally to the definitive cast. Consequently, the restoration may require corrective procedures.</p><p><hi rend="bold">Aim:</hi> This in vitro study compared the accuracy of two different impression techniques with two different impression coping shapes using polyether impression material to obtain precise definitive casts.</p><p><hi rend="bold">Materials and Methods:</hi> Two reference acrylic resin models (Technovits 4000, Heraeus Kulzer GmbH & Co., Wehrheim, Germany) with five internal connection implants having different shapes of impression copings (Implantium [Dentium, Seoul, South Korea] and Replace Select [Nobel Biocare AB, Göteborg, Sweden]) were fabricated. Twenty medium‐consistency polyether impressions of these models were made with square and conical impression copings of each system using open‐tray and close‐tray techniques. Matching implant replicas were screwed into the impression copings in the impressions. Impressions were poured with type IV stone, and the positional accuracy of the implant replica heads in x‐, y‐, and z‐axes (represented in [Δr]) and also rotational displacement (ΔΘ) were evaluated using a coordinate measuring machine (Mistral, DEA Brown&Sharpe, Grugliasco, Italy). These measurements (linear and rotational displacements) were compared with the measurements calculated on the reference resin models that served as control, and data were analyzed with a two‐way analysis of variance at α = 0.05.</p><p><hi rend="bold">Results:</hi> Less inaccuracy occurred in less retentive shape impression copings (Replace Select) compared with the more retentive one (Implantium) (<hi rend="italic">p</hi><hi rend="subscript">r</hi> < .001 and <hi rend="italic">p</hi><hi rend="subscript">Θ</hi> < .001), but there was no significant difference between direct and indirect impression techniques (<hi rend="italic">p</hi><hi rend="subscript">r</hi> and <hi rend="italic">p</hi><hi rend="subscript">Θ</hi> > .05).</p><p><hi rend="bold">Conclusion:</hi> The impression coping shape had more impact on impression inaccuracy than impression technique did. Understanding of the magnitude and variability of distortion when employing certain impression‐making methods and impression coping shapes helps the clinician to select a better implant component and impression technique.</p></abstract><textClass><keywords xml:lang="en"><term xml:id="k1">impression coping</term><term xml:id="k2">impression technique</term><term xml:id="k3">polyether impression material</term></keywords><keywords rend="tocHeading1"><term>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/CEFCF010D409DC92208B82B029EC91EC0CC0FD89/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>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1708-8208</doi><issn type="print">1523-0899</issn><issn type="electronic">1708-8208</issn><idGroup><id type="product" value="CID"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="CLINICAL IMPLANT DENTISTRY RELATED RESEARCH">Clinical Implant Dentistry and Related Research</title></titleGroup></publicationMeta><publicationMeta level="part" position="04102"><doi origin="wiley">10.1111/cid.2012.14.issue-2</doi><numberingGroup><numbering type="journalVolume" number="14">14</numbering><numbering type="journalIssue" number="2">2</numbering></numberingGroup><coverDate startDate="2012-04">April 2012</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="6" status="forIssue"><doi origin="wiley">10.1111/j.1708-8208.2009.00241.x</doi><idGroup><id type="unit" value="CID241"></id></idGroup><countGroup><count type="pageTotal" number="8"></count></countGroup><titleGroup><title type="tocHeading1">ARTICLES</title></titleGroup><copyright>© 2009 Wiley Periodicals, Inc.</copyright><eventGroup><event type="firstOnline" date="2009-10-05"></event><event type="publishedOnlineAcceptedOrEarlyUnpaginated" date="2009-10-05"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:3.1.3 standalone mode:FullText" date="2012-03-22"></event><event type="publishedOnlineFinalForm" date="2012-03-22"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-15"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.3.4 mode:FullText" date="2015-02-25"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="218">218</numbering><numbering type="pageLast" number="225">225</numbering></numberingGroup><correspondenceTo>Marzieh Alikhasi, DDS, MS, Department of Prosthodontics and Dental Research Center, Tehran University of Medical Sciences, Tehran, 141555583, Iran; e‐mail: <email>m_alikhasi@yahoo.com</email>, <email>malikhasi@razi.tums.ac.ir</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:CID.CID241.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="figureTotal" number="3"></count><count type="tableTotal" number="1"></count><count type="formulaTotal" number="0"></count><count type="referenceTotal" number="28"></count><count type="wordTotal" number="4344"></count><count type="linksPubMed" number="0"></count><count type="linksCrossRef" number="0"></count></countGroup><titleGroup><title type="main">Accuracy of Implant Impressions with Different Impression Coping Types and Shapes</title><title type="shortAuthors">Clinical Implant Dentistry and Related Research, Volume *, Number *, 2009</title><title type="short">Accuracy of Implant Impressions</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>Nayereh</givenNames><familyName>Rashidan</familyName><degrees>DDS, MS</degrees></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2" corresponding="yes"><personName><givenNames>Marzieh</givenNames><familyName>Alikhasi</familyName><degrees>DDS, MS</degrees></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a3"><personName><givenNames>Samad</givenNames><familyName>Samadizadeh</familyName><degrees>DDS</degrees></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a4"><personName><givenNames>Elahe</givenNames><familyName>Beyabanaki</familyName></personName></creator><creator creatorRole="author" xml:id="cr5" affiliationRef="#a5"><personName><givenNames>Mohammad Javad</givenNames><familyName>Kharazifard</familyName><degrees>DDS, PhD</degrees></personName></creator></creators><affiliationGroup><affiliation xml:id="a1"><unparsedAffiliation>Associate professor, Department of Fixed Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran;</unparsedAffiliation></affiliation><affiliation xml:id="a2"><unparsedAffiliation>assistant professor, Prosthodontics and Dental Research Center, Tehran University of Medical Sciences, Tehran, Iran;</unparsedAffiliation></affiliation><affiliation xml:id="a3"><unparsedAffiliation>private practice, graduated from Tehran University of Medical Sciences, Tehran, Iran;</unparsedAffiliation></affiliation><affiliation xml:id="a4"><unparsedAffiliation>dental senior student, Department of Fixed Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran;</unparsedAffiliation></affiliation><affiliation xml:id="a5"><unparsedAffiliation>statistics consultant, Department of Statistics, Tehran University of Medical Sciences, Tehran, Iran</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">impression coping</keyword><keyword xml:id="k2">impression technique</keyword><keyword xml:id="k3">polyether impression material</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">ABSTRACT</title><p><b>Background:</b> Accurate recording of implant location is required so that definitive restorations are properly supported and do not place additional stresses on the implants. Movement of impression copings inside the impression material using an open‐tray or close‐tray impression technique during clinical and laboratory phases may cause inaccuracy in transferring the three‐dimensional spatial orientation of implants intraorally to the definitive cast. Consequently, the restoration may require corrective procedures.</p><p><b>Aim:</b> This in vitro study compared the accuracy of two different impression techniques with two different impression coping shapes using polyether impression material to obtain precise definitive casts.</p><p><b>Materials and Methods:</b> Two reference acrylic resin models (Technovits 4000, Heraeus Kulzer GmbH & Co., Wehrheim, Germany) with five internal connection implants having different shapes of impression copings (Implantium [Dentium, Seoul, South Korea] and Replace Select [Nobel Biocare AB, Göteborg, Sweden]) were fabricated. Twenty medium‐consistency polyether impressions of these models were made with square and conical impression copings of each system using open‐tray and close‐tray techniques. Matching implant replicas were screwed into the impression copings in the impressions. Impressions were poured with type IV stone, and the positional accuracy of the implant replica heads in x‐, y‐, and z‐axes (represented in [Δr]) and also rotational displacement (ΔΘ) were evaluated using a coordinate measuring machine (Mistral, DEA Brown&Sharpe, Grugliasco, Italy). These measurements (linear and rotational displacements) were compared with the measurements calculated on the reference resin models that served as control, and data were analyzed with a two‐way analysis of variance at α = 0.05.</p><p><b>Results:</b> Less inaccuracy occurred in less retentive shape impression copings (Replace Select) compared with the more retentive one (Implantium) (<i>p</i><sub>r</sub> < .001 and <i>p</i><sub>Θ</sub> < .001), but there was no significant difference between direct and indirect impression techniques (<i>p</i><sub>r</sub> and <i>p</i><sub>Θ</sub> > .05).</p><p><b>Conclusion:</b> The impression coping shape had more impact on impression inaccuracy than impression technique did. Understanding of the magnitude and variability of distortion when employing certain impression‐making methods and impression coping shapes helps the clinician to select a better implant component and impression technique.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Accuracy of Implant Impressions with Different Impression Coping Types and Shapes</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Accuracy of Implant Impressions</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Accuracy of Implant Impressions with Different Impression Coping Types and Shapes</title></titleInfo><name type="personal"><namePart type="given">Nayereh</namePart><namePart type="family">Rashidan</namePart><namePart type="termsOfAddress">DDS, MS</namePart><affiliation>Associate professor, Department of Fixed Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Marzieh</namePart><namePart type="family">Alikhasi</namePart><namePart type="termsOfAddress">DDS, MS</namePart><affiliation>assistant professor, Prosthodontics and Dental Research Center, Tehran University of Medical Sciences, Tehran, Iran;</affiliation><affiliation>E-mail: m_alikhasi@yahoo.com</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Samad</namePart><namePart type="family">Samadizadeh</namePart><namePart type="termsOfAddress">DDS</namePart><affiliation>private practice, graduated from Tehran University of Medical Sciences, Tehran, Iran;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Elahe</namePart><namePart type="family">Beyabanaki</namePart><affiliation>dental senior student, Department of Fixed Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Mohammad Javad</namePart><namePart type="family">Kharazifard</namePart><namePart type="termsOfAddress">DDS, PhD</namePart><affiliation>statistics consultant, Department of Statistics, Tehran University of Medical Sciences, Tehran, Iran</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><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2012-04</dateIssued><copyrightDate encoding="w3cdtf">2012</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">1</extent><extent unit="formulas">0</extent><extent unit="references">28</extent><extent unit="linksCrossRef">0</extent><extent unit="words">4344</extent></physicalDescription><abstract>Background: Accurate recording of implant location is required so that definitive restorations are properly supported and do not place additional stresses on the implants. Movement of impression copings inside the impression material using an open‐tray or close‐tray impression technique during clinical and laboratory phases may cause inaccuracy in transferring the three‐dimensional spatial orientation of implants intraorally to the definitive cast. Consequently, the restoration may require corrective procedures.</abstract><abstract>Aim: This in vitro study compared the accuracy of two different impression techniques with two different impression coping shapes using polyether impression material to obtain precise definitive casts.</abstract><abstract>Materials and Methods: Two reference acrylic resin models (Technovits 4000, Heraeus Kulzer GmbH & Co., Wehrheim, Germany) with five internal connection implants having different shapes of impression copings (Implantium [Dentium, Seoul, South Korea] and Replace Select [Nobel Biocare AB, Göteborg, Sweden]) were fabricated. Twenty medium‐consistency polyether impressions of these models were made with square and conical impression copings of each system using open‐tray and close‐tray techniques. Matching implant replicas were screwed into the impression copings in the impressions. Impressions were poured with type IV stone, and the positional accuracy of the implant replica heads in x‐, y‐, and z‐axes (represented in [Δr]) and also rotational displacement (ΔΘ) were evaluated using a coordinate measuring machine (Mistral, DEA Brown&Sharpe, Grugliasco, Italy). These measurements (linear and rotational displacements) were compared with the measurements calculated on the reference resin models that served as control, and data were analyzed with a two‐way analysis of variance at α = 0.05.</abstract><abstract>Results: Less inaccuracy occurred in less retentive shape impression copings (Replace Select) compared with the more retentive one (Implantium) (pr < .001 and pΘ < .001), but there was no significant difference between direct and indirect impression techniques (pr and pΘ > .05).</abstract><abstract>Conclusion: The impression coping shape had more impact on impression inaccuracy than impression technique did. Understanding of the magnitude and variability of distortion when employing certain impression‐making methods and impression coping shapes helps the clinician to select a better implant component and impression technique.</abstract><subject lang="en"><genre>keywords</genre><topic>impression coping</topic><topic>impression technique</topic><topic>polyether impression material</topic></subject><relatedItem type="host"><titleInfo><title>Clinical Implant Dentistry and Related Research</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><identifier type="ISSN">1523-0899</identifier><identifier type="eISSN">1708-8208</identifier><identifier type="DOI">10.1111/(ISSN)1708-8208</identifier><identifier type="PublisherID">CID</identifier><part><date>2012</date><detail type="volume"><caption>vol.</caption><number>14</number></detail><detail type="issue"><caption>no.</caption><number>2</number></detail><extent unit="pages"><start>218</start><end>225</end><total>8</total></extent></part></relatedItem><identifier type="istex">CEFCF010D409DC92208B82B029EC91EC0CC0FD89</identifier><identifier type="ark">ark:/67375/WNG-XXJKVZ4D-4</identifier><identifier type="DOI">10.1111/j.1708-8208.2009.00241.x</identifier><identifier type="ArticleID">CID241</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2009 Wiley Periodicals, Inc.</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><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/CEFCF010D409DC92208B82B029EC91EC0CC0FD89/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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