Effect of Polyvinyl Siloxane Viscosity on Accuracy of Dental Implant Impressions
Identifieur interne : 003074 ( Pmc/Curation ); précédent : 003073; suivant : 003075Effect of Polyvinyl Siloxane Viscosity on Accuracy of Dental Implant Impressions
Auteurs : Ahmad Ghahremanloo [Iran] ; Mahdieh Seifi [Iran] ; Jalil Ghanbarzade [Iran] ; Seyyed Mohammad Abrisham [Iran] ; Rashid Abdolah Javan [Iran]Source :
- Journal of Dentistry (Tehran, Iran) [ 1735-2150 ] ; 2017.
Abstract
The aim of this study was to compare the accuracy of dental implant impressions obtained by a combination of different impression techniques and viscosities of polyvinyl siloxane (PVS).
Four parallel fixtures were placed between mental foramina in a master model of lower dental arch. Three different viscosities (putty/light body, medium body/light body, and monophase: heavy body) and direct and indirect techniques (six groups) were used, and seven impressions were obtained from each group (n=42). To measure the accuracy of impressions, drift, horizontal, and vertical angles of the implants, as well as the hex rotation of the implants in casts were evaluated using a digitizer device (1μm accuracy), in comparison with master arch. Data were analyzed using five-factor two-way ANOVA and Tukey’s post-hoc test.
The accuracy of impressions was assessed and the results showed that direct technique was not significantly different from indirect technique (P>0.05). Also, there were no significant differences between the mentioned viscosities except for the horizontal angle (P=0.006).
Viscosity of impression materials is of high significance for the accuracy of dental impressions.
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PubMed: 28828016
PubMed Central: 5557995
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<author><name sortKey="Ghahremanloo, Ahmad" sort="Ghahremanloo, Ahmad" uniqKey="Ghahremanloo A" first="Ahmad" last="Ghahremanloo">Ahmad Ghahremanloo</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Effect of Polyvinyl Siloxane Viscosity on Accuracy of Dental Implant Impressions</title>
<author><name sortKey="Ghahremanloo, Ahmad" sort="Ghahremanloo, Ahmad" uniqKey="Ghahremanloo A" first="Ahmad" last="Ghahremanloo">Ahmad Ghahremanloo</name>
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<wicri:regionArea>Associate Professor of Prosthodontics Department, Mashhad Dental School, Mashhad University of Medical Sciences, Mashhad</wicri:regionArea>
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<author><name sortKey="Seifi, Mahdieh" sort="Seifi, Mahdieh" uniqKey="Seifi M" first="Mahdieh" last="Seifi">Mahdieh Seifi</name>
<affiliation wicri:level="1"><nlm:aff id="AFF2">Assistant Professor of Prosthodontics Department, Mashhad Dental School, Mashhad University of Medical Sciences, Mashhad, Iran</nlm:aff>
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<wicri:regionArea>Assistant Professor of Prosthodontics Department, Mashhad Dental School, Mashhad University of Medical Sciences, Mashhad</wicri:regionArea>
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<author><name sortKey="Ghanbarzade, Jalil" sort="Ghanbarzade, Jalil" uniqKey="Ghanbarzade J" first="Jalil" last="Ghanbarzade">Jalil Ghanbarzade</name>
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<wicri:regionArea>Associate Professor of Prosthodontics Department, Mashhad Dental School, Mashhad University of Medical Sciences, Mashhad</wicri:regionArea>
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<author><name sortKey="Abrisham, Seyyed Mohammad" sort="Abrisham, Seyyed Mohammad" uniqKey="Abrisham S" first="Seyyed Mohammad" last="Abrisham">Seyyed Mohammad Abrisham</name>
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<wicri:regionArea>Assistant Professor of Prosthodontics Department, Yazd Dental School, Shahid Sadoughi University of Medical Sciences, Yazd</wicri:regionArea>
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<author><name sortKey="Javan, Rashid Abdolah" sort="Javan, Rashid Abdolah" uniqKey="Javan R" first="Rashid Abdolah" last="Javan">Rashid Abdolah Javan</name>
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<series><title level="j">Journal of Dentistry (Tehran, Iran)</title>
<idno type="ISSN">1735-2150</idno>
<idno type="eISSN">2008-2185</idno>
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<front><div type="abstract" xml:lang="en"><sec><title>Objectives:</title>
<p>The aim of this study was to compare the accuracy of dental implant impressions obtained by a combination of different impression techniques and viscosities of polyvinyl siloxane (PVS).</p>
</sec>
<sec><title>Materials and Methods:</title>
<p>Four parallel fixtures were placed between mental foramina in a master model of lower dental arch. Three different viscosities (putty/light body, medium body/light body, and monophase: heavy body) and direct and indirect techniques (six groups) were used, and seven impressions were obtained from each group (n=42). To measure the accuracy of impressions, drift, horizontal, and vertical angles of the implants, as well as the hex rotation of the implants in casts were evaluated using a digitizer device (1μm accuracy), in comparison with master arch. Data were analyzed using five-factor two-way ANOVA and Tukey’s post-hoc test.</p>
</sec>
<sec><title>Results:</title>
<p>The accuracy of impressions was assessed and the results showed that direct technique was not significantly different from indirect technique (P>0.05). Also, there were no significant differences between the mentioned viscosities except for the horizontal angle (P=0.006).</p>
</sec>
<sec><title>Conclusions:</title>
<p>Viscosity of impression materials is of high significance for the accuracy of dental impressions.</p>
</sec>
</div>
</front>
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<pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Dent (Tehran)</journal-id>
<journal-id journal-id-type="iso-abbrev">J Dent (Tehran)</journal-id>
<journal-id journal-id-type="publisher-id">JOD</journal-id>
<journal-id journal-id-type="pmc">JOD</journal-id>
<journal-title-group><journal-title>Journal of Dentistry (Tehran, Iran)</journal-title>
</journal-title-group>
<issn pub-type="ppub">1735-2150</issn>
<issn pub-type="epub">2008-2185</issn>
<publisher><publisher-name>Tehran University of Medical Sciences</publisher-name>
</publisher>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">28828016</article-id>
<article-id pub-id-type="pmc">5557995</article-id>
<article-id pub-id-type="publisher-id">jod-14-40</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>Effect of Polyvinyl Siloxane Viscosity on Accuracy of Dental Implant Impressions</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Ghahremanloo</surname>
<given-names>Ahmad</given-names>
</name>
<xref ref-type="aff" rid="AFF1"><sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Seifi</surname>
<given-names>Mahdieh</given-names>
</name>
<xref ref-type="aff" rid="AFF2"><sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Ghanbarzade</surname>
<given-names>Jalil</given-names>
</name>
<xref ref-type="aff" rid="AFF1"><sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" corresp="yes"><name><surname>Abrisham</surname>
<given-names>Seyyed Mohammad</given-names>
</name>
<xref ref-type="aff" rid="AFF3"><sup>3</sup>
</xref>
<xref ref-type="corresp" rid="C1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Javan</surname>
<given-names>Rashid Abdolah</given-names>
</name>
<xref ref-type="aff" rid="AFF4"><sup>4</sup>
</xref>
</contrib>
<aff id="AFF1"><label>1</label>
Associate Professor of Prosthodontics Department, Mashhad Dental School, Mashhad University of Medical Sciences, Mashhad, Iran</aff>
<aff id="AFF2"><label>2</label>
Assistant Professor of Prosthodontics Department, Mashhad Dental School, Mashhad University of Medical Sciences, Mashhad, Iran</aff>
<aff id="AFF3"><label>3</label>
Assistant Professor of Prosthodontics Department, Yazd Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran</aff>
<aff id="AFF4"><label>4</label>
Statistical Advisor, Mashhad Dental School, Mashhad University of Medical Sciences, Mashhad, Iran</aff>
</contrib-group>
<author-notes><corresp id="C1">Corresponding author: S.M. Abrisham, Department, Yazd Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran <email>abrisham.m@gmail.com</email>
</corresp>
</author-notes>
<pub-date pub-type="ppub"><month>1</month>
<year>2017</year>
</pub-date>
<volume>14</volume>
<issue>1</issue>
<fpage>40</fpage>
<lpage>47</lpage>
<history><date date-type="received"><day>18</day>
<month>9</month>
<year>2016</year>
</date>
<date date-type="accepted"><day>28</day>
<month>12</month>
<year>2016</year>
</date>
</history>
<permissions><copyright-statement>Copyright© Dental Research Center, Tehran University of Medical Sciences</copyright-statement>
<copyright-year>2017</copyright-year>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/3.0/"><license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p>
</license>
</permissions>
<abstract><sec><title>Objectives:</title>
<p>The aim of this study was to compare the accuracy of dental implant impressions obtained by a combination of different impression techniques and viscosities of polyvinyl siloxane (PVS).</p>
</sec>
<sec><title>Materials and Methods:</title>
<p>Four parallel fixtures were placed between mental foramina in a master model of lower dental arch. Three different viscosities (putty/light body, medium body/light body, and monophase: heavy body) and direct and indirect techniques (six groups) were used, and seven impressions were obtained from each group (n=42). To measure the accuracy of impressions, drift, horizontal, and vertical angles of the implants, as well as the hex rotation of the implants in casts were evaluated using a digitizer device (1μm accuracy), in comparison with master arch. Data were analyzed using five-factor two-way ANOVA and Tukey’s post-hoc test.</p>
</sec>
<sec><title>Results:</title>
<p>The accuracy of impressions was assessed and the results showed that direct technique was not significantly different from indirect technique (P>0.05). Also, there were no significant differences between the mentioned viscosities except for the horizontal angle (P=0.006).</p>
</sec>
<sec><title>Conclusions:</title>
<p>Viscosity of impression materials is of high significance for the accuracy of dental impressions.</p>
</sec>
</abstract>
<kwd-group><kwd>Dental Materials</kwd>
<kwd>Dental Implants</kwd>
<kwd>Dental Impression Technique</kwd>
<kwd>Viscosity</kwd>
<kwd>Vinyl Polysiloxane</kwd>
<kwd>Dimensional Measurement Accuracy</kwd>
</kwd-group>
</article-meta>
</front>
</pmc>
</record>
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