A comparative analysis of the accuracy of implant master casts fabricated from two different transfer impression techniques
Identifieur interne : 000721 ( Pmc/Curation ); précédent : 000720; suivant : 000722A comparative analysis of the accuracy of implant master casts fabricated from two different transfer impression techniques
Auteurs : Rupali Patil [Inde] ; Pankaj Kadam [Inde] ; Chetan Oswal [Inde] ; Seema Patil [Inde] ; Shweta Jajoo [Inde] ; Arati Gachake [Inde]Source :
- Journal of International Society of Preventive & Community Dentistry [ 2231-0762 ] ; 2016.
Abstract
This study evaluated and compared two impression techniques in terms of their dimensional accuracies to reproduce implant positions on working casts.
A master model was designed to simulate a clinical situation. Impressions were made using four techniques: (1) Stock open tray (SOT) technique; (2) stock closed tray (SCT) technique; (3) custom open tray (COT) technique; and (3) custom closed tray (CCT) technique. Reference points on the hexagonal silhouette of the implant on master model and onto the analogs of the obtained master casts were compared after using the four impression techniques. Measurements were made using an optical microscope, capable of recording under 50x magnifications. The means and standard deviations of all the groups and subgroups were calculated and statically analyzed using analysis of variance (ANOVA) and Tukey's test.
The open tray impressions showed significantly less variation from the master model and all the techniques studied were comparable.
All the techniques studied shown some distortion. COT showed the most accurate results of all the techniques.
Url:
DOI: 10.4103/2231-0762.178747
PubMed: 27114954
PubMed Central: 4820574
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<series><title level="j">Journal of International Society of Preventive & Community Dentistry</title>
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<front><div type="abstract" xml:lang="en"><sec id="st1"><title>Aim:</title>
<p>This study evaluated and compared two impression techniques in terms of their dimensional accuracies to reproduce implant positions on working casts.</p>
</sec>
<sec id="st2"><title>Materials and Methods:</title>
<p>A master model was designed to simulate a clinical situation. Impressions were made using four techniques: (1) Stock open tray (SOT) technique; (2) stock closed tray (SCT) technique; (3) custom open tray (COT) technique; and (3) custom closed tray (CCT) technique. Reference points on the hexagonal silhouette of the implant on master model and onto the analogs of the obtained master casts were compared after using the four impression techniques. Measurements were made using an optical microscope, capable of recording under 50x magnifications. The means and standard deviations of all the groups and subgroups were calculated and statically analyzed using analysis of variance (ANOVA) and Tukey's test.</p>
</sec>
<sec id="st3"><title>Results:</title>
<p>The open tray impressions showed significantly less variation from the master model and all the techniques studied were comparable.</p>
</sec>
<sec id="st4"><title>Conclusion:</title>
<p>All the techniques studied shown some distortion. COT showed the most accurate results of all the techniques.</p>
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<front><journal-meta><journal-id journal-id-type="nlm-ta">J Int Soc Prev Community Dent</journal-id>
<journal-id journal-id-type="iso-abbrev">J Int Soc Prev Community Dent</journal-id>
<journal-id journal-id-type="publisher-id">JISPCD</journal-id>
<journal-title-group><journal-title>Journal of International Society of Preventive & Community Dentistry</journal-title>
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<issn pub-type="ppub">2231-0762</issn>
<issn pub-type="epub">2250-1002</issn>
<publisher><publisher-name>Medknow Publications & Media Pvt Ltd</publisher-name>
<publisher-loc>India</publisher-loc>
</publisher>
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<article-meta><article-id pub-id-type="pmid">27114954</article-id>
<article-id pub-id-type="pmc">4820574</article-id>
<article-id pub-id-type="publisher-id">JISPCD-6-142</article-id>
<article-id pub-id-type="doi">10.4103/2231-0762.178747</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>A comparative analysis of the accuracy of implant master casts fabricated from two different transfer impression techniques</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Patil</surname>
<given-names>Rupali</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
<xref ref-type="corresp" rid="cor1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Kadam</surname>
<given-names>Pankaj</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Oswal</surname>
<given-names>Chetan</given-names>
</name>
<xref ref-type="aff" rid="aff3">2</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Patil</surname>
<given-names>Seema</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Jajoo</surname>
<given-names>Shweta</given-names>
</name>
<xref ref-type="aff" rid="aff2">1</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Gachake</surname>
<given-names>Arati</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
</contrib-group>
<aff id="aff1">Department of Prosthodontics, Bharati Vidyapeeth Dental College, Pune, Maharashtra, India</aff>
<aff id="aff2"><label>1</label>
Department of Pedodontics, Bharati Vidyapeeth Dental College, Pune, Maharashtra, India</aff>
<aff id="aff3"><label>2</label>
Department of Prosthodontics Private Practitioners, Pune, Maharashtra, India</aff>
<author-notes><corresp id="cor1"><bold>Corresponding author</bold>
(email: <<email xlink:href="dr.rupalipatil7001@gmail.com">dr.rupalipatil7001@gmail.com</email>
>) Dr. Rupali Patil, Department of Prosthodontics, Bharati Vidyapeeth Dental College, Pune, Maharashtra, India.</corresp>
</author-notes>
<pub-date pub-type="ppub"><season>Mar-Apr</season>
<year>2016</year>
</pub-date>
<volume>6</volume>
<issue>2</issue>
<fpage>142</fpage>
<lpage>148</lpage>
<permissions><copyright-statement>Copyright: © Journal of International Society of Preventive and Community Dentistry</copyright-statement>
<copyright-year>2016</copyright-year>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc-sa/3.0"><license-p>This is an open access article distributed under the terms of the Creative Commons Attribution NonCommercial ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non commercially, as long as the author is credited and the new creations are licensed under the identical terms.</license-p>
</license>
</permissions>
<abstract><sec id="st1"><title>Aim:</title>
<p>This study evaluated and compared two impression techniques in terms of their dimensional accuracies to reproduce implant positions on working casts.</p>
</sec>
<sec id="st2"><title>Materials and Methods:</title>
<p>A master model was designed to simulate a clinical situation. Impressions were made using four techniques: (1) Stock open tray (SOT) technique; (2) stock closed tray (SCT) technique; (3) custom open tray (COT) technique; and (3) custom closed tray (CCT) technique. Reference points on the hexagonal silhouette of the implant on master model and onto the analogs of the obtained master casts were compared after using the four impression techniques. Measurements were made using an optical microscope, capable of recording under 50x magnifications. The means and standard deviations of all the groups and subgroups were calculated and statically analyzed using analysis of variance (ANOVA) and Tukey's test.</p>
</sec>
<sec id="st3"><title>Results:</title>
<p>The open tray impressions showed significantly less variation from the master model and all the techniques studied were comparable.</p>
</sec>
<sec id="st4"><title>Conclusion:</title>
<p>All the techniques studied shown some distortion. COT showed the most accurate results of all the techniques.</p>
</sec>
</abstract>
<kwd-group><kwd><italic>Closed tray impressions</italic>
</kwd>
<kwd><italic>custom trays</italic>
</kwd>
<kwd><italic>implants</italic>
</kwd>
<kwd><italic>open tray impression</italic>
</kwd>
<kwd><italic>stock tray</italic>
</kwd>
<kwd><italic>stock tray impressions</italic>
</kwd>
</kwd-group>
</article-meta>
</front>
</pmc>
</record>
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