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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Assessing fit at the implant-abutment junction with a radiographic device that does not require access to the implant body</title>
<author><name sortKey="Lin, Kevin C" sort="Lin, Kevin C" uniqKey="Lin K" first="Kevin C." last="Lin">Kevin C. Lin</name>
</author>
<author><name sortKey="Wadhwani, Chandur P K" sort="Wadhwani, Chandur P K" uniqKey="Wadhwani C" first="Chandur P. K." last="Wadhwani">Chandur P. K. Wadhwani</name>
</author>
<author><name sortKey="Cheng, Jing" sort="Cheng, Jing" uniqKey="Cheng J" first="Jing" last="Cheng">Jing Cheng</name>
</author>
<author><name sortKey="Sharma, Arun" sort="Sharma, Arun" uniqKey="Sharma A" first="Arun" last="Sharma">Arun Sharma</name>
</author>
<author><name sortKey="Finzen, Frederick" sort="Finzen, Frederick" uniqKey="Finzen F" first="Frederick" last="Finzen">Frederick Finzen</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PMC</idno>
<idno type="pmid">24836280</idno>
<idno type="pmc">5567837</idno>
<idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5567837</idno>
<idno type="RBID">PMC:5567837</idno>
<idno type="doi">10.1016/j.prosdent.2014.03.016</idno>
<date when="2014">2014</date>
<idno type="wicri:Area/Pmc/Corpus">002602</idno>
<idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002602</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Assessing fit at the implant-abutment junction with a radiographic device that does not require access to the implant body</title>
<author><name sortKey="Lin, Kevin C" sort="Lin, Kevin C" uniqKey="Lin K" first="Kevin C." last="Lin">Kevin C. Lin</name>
</author>
<author><name sortKey="Wadhwani, Chandur P K" sort="Wadhwani, Chandur P K" uniqKey="Wadhwani C" first="Chandur P. K." last="Wadhwani">Chandur P. K. Wadhwani</name>
</author>
<author><name sortKey="Cheng, Jing" sort="Cheng, Jing" uniqKey="Cheng J" first="Jing" last="Cheng">Jing Cheng</name>
</author>
<author><name sortKey="Sharma, Arun" sort="Sharma, Arun" uniqKey="Sharma A" first="Arun" last="Sharma">Arun Sharma</name>
</author>
<author><name sortKey="Finzen, Frederick" sort="Finzen, Frederick" uniqKey="Finzen F" first="Frederick" last="Finzen">Frederick Finzen</name>
</author>
</analytic>
<series><title level="j">The Journal of prosthetic dentistry</title>
<idno type="ISSN">0022-3913</idno>
<idno type="eISSN">1097-6841</idno>
<imprint><date when="2014">2014</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass></textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en"><sec id="S1"><title>Statement of problem</title>
<p id="P1">Radiograph paralleling devices provide an excellent means of obtaining orthogonal radiographs for the evaluation of the fit of implant restorations. Unfortunately, the clinical applicability of such devices is a significant issue because access to the implant body must be obtained at each radiographic appointment.</p>
</sec>
<sec id="S2"><title>Purpose</title>
<p id="P2">The purpose of the study was to investigate whether the fit or microgap at the implant-abutment junction could be more accurately and confidently assessed with a novel radiograph paralleling device that did not require access to the implant body once a proper registration index was made.</p>
</sec>
<sec id="S3"><title>Material and methods</title>
<p id="P3">Microgaps of 0, 50, and 100 μm were introduced at the implant-abutment junction of a provisional implant crown in a manikin-typodont assembly. Dental assistants made 54 radiographs (18 per microgap) of the crown with and without a radiograph paralleling device; 9 clinicians then evaluated the standardized radiographs for the presence of misfit. The Cochran-Mantel-Haenszel test and the corresponding odds ratios were used to evaluate the effectiveness of the paralleling device in helping clinicians better assess misfit from the radiographs made.</p>
</sec>
<sec id="S4"><title>Results</title>
<p id="P4">The use of the device led to a higher percentage of accuracy under all conditions (79.0% vs 70.4% at the 0-μm gap, 77.8% vs 16.1% at the 50-μm gap, and 100% vs 92.6% at the 100-μm gap); the improvement was statistically significant at the 50-μm gap (<italic>P</italic>
<.001) and 100-μm gap (<italic>P</italic>
=.049) but not at the 0-μm gap (<italic>P</italic>
=.364). The odds ratio (95% confidence interval) of obtaining correct versus wrong answers with the device compared with without the device was 18.64 (7.94–43.77) at the 50-μm gap and 5.40 (0.25–114.25) at the 100-μm gap.</p>
</sec>
<sec id="S5"><title>Conclusions</title>
<p id="P5">The study indicated that the paralleling device helped the clinician more accurately assess the implant-abutment junction with the 50- and 100-μm gaps.</p>
</sec>
</div>
</front>
</TEI>
<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<pmc-dir>properties manuscript</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-journal-id">0376364</journal-id>
<journal-id journal-id-type="pubmed-jr-id">5208</journal-id>
<journal-id journal-id-type="nlm-ta">J Prosthet Dent</journal-id>
<journal-id journal-id-type="iso-abbrev">J Prosthet Dent</journal-id>
<journal-title-group><journal-title>The Journal of prosthetic dentistry</journal-title>
</journal-title-group>
<issn pub-type="ppub">0022-3913</issn>
<issn pub-type="epub">1097-6841</issn>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">24836280</article-id>
<article-id pub-id-type="pmc">5567837</article-id>
<article-id pub-id-type="doi">10.1016/j.prosdent.2014.03.016</article-id>
<article-id pub-id-type="manuscript">NIHMS895215</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>Assessing fit at the implant-abutment junction with a radiographic device that does not require access to the implant body</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Lin</surname>
<given-names>Kevin C.</given-names>
</name>
<degrees>DDS</degrees>
<xref rid="FN2" ref-type="author-notes">a</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Wadhwani</surname>
<given-names>Chandur P. K.</given-names>
</name>
<degrees>BDS, MSD</degrees>
<xref rid="FN3" ref-type="author-notes">b</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Cheng</surname>
<given-names>Jing</given-names>
</name>
<degrees>MD, MS, PhD</degrees>
<xref rid="FN4" ref-type="author-notes">c</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Sharma</surname>
<given-names>Arun</given-names>
</name>
<degrees>BDS, MSc</degrees>
<xref rid="FN5" ref-type="author-notes">d</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Finzen</surname>
<given-names>Frederick</given-names>
</name>
<degrees>DDS</degrees>
<xref rid="FN6" ref-type="author-notes">e</xref>
</contrib>
<aff id="A1">School of Dentistry, University of Washington, Seattle, Wash; School of Dentistry, University of California San Francisco, San Francisco, Calif</aff>
</contrib-group>
<author-notes><corresp id="FN1">Corresponding author: Dr Kevin C. Lin, 1201 12th Ave, # 11, San Francisco, CA 94122, <email>kevin.kclin@gmail.com</email>
</corresp>
<fn id="FN2"><label>a</label>
<p>Private practice, San Francisco, Calif.</p>
</fn>
<fn id="FN3"><label>b</label>
<p>Affiliate Faculty, Department of Restorative Dentistry, School of Dentistry, University of Washington; Private practice, Bellevue, Wash.</p>
</fn>
<fn id="FN4"><label>c</label>
<p>Associate Professor, School of Dentistry, University of California.</p>
</fn>
<fn id="FN5"><label>d</label>
<p>Health Sciences Clinical Professor, School of Dentistry, University of California.</p>
</fn>
<fn id="FN6"><label>e</label>
<p>Health Sciences Clinical Professor and Division Chair, Prosthodontics, School of Dentistry, University of California.</p>
</fn>
</author-notes>
<pub-date pub-type="nihms-submitted"><day>28</day>
<month>7</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub"><day>14</day>
<month>5</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="ppub"><month>10</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>23</day>
<month>8</month>
<year>2017</year>
</pub-date>
<volume>112</volume>
<issue>4</issue>
<fpage>817</fpage>
<lpage>823</lpage>
<pmc-comment>elocation-id from pubmed: 10.1016/j.prosdent.2014.03.016</pmc-comment>
<abstract><sec id="S1"><title>Statement of problem</title>
<p id="P1">Radiograph paralleling devices provide an excellent means of obtaining orthogonal radiographs for the evaluation of the fit of implant restorations. Unfortunately, the clinical applicability of such devices is a significant issue because access to the implant body must be obtained at each radiographic appointment.</p>
</sec>
<sec id="S2"><title>Purpose</title>
<p id="P2">The purpose of the study was to investigate whether the fit or microgap at the implant-abutment junction could be more accurately and confidently assessed with a novel radiograph paralleling device that did not require access to the implant body once a proper registration index was made.</p>
</sec>
<sec id="S3"><title>Material and methods</title>
<p id="P3">Microgaps of 0, 50, and 100 μm were introduced at the implant-abutment junction of a provisional implant crown in a manikin-typodont assembly. Dental assistants made 54 radiographs (18 per microgap) of the crown with and without a radiograph paralleling device; 9 clinicians then evaluated the standardized radiographs for the presence of misfit. The Cochran-Mantel-Haenszel test and the corresponding odds ratios were used to evaluate the effectiveness of the paralleling device in helping clinicians better assess misfit from the radiographs made.</p>
</sec>
<sec id="S4"><title>Results</title>
<p id="P4">The use of the device led to a higher percentage of accuracy under all conditions (79.0% vs 70.4% at the 0-μm gap, 77.8% vs 16.1% at the 50-μm gap, and 100% vs 92.6% at the 100-μm gap); the improvement was statistically significant at the 50-μm gap (<italic>P</italic>
<.001) and 100-μm gap (<italic>P</italic>
=.049) but not at the 0-μm gap (<italic>P</italic>
=.364). The odds ratio (95% confidence interval) of obtaining correct versus wrong answers with the device compared with without the device was 18.64 (7.94–43.77) at the 50-μm gap and 5.40 (0.25–114.25) at the 100-μm gap.</p>
</sec>
<sec id="S5"><title>Conclusions</title>
<p id="P5">The study indicated that the paralleling device helped the clinician more accurately assess the implant-abutment junction with the 50- and 100-μm gaps.</p>
</sec>
</abstract>
</article-meta>
</front>
</pmc>
</record>
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