Assessing fit at the implant-abutment junction with a radiographic device that does not require access to the implant body
Identifieur interne : 001C81 ( Main/Exploration ); précédent : 001C80; suivant : 001C82Assessing fit at the implant-abutment junction with a radiographic device that does not require access to the implant body
Auteurs : Kevin C. Lin ; Chandur P. K. Wadhwani ; Jing Cheng ; Arun Sharma ; Frederick FinzenSource :
- The Journal of prosthetic dentistry [ 0022-3913 ] ; 2014.
Abstract
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.
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.
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.
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 (
The study indicated that the paralleling device helped the clinician more accurately assess the implant-abutment junction with the 50- and 100-μm gaps.
Url:
DOI: 10.1016/j.prosdent.2014.03.016
PubMed: 24836280
PubMed Central: 5567837
Affiliations:
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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><idno type="wicri:Area/Pmc/Curation">002602</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">002602</idno><idno type="wicri:Area/Pmc/Checkpoint">001612</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">001612</idno><idno type="wicri:Area/Ncbi/Merge">005088</idno><idno type="wicri:Area/Ncbi/Curation">005088</idno><idno type="wicri:Area/Ncbi/Checkpoint">005088</idno><idno type="wicri:doubleKey">0022-3913:2014:Lin K:assessing:fit:at</idno><idno type="wicri:Area/Main/Merge">001C88</idno><idno type="wicri:Area/Main/Curation">001C81</idno><idno type="wicri:Area/Main/Exploration">001C81</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><affiliations><list></list><tree><noCountry><name sortKey="Cheng, Jing" sort="Cheng, Jing" uniqKey="Cheng J" first="Jing" last="Cheng">Jing Cheng</name><name sortKey="Finzen, Frederick" sort="Finzen, Frederick" uniqKey="Finzen F" first="Frederick" last="Finzen">Frederick Finzen</name><name sortKey="Lin, Kevin C" sort="Lin, Kevin C" uniqKey="Lin K" first="Kevin C." last="Lin">Kevin C. Lin</name><name sortKey="Sharma, Arun" sort="Sharma, Arun" uniqKey="Sharma A" first="Arun" last="Sharma">Arun Sharma</name><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></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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