Comparison of retention forces with various fabrication methods and materials in double crowns
Identifieur interne : 002F30 ( Pmc/Curation ); précédent : 002F29; suivant : 002F31Comparison of retention forces with various fabrication methods and materials in double crowns
Auteurs : Melahat Çelik Güven [Turquie] ; Meral Tuna [Turquie] ; Ergun Bozda [Turquie] ; Gizem Nur Öztürk [Turquie] ; Gulsen Bayraktar [Turquie]Source :
- The Journal of Advanced Prosthodontics [ 2005-7806 ] ; 2017.
Abstract
The purpose of this study was to analyze the retention force changes and wear behaviours of double-crown systems over long-term use.
Ten groups, each consisting of six samples, were evaluated. Specifically, casting gold alloy primary crown - casting gold alloy secondary crown (AA), laser sintering primary crown - laser sintering secondary crown (LL), casting Cr alloy primary crown - casting Cr alloy secondary crown, (CC) zirconia primary crown - electroformed secondary crown (ZA), and CAD/CAM titanium alloy primary crown - CAD/CAM titanium alloy secondary crown (TT) groups were evaluated at cone angles of 4° and 6°. The samples were subjected to 5,000 insertion-separation cycles in artificial saliva, and the retention forces were measured every 500 cycles. The wear levels were analyzed via SEM at the beginning and end of the 5,000 cycles.
In all samples, the retention forces increased when the conus angle decreased. The highest initial and final retention force values were found in the LL-4° group (32.89 N-32.65 N), and the lowest retention force values were found in the ZA6° group (5.41 N-6.27 N). The ZA groups' samples showed the least change in the retention force, and no wear was observed. In the other groups, wear was observed mostly in the primary crowns.
More predictable, clinically relevant, and less excursive retention forces can be observed in the ZA groups. The retention force values of the LL groups were statically similar to those of the other groups, except the ZA groups.
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DOI: 10.4047/jap.2017.9.4.308
PubMed: 28874999
PubMed Central: 5582098
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Comparison of retention forces with various fabrication methods and materials in double crowns</title><author><name sortKey="Celik Guven, Melahat" sort="Celik Guven, Melahat" uniqKey="Celik Guven M" first="Melahat" last="Çelik Güven">Melahat Çelik Güven</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, Faculty of Dentistry, Yeni Yüzyıl University, İstanbul, Turkey.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Turquie</country><wicri:regionArea>Department of Prosthodontics, Faculty of Dentistry, Yeni Yüzyıl University, İstanbul</wicri:regionArea></affiliation></author><author><name sortKey="Tuna, Meral" sort="Tuna, Meral" uniqKey="Tuna M" first="Meral" last="Tuna">Meral Tuna</name><affiliation wicri:level="1"><nlm:aff id="A2">Laboratory of Biomechanics, Faculty of Mechanical Engineering, Istanbul Techinical University,İstanbul, Turkey.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Turquie</country><wicri:regionArea>Laboratory of Biomechanics, Faculty of Mechanical Engineering, Istanbul Techinical University,İstanbul</wicri:regionArea></affiliation></author><author><name sortKey="Bozda, Ergun" sort="Bozda, Ergun" uniqKey="Bozda E" first="Ergun" last="Bozda">Ergun Bozda</name><affiliation wicri:level="1"><nlm:aff id="A2">Laboratory of Biomechanics, Faculty of Mechanical Engineering, Istanbul Techinical University,İstanbul, Turkey.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Turquie</country><wicri:regionArea>Laboratory of Biomechanics, Faculty of Mechanical Engineering, Istanbul Techinical University,İstanbul</wicri:regionArea></affiliation></author><author><name sortKey="Ozturk, Gizem Nur" sort="Ozturk, Gizem Nur" uniqKey="Ozturk G" first="Gizem Nur" last="Öztürk">Gizem Nur Öztürk</name><affiliation wicri:level="1"><nlm:aff id="A3">Department of Prosthodontics, Faculty of Dentistry, Istanbul University, İstanbul, Turkey.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Turquie</country><wicri:regionArea>Department of Prosthodontics, Faculty of Dentistry, Istanbul University, İstanbul</wicri:regionArea></affiliation></author><author><name sortKey="Bayraktar, Gulsen" sort="Bayraktar, Gulsen" uniqKey="Bayraktar G" first="Gulsen" last="Bayraktar">Gulsen Bayraktar</name><affiliation wicri:level="1"><nlm:aff id="A3">Department of Prosthodontics, Faculty of Dentistry, Istanbul University, İstanbul, Turkey.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Turquie</country><wicri:regionArea>Department of Prosthodontics, Faculty of Dentistry, Istanbul University, İstanbul</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">28874999</idno><idno type="pmc">5582098</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5582098</idno><idno type="RBID">PMC:5582098</idno><idno type="doi">10.4047/jap.2017.9.4.308</idno><date when="2017">2017</date><idno type="wicri:Area/Pmc/Corpus">002F30</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002F30</idno><idno type="wicri:Area/Pmc/Curation">002F30</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">002F30</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Comparison of retention forces with various fabrication methods and materials in double crowns</title><author><name sortKey="Celik Guven, Melahat" sort="Celik Guven, Melahat" uniqKey="Celik Guven M" first="Melahat" last="Çelik Güven">Melahat Çelik Güven</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, Faculty of Dentistry, Yeni Yüzyıl University, İstanbul, Turkey.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Turquie</country><wicri:regionArea>Department of Prosthodontics, Faculty of Dentistry, Yeni Yüzyıl University, İstanbul</wicri:regionArea></affiliation></author><author><name sortKey="Tuna, Meral" sort="Tuna, Meral" uniqKey="Tuna M" first="Meral" last="Tuna">Meral Tuna</name><affiliation wicri:level="1"><nlm:aff id="A2">Laboratory of Biomechanics, Faculty of Mechanical Engineering, Istanbul Techinical University,İstanbul, Turkey.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Turquie</country><wicri:regionArea>Laboratory of Biomechanics, Faculty of Mechanical Engineering, Istanbul Techinical University,İstanbul</wicri:regionArea></affiliation></author><author><name sortKey="Bozda, Ergun" sort="Bozda, Ergun" uniqKey="Bozda E" first="Ergun" last="Bozda">Ergun Bozda</name><affiliation wicri:level="1"><nlm:aff id="A2">Laboratory of Biomechanics, Faculty of Mechanical Engineering, Istanbul Techinical University,İstanbul, Turkey.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Turquie</country><wicri:regionArea>Laboratory of Biomechanics, Faculty of Mechanical Engineering, Istanbul Techinical University,İstanbul</wicri:regionArea></affiliation></author><author><name sortKey="Ozturk, Gizem Nur" sort="Ozturk, Gizem Nur" uniqKey="Ozturk G" first="Gizem Nur" last="Öztürk">Gizem Nur Öztürk</name><affiliation wicri:level="1"><nlm:aff id="A3">Department of Prosthodontics, Faculty of Dentistry, Istanbul University, İstanbul, Turkey.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Turquie</country><wicri:regionArea>Department of Prosthodontics, Faculty of Dentistry, Istanbul University, İstanbul</wicri:regionArea></affiliation></author><author><name sortKey="Bayraktar, Gulsen" sort="Bayraktar, Gulsen" uniqKey="Bayraktar G" first="Gulsen" last="Bayraktar">Gulsen Bayraktar</name><affiliation wicri:level="1"><nlm:aff id="A3">Department of Prosthodontics, Faculty of Dentistry, Istanbul University, İstanbul, Turkey.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Turquie</country><wicri:regionArea>Department of Prosthodontics, Faculty of Dentistry, Istanbul University, İstanbul</wicri:regionArea></affiliation></author></analytic><series><title level="j">The Journal of Advanced Prosthodontics</title><idno type="ISSN">2005-7806</idno><idno type="eISSN">2005-7814</idno><imprint><date when="2017">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>PURPOSE</title><p>The purpose of this study was to analyze the retention force changes and wear behaviours of double-crown systems over long-term use.</p></sec><sec><title>MATERIALS AND METHODS</title><p>Ten groups, each consisting of six samples, were evaluated. Specifically, casting gold alloy primary crown - casting gold alloy secondary crown (AA), laser sintering primary crown - laser sintering secondary crown (LL), casting Cr alloy primary crown - casting Cr alloy secondary crown, (CC) zirconia primary crown - electroformed secondary crown (ZA), and CAD/CAM titanium alloy primary crown - CAD/CAM titanium alloy secondary crown (TT) groups were evaluated at cone angles of 4° and 6°. The samples were subjected to 5,000 insertion-separation cycles in artificial saliva, and the retention forces were measured every 500 cycles. The wear levels were analyzed via SEM at the beginning and end of the 5,000 cycles.</p></sec><sec><title>RESULTS</title><p>In all samples, the retention forces increased when the conus angle decreased. The highest initial and final retention force values were found in the LL-4° group (32.89 N-32.65 N), and the lowest retention force values were found in the ZA6° group (5.41 N-6.27 N). The ZA groups' samples showed the least change in the retention force, and no wear was observed. In the other groups, wear was observed mostly in the primary crowns.</p></sec><sec><title>CONCLUSION</title><p>More predictable, clinically relevant, and less excursive retention forces can be observed in the ZA groups. 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<front><journal-meta><journal-id journal-id-type="nlm-ta">J Adv Prosthodont</journal-id><journal-id journal-id-type="iso-abbrev">J Adv Prosthodont</journal-id><journal-id journal-id-type="publisher-id">JAP</journal-id><journal-title-group><journal-title>The Journal of Advanced Prosthodontics</journal-title></journal-title-group><issn pub-type="ppub">2005-7806</issn><issn pub-type="epub">2005-7814</issn><publisher><publisher-name>The Korean Academy of Prosthodontics</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">28874999</article-id><article-id pub-id-type="pmc">5582098</article-id><article-id pub-id-type="doi">10.4047/jap.2017.9.4.308</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>Comparison of retention forces with various fabrication methods and materials in double crowns</article-title></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid" authenticated="true">https://orcid.org/0000-0002-0896-2920</contrib-id><name><surname>Çelik Güven</surname><given-names>Melahat</given-names></name><xref ref-type="aff" rid="A1">1</xref></contrib><contrib contrib-type="author"><name><surname>Tuna</surname><given-names>Meral</given-names></name><xref ref-type="aff" rid="A2">2</xref></contrib><contrib contrib-type="author"><name><surname>Bozdağ</surname><given-names>Ergun</given-names></name><xref ref-type="aff" rid="A2">2</xref></contrib><contrib contrib-type="author"><name><surname>Öztürk</surname><given-names>Gizem Nur</given-names></name><xref ref-type="aff" rid="A3">3</xref></contrib><contrib contrib-type="author"><name><surname>Bayraktar</surname><given-names>Gulsen</given-names></name><xref ref-type="aff" rid="A3">3</xref></contrib></contrib-group><aff id="A1"><label>1</label>Department of Prosthodontics, Faculty of Dentistry, Yeni Yüzyıl University, İstanbul, Turkey.</aff><aff id="A2"><label>2</label>Laboratory of Biomechanics, Faculty of Mechanical Engineering, Istanbul Techinical University,İstanbul, Turkey.</aff><aff id="A3"><label>3</label>Department of Prosthodontics, Faculty of Dentistry, Istanbul University, İstanbul, Turkey.</aff><author-notes><corresp>Corresponding author: Melahat Çelik Güven. Department of Prosthodontics, Faculty of Dentistry, Yeni Yüzyıl University, Sütlüce Mah. Binektaşı Street. Number: 10 Beyoğlu/İSTANBUL, 34445, Turkey. Tel. +905057706261: <email>melahatcelik_@hotmail.com</email></corresp></author-notes><pub-date pub-type="ppub"><month>8</month><year>2017</year></pub-date><pub-date pub-type="epub"><day>16</day><month>8</month><year>2017</year></pub-date><volume>9</volume><issue>4</issue><fpage>308</fpage><lpage>314</lpage><history><date date-type="received"><day>06</day><month>1</month><year>2017</year></date><date date-type="rev-recd"><day>10</day><month>5</month><year>2017</year></date><date date-type="accepted"><day>19</day><month>6</month><year>2017</year></date></history><permissions><copyright-statement>© 2017 The Korean Academy of Prosthodontics</copyright-statement><copyright-year>2017</copyright-year><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/"><license-p>This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (<ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by-nc/3.0">http://creativecommons.org/licenses/by-nc/3.0</ext-link>) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p></license></permissions><abstract><sec><title>PURPOSE</title><p>The purpose of this study was to analyze the retention force changes and wear behaviours of double-crown systems over long-term use.</p></sec><sec><title>MATERIALS AND METHODS</title><p>Ten groups, each consisting of six samples, were evaluated. Specifically, casting gold alloy primary crown - casting gold alloy secondary crown (AA), laser sintering primary crown - laser sintering secondary crown (LL), casting Cr alloy primary crown - casting Cr alloy secondary crown, (CC) zirconia primary crown - electroformed secondary crown (ZA), and CAD/CAM titanium alloy primary crown - CAD/CAM titanium alloy secondary crown (TT) groups were evaluated at cone angles of 4° and 6°. The samples were subjected to 5,000 insertion-separation cycles in artificial saliva, and the retention forces were measured every 500 cycles. The wear levels were analyzed via SEM at the beginning and end of the 5,000 cycles.</p></sec><sec><title>RESULTS</title><p>In all samples, the retention forces increased when the conus angle decreased. The highest initial and final retention force values were found in the LL-4° group (32.89 N-32.65 N), and the lowest retention force values were found in the ZA6° group (5.41 N-6.27 N). The ZA groups' samples showed the least change in the retention force, and no wear was observed. In the other groups, wear was observed mostly in the primary crowns.</p></sec><sec><title>CONCLUSION</title><p>More predictable, clinically relevant, and less excursive retention forces can be observed in the ZA groups. The retention force values of the LL groups were statically similar to those of the other groups, except the ZA groups.</p></sec></abstract><kwd-group><kwd>Double crown</kwd><kwd>Retention force</kwd><kwd>Laser sinter</kwd><kwd>Wear behaviour</kwd><kwd>SEM</kwd></kwd-group></article-meta></front><floats-group><fig id="F1" orientation="portrait" position="float"><label>Fig. 1</label><caption><title>Experimental set up of technical drawing.<xref rid="B13" ref-type="bibr">13</xref></title><p>1. steel die 2. brass holder 3. screw holding the die in place 4. o rings holding the artificial saliva chamber in place without leakage 5. artificial saliva chamber 6. iron base holding the magnet 7. screw attaching the iron base to the brass holder 8. magnet connecting the setup to the Z-type load cell.</p></caption><graphic xlink:href="jap-9-308-g001"></graphic></fig><fig id="F2" orientation="portrait" position="float"><label>Fig. 2</label><caption><title>View of the Mini Bionix II device in which the insertion - separation cycles were performed.</title></caption><graphic xlink:href="jap-9-308-g002"></graphic></fig><fig id="F3" orientation="portrait" position="float"><label>Fig. 3</label><caption><title>Cylindrical brass connector.</title></caption><graphic xlink:href="jap-9-308-g003"></graphic></fig><fig id="F4" orientation="portrait" position="float"><label>Fig. 4</label><caption><title>The mean retention force values of groups along 5,000 insertion - separation cycles.</title></caption><graphic xlink:href="jap-9-308-g004"></graphic></fig><fig id="F5" orientation="portrait" position="float"><label>Fig. 5</label><caption><title>SEM images (×750 or ×1000) of primary crown surfaces from all groups. For all groups, the first images represent samples to which the experimental procedure was not applied.</title></caption><graphic xlink:href="jap-9-308-g005"></graphic></fig><table-wrap id="T1" orientation="portrait" position="float"><label>Table 1</label><caption><title>The initial and final mean retention force values (N) of groups with various material couples and conus angles and their comparisons</title></caption><alternatives><graphic xlink:href="jap-9-308-i001"></graphic><table frame="hsides" rules="rows"><col width="16%" span="1"></col><col width="14%" span="1"></col><col width="14%" span="1"></col><col width="14%" span="1"></col><col width="14%" span="1"></col><col width="14%" span="1"></col><col width="14%" span="1"></col><thead><tr><th valign="top" align="center" rowspan="1" colspan="7">Retention force changes</th></tr><tr><th valign="top" align="center" rowspan="1" colspan="1"></th><th valign="top" align="center" rowspan="1" colspan="1">AA-4°</th><th valign="top" align="center" rowspan="1" colspan="1">LL-4°</th><th valign="top" align="center" rowspan="1" colspan="1">CC-4°</th><th valign="top" align="center" rowspan="1" colspan="1">ZA-4°</th><th valign="top" align="center" rowspan="1" colspan="1">TT-4°</th><th valign="top" align="center" rowspan="1" colspan="1"><italic>P</italic></th></tr></thead><tbody><tr><td valign="top" align="left" rowspan="1" colspan="1">Initial force ± SD</td><td valign="top" align="center" rowspan="1" colspan="1">19.27 ± 4.91</td><td valign="top" align="center" rowspan="1" colspan="1">32.89 ± 9.82</td><td valign="top" align="center" rowspan="1" colspan="1">16.63 ± 7.75</td><td valign="top" align="center" rowspan="1" colspan="1">11.86 ± 7.48</td><td valign="top" align="center" rowspan="1" colspan="1">20.8 ± 11.02</td><td valign="top" align="center" rowspan="1" colspan="1">.004<sup>**</sup></td></tr><tr><td valign="top" align="left" rowspan="1" colspan="1">Final force ± SD</td><td valign="top" align="center" rowspan="1" colspan="1">32.14 ± 3.55</td><td valign="top" align="center" rowspan="1" colspan="1">32.65 ± 2.56</td><td valign="top" align="center" rowspan="1" colspan="1">29.36 ± 6.29</td><td valign="top" align="center" rowspan="1" colspan="1">13.26 ± 6.19</td><td valign="top" align="center" rowspan="1" colspan="1">20.682 ± 9.16</td><td valign="top" align="center" rowspan="1" colspan="1">.001<sup>**</sup></td></tr></tbody></table></alternatives></table-wrap><table-wrap id="T2" orientation="portrait" position="float"><label>Table 2</label><caption><title>The initial and final mean retention force values (N) of groups with various material couples and conus angles and their comparisons</title></caption><alternatives><graphic xlink:href="jap-9-308-i002"></graphic><table frame="hsides" rules="rows"><col width="16%" span="1"></col><col width="14%" span="1"></col><col width="14%" span="1"></col><col width="14%" span="1"></col><col width="14%" span="1"></col><col width="14%" span="1"></col><col width="14%" span="1"></col><thead><tr><th valign="top" align="center" rowspan="1" colspan="7">Retention force changes</th></tr><tr><th valign="top" align="center" rowspan="1" colspan="1"></th><th valign="top" align="center" rowspan="1" colspan="1">AA-6°</th><th valign="top" align="center" rowspan="1" colspan="1">LL-6°</th><th valign="top" align="center" rowspan="1" colspan="1">CC-6°</th><th valign="top" align="center" rowspan="1" colspan="1">ZA-6°</th><th valign="top" align="center" rowspan="1" colspan="1">TT-6°</th><th valign="top" align="center" rowspan="1" colspan="1"><italic>P</italic></th></tr></thead><tbody><tr><td valign="middle" align="left" rowspan="1" colspan="1">Initial force ± SD</td><td valign="middle" align="center" rowspan="1" colspan="1">14.33 ± 3.76</td><td valign="middle" align="center" rowspan="1" colspan="1">10.07 ± 2.7</td><td valign="middle" align="center" rowspan="1" colspan="1">8.36 ± 4.25</td><td valign="middle" align="center" rowspan="1" colspan="1">5.41 ± 0.66</td><td valign="middle" align="center" rowspan="1" colspan="1">10.11 ± 4.8</td><td valign="middle" align="center" rowspan="1" colspan="1">.004<sup>**</sup></td></tr><tr><td valign="top" align="left" rowspan="1" colspan="1">Final force ± SD</td><td valign="top" align="center" rowspan="1" colspan="1">23.89 ± 6.1</td><td valign="top" align="center" rowspan="1" colspan="1">21.21 ± 5.99</td><td valign="top" align="center" rowspan="1" colspan="1">21.08 ± 3.5</td><td valign="top" align="center" rowspan="1" colspan="1">6.27 ± 1.13</td><td valign="top" align="center" rowspan="1" colspan="1">17.62 ± 5.78</td><td valign="top" align="center" rowspan="1" colspan="1">.001<sup>**</sup></td></tr></tbody></table></alternatives></table-wrap></floats-group></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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