Hollow Abutment Screw Design for Easy Retrieval in Case of Screw Fracture in Dental Implant System
Identifieur interne : 003152 ( Pmc/Curation ); précédent : 003151; suivant : 003153Hollow Abutment Screw Design for Easy Retrieval in Case of Screw Fracture in Dental Implant System
Auteurs : Bo Kyun Sim [Corée du Sud] ; Bongju Kim [Corée du Sud] ; Min Jeong Kim [Corée du Sud] ; Guk Hyun Jeong [Corée du Sud] ; Kyung Won Ju [Corée du Sud] ; Yoo Jin Shin [Corée du Sud] ; Man Yong Kim [Corée du Sud] ; Jong-Ho Lee [Corée du Sud]Source :
- Journal of Healthcare Engineering [ 2040-2295 ] ; 2017.
Abstract
The prosthetic component of dental implant is attached on the abutment which is connected to the fixture with an abutment screw. The abutment screw fracture is not frequent; however, the retrieval of the fractured screw is not easy, and it poses complications. A retrieval kit was developed which utilizes screw removal drills to make a hole on the fractured screw that provides an engaging drill to unscrew it. To minimize this process, the abutment screw is modified with a prefabricated access hole for easy retrieval. This study aimed to introduce this modified design of the abutment screw, the concept of easy retrieval, and to compare the mechanical strengths of the conventional and hollow abutment screws by finite element analysis (FEA) and mechanical test. In the FEA results, both types of abutment screws showed similar stress distribution in the single artificial tooth system. A maximum load difference of about 2% occurred in the vertical load by a mechanical test. This study showed that the hollow abutment screw may be an alternative to the conventional abutment screws because this is designed for easy retrieval and that both abutment screws showed no significant difference in the mechanical tests and in the FEA.
Url:
DOI: 10.1155/2017/4842072
PubMed: 29065610
PubMed Central: 5563428
Links toward previous steps (curation, corpus...)
- to stream Pmc, to step Corpus: Pour aller vers cette notice dans l'étape Curation :003152
Links to Exploration step
PMC:5563428Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Hollow Abutment Screw Design for Easy Retrieval in Case of Screw Fracture in Dental Implant System</title><author><name sortKey="Sim, Bo Kyun" sort="Sim, Bo Kyun" uniqKey="Sim B" first="Bo Kyun" last="Sim">Bo Kyun Sim</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Kim, Bongju" sort="Kim, Bongju" uniqKey="Kim B" first="Bongju" last="Kim">Bongju Kim</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Kim, Min Jeong" sort="Kim, Min Jeong" uniqKey="Kim M" first="Min Jeong" last="Kim">Min Jeong Kim</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Jeong, Guk Hyun" sort="Jeong, Guk Hyun" uniqKey="Jeong G" first="Guk Hyun" last="Jeong">Guk Hyun Jeong</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Ju, Kyung Won" sort="Ju, Kyung Won" uniqKey="Ju K" first="Kyung Won" last="Ju">Kyung Won Ju</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Shin, Yoo Jin" sort="Shin, Yoo Jin" uniqKey="Shin Y" first="Yoo Jin" last="Shin">Yoo Jin Shin</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Kim, Man Yong" sort="Kim, Man Yong" uniqKey="Kim M" first="Man Yong" last="Kim">Man Yong Kim</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Lee, Jong Ho" sort="Lee, Jong Ho" uniqKey="Lee J" first="Jong-Ho" last="Lee">Jong-Ho Lee</name><affiliation wicri:level="1"><nlm:aff id="I2">Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">29065610</idno><idno type="pmc">5563428</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5563428</idno><idno type="RBID">PMC:5563428</idno><idno type="doi">10.1155/2017/4842072</idno><date when="2017">2017</date><idno type="wicri:Area/Pmc/Corpus">003152</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">003152</idno><idno type="wicri:Area/Pmc/Curation">003152</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">003152</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Hollow Abutment Screw Design for Easy Retrieval in Case of Screw Fracture in Dental Implant System</title><author><name sortKey="Sim, Bo Kyun" sort="Sim, Bo Kyun" uniqKey="Sim B" first="Bo Kyun" last="Sim">Bo Kyun Sim</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Kim, Bongju" sort="Kim, Bongju" uniqKey="Kim B" first="Bongju" last="Kim">Bongju Kim</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Kim, Min Jeong" sort="Kim, Min Jeong" uniqKey="Kim M" first="Min Jeong" last="Kim">Min Jeong Kim</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Jeong, Guk Hyun" sort="Jeong, Guk Hyun" uniqKey="Jeong G" first="Guk Hyun" last="Jeong">Guk Hyun Jeong</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Ju, Kyung Won" sort="Ju, Kyung Won" uniqKey="Ju K" first="Kyung Won" last="Ju">Kyung Won Ju</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Shin, Yoo Jin" sort="Shin, Yoo Jin" uniqKey="Shin Y" first="Yoo Jin" last="Shin">Yoo Jin Shin</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Kim, Man Yong" sort="Kim, Man Yong" uniqKey="Kim M" first="Man Yong" last="Kim">Man Yong Kim</name><affiliation wicri:level="1"><nlm:aff id="I1">Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul</wicri:regionArea></affiliation></author><author><name sortKey="Lee, Jong Ho" sort="Lee, Jong Ho" uniqKey="Lee J" first="Jong-Ho" last="Lee">Jong-Ho Lee</name><affiliation wicri:level="1"><nlm:aff id="I2">Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul, Republic of Korea</nlm:aff><country xml:lang="fr">Corée du Sud</country><wicri:regionArea>Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul</wicri:regionArea></affiliation></author></analytic><series><title level="j">Journal of Healthcare Engineering</title><idno type="ISSN">2040-2295</idno><idno type="eISSN">2040-2309</idno><imprint><date when="2017">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The prosthetic component of dental implant is attached on the abutment which is connected to the fixture with an abutment screw. The abutment screw fracture is not frequent; however, the retrieval of the fractured screw is not easy, and it poses complications. A retrieval kit was developed which utilizes screw removal drills to make a hole on the fractured screw that provides an engaging drill to unscrew it. To minimize this process, the abutment screw is modified with a prefabricated access hole for easy retrieval. This study aimed to introduce this modified design of the abutment screw, the concept of easy retrieval, and to compare the mechanical strengths of the conventional and hollow abutment screws by finite element analysis (FEA) and mechanical test. In the FEA results, both types of abutment screws showed similar stress distribution in the single artificial tooth system. A maximum load difference of about 2% occurred in the vertical load by a mechanical test. This study showed that the hollow abutment screw may be an alternative to the conventional abutment screws because this is designed for easy retrieval and that both abutment screws showed no significant difference in the mechanical tests and in the FEA.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Reyhanian, A" uniqKey="Reyhanian A">A. Reyhanian</name></author><author><name sortKey="Parker, S" uniqKey="Parker S">S. Parker</name></author><author><name sortKey="Moshonov, J" uniqKey="Moshonov J">J. Moshonov</name></author><author><name sortKey="Fuhrman, N" uniqKey="Fuhrman N">N. Fuhrman</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Adell, R" uniqKey="Adell R">R. Adell</name></author><author><name sortKey="Eriksson, B" uniqKey="Eriksson B">B. Eriksson</name></author><author><name sortKey="Lekholm, U" uniqKey="Lekholm U">U. Lekholm</name></author><author><name sortKey="Branemark, P I" uniqKey="Branemark P">P. I. Branemark</name></author><author><name sortKey="Jemt, T" uniqKey="Jemt T">T. Jemt</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Wie, H" uniqKey="Wie H">H. Wie</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Schwarz, M S" uniqKey="Schwarz M">M. S. Schwarz</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Goodacre, C J" uniqKey="Goodacre C">C. J. Goodacre</name></author><author><name sortKey="Kan, J Y" uniqKey="Kan J">J. Y. Kan</name></author><author><name sortKey="Rungcharassaeng, K" uniqKey="Rungcharassaeng K">K. Rungcharassaeng</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Scarano, A" uniqKey="Scarano A">A. Scarano</name></author><author><name sortKey="Quaranta, M" uniqKey="Quaranta M">M. Quaranta</name></author><author><name sortKey="Traini, T" uniqKey="Traini T">T. Traini</name></author><author><name sortKey="Piattelli, M" uniqKey="Piattelli M">M. Piattelli</name></author><author><name sortKey="Piattelli, A" uniqKey="Piattelli A">A. Piattelli</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Satterthwaite, J" uniqKey="Satterthwaite J">J. Satterthwaite</name></author><author><name sortKey="Rickman, L" uniqKey="Rickman L">L. Rickman</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Jung, R E" uniqKey="Jung R">R. E. Jung</name></author><author><name sortKey="Pjetursson, B E" uniqKey="Pjetursson B">B. E. Pjetursson</name></author><author><name sortKey="Glauser, R" uniqKey="Glauser R">R. Glauser</name></author><author><name sortKey="Zembic, A" uniqKey="Zembic A">A. Zembic</name></author><author><name sortKey="Zwahlen, M" uniqKey="Zwahlen M">M. Zwahlen</name></author><author><name sortKey="Lang, N P" uniqKey="Lang N">N. P. Lang</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Satwalekar, P" uniqKey="Satwalekar P">P. Satwalekar</name></author><author><name sortKey="Chander, K S" uniqKey="Chander K">K. S. Chander</name></author><author><name sortKey="Reddy, B A" uniqKey="Reddy B">B. A. Reddy</name></author><author><name sortKey="Sandeep, N" uniqKey="Sandeep N">N. Sandeep</name></author><author><name sortKey="Sandeep, N" uniqKey="Sandeep N">N. Sandeep</name></author><author><name sortKey="Satwalekar, T" uniqKey="Satwalekar T">T. Satwalekar</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Nergiz, I" uniqKey="Nergiz I">I. Nergiz</name></author><author><name sortKey="Schmage, P" uniqKey="Schmage P">P. Schmage</name></author><author><name sortKey="Shahin, R" uniqKey="Shahin R">R. Shahin</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Maalhage Fard, A" uniqKey="Maalhage Fard A">A. Maalhage-Fard</name></author><author><name sortKey="Jabobs, L C" uniqKey="Jabobs L">L. C. Jabobs</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Siamos, G" uniqKey="Siamos G">G. Siamos</name></author><author><name sortKey="Winkler, S" uniqKey="Winkler S">S. Winkler</name></author><author><name sortKey="Boberick, K G" uniqKey="Boberick K">K. G. Boberick</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Ciftci, Y" uniqKey="Ciftci Y">Y. Çiftçi</name></author><author><name sortKey="Canay, S" uniqKey="Canay S">S. Canay</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Eng, J" uniqKey="Eng J">J. Eng</name></author></analytic></biblStruct></listBibl></div1></back></TEI><pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Healthc Eng</journal-id><journal-id journal-id-type="iso-abbrev">J Healthc Eng</journal-id><journal-id journal-id-type="publisher-id">JHE</journal-id><journal-title-group><journal-title>Journal of Healthcare Engineering</journal-title></journal-title-group><issn pub-type="ppub">2040-2295</issn><issn pub-type="epub">2040-2309</issn><publisher><publisher-name>Hindawi</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">29065610</article-id><article-id pub-id-type="pmc">5563428</article-id><article-id pub-id-type="doi">10.1155/2017/4842072</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title>Hollow Abutment Screw Design for Easy Retrieval in Case of Screw Fracture in Dental Implant System</article-title></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid" authenticated="false">http://orcid.org/0000-0002-6251-060X</contrib-id><name><surname>Sim</surname><given-names>Bo Kyun</given-names></name><xref ref-type="aff" rid="I1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Kim</surname><given-names>Bongju</given-names></name><xref ref-type="aff" rid="I1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid" authenticated="false">http://orcid.org/0000-0003-2454-9201</contrib-id><name><surname>Kim</surname><given-names>Min Jeong</given-names></name><xref ref-type="aff" rid="I1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid" authenticated="false">http://orcid.org/0000-0003-0193-5812</contrib-id><name><surname>Jeong</surname><given-names>Guk Hyun</given-names></name><xref ref-type="aff" rid="I1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid" authenticated="false">http://orcid.org/0000-0002-2566-7405</contrib-id><name><surname>Ju</surname><given-names>Kyung Won</given-names></name><xref ref-type="aff" rid="I1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Shin</surname><given-names>Yoo Jin</given-names></name><xref ref-type="aff" rid="I1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid" authenticated="false">http://orcid.org/0000-0002-8959-935X</contrib-id><name><surname>Kim</surname><given-names>Man Yong</given-names></name><xref ref-type="aff" rid="I1"><sup>1</sup></xref><xref ref-type="corresp" rid="cor1"><sup>*</sup></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid" authenticated="false">http://orcid.org/0000-0001-5808-6327</contrib-id><name><surname>Lee</surname><given-names>Jong-Ho</given-names></name><xref ref-type="aff" rid="I2"><sup>2</sup></xref><xref ref-type="corresp" rid="cor2"><sup>*</sup></xref></contrib></contrib-group><aff id="I1"><sup>1</sup>Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea</aff><aff id="I2"><sup>2</sup>Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul, Republic of Korea</aff><author-notes><corresp id="cor1">*Man Yong Kim: <email>dentykim@gmail.com</email> and </corresp><corresp id="cor2">*Jong-Ho Lee: <email>leejongh@snu.ac.kr</email></corresp><fn fn-type="other"><p>Academic Editor: Rui Zhu</p></fn></author-notes><pub-date pub-type="ppub"><year>2017</year></pub-date><pub-date pub-type="epub"><day>6</day><month>8</month><year>2017</year></pub-date><volume>2017</volume><elocation-id>4842072</elocation-id><history><date date-type="received"><day>3</day><month>3</month><year>2017</year></date><date date-type="rev-recd"><day>19</day><month>6</month><year>2017</year></date><date date-type="accepted"><day>22</day><month>6</month><year>2017</year></date></history><permissions><copyright-statement>Copyright © 2017 Bo Kyun Sim et al.</copyright-statement><copyright-year>2017</copyright-year><license xlink:href="http://creativecommons.org/licenses/by/4.0/"><license-p>This is an open access article distributed under 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><p>The prosthetic component of dental implant is attached on the abutment which is connected to the fixture with an abutment screw. The abutment screw fracture is not frequent; however, the retrieval of the fractured screw is not easy, and it poses complications. A retrieval kit was developed which utilizes screw removal drills to make a hole on the fractured screw that provides an engaging drill to unscrew it. To minimize this process, the abutment screw is modified with a prefabricated access hole for easy retrieval. This study aimed to introduce this modified design of the abutment screw, the concept of easy retrieval, and to compare the mechanical strengths of the conventional and hollow abutment screws by finite element analysis (FEA) and mechanical test. In the FEA results, both types of abutment screws showed similar stress distribution in the single artificial tooth system. A maximum load difference of about 2% occurred in the vertical load by a mechanical test. This study showed that the hollow abutment screw may be an alternative to the conventional abutment screws because this is designed for easy retrieval and that both abutment screws showed no significant difference in the mechanical tests and in the FEA.</p></abstract><funding-group><award-group><funding-source>Ministry of Health and Welfare</funding-source><award-id>HI15C1535</award-id></award-group><award-group><funding-source>Korea Health Industry Development Institute</funding-source></award-group></funding-group></article-meta></front><floats-group><fig id="fig1" orientation="portrait" position="float"><label>Figure 1</label><caption><p>Abutment screw design. (a) Conventional type. (b) Hollow type.</p></caption><graphic xlink:href="JHE2017-4842072.001"></graphic></fig><fig id="fig2" orientation="portrait" position="float"><label>Figure 2</label><caption><p>Example of mechanical test. (a) Fixed abutment screw on the jig by applying insertion torque. (b) Vertical loading.</p></caption><graphic xlink:href="JHE2017-4842072.002"></graphic></fig><fig id="fig3" orientation="portrait" position="float"><label>Figure 3</label><caption><p>3D finite element model. (a) Constructed 3D model, (b) conventional type, and (c) hollow type.</p></caption><graphic xlink:href="JHE2017-4842072.003"></graphic></fig><fig id="fig4" orientation="portrait" position="float"><label>Figure 4</label><caption><p>(a) Abutment screw fracture on the hollow abutment screw. (b) Hollow abutment screw is easily retrieved with the H-file.</p></caption><graphic xlink:href="JHE2017-4842072.004"></graphic></fig><fig id="fig5" orientation="portrait" position="float"><label>Figure 5</label><caption><p>Load-displacement curve of abutment screws.</p></caption><graphic xlink:href="JHE2017-4842072.005"></graphic></fig><fig id="fig6" orientation="portrait" position="float"><label>Figure 6</label><caption><p>von Mises stress distribution under vertical loading condition. (a) Conventional abutment screw. (b) Hollow abutment screw.</p></caption><graphic xlink:href="JHE2017-4842072.006"></graphic></fig><fig id="fig7" orientation="portrait" position="float"><label>Figure 7</label><caption><p>von Mises stress distribution under horizontal loading condition. (a) Conventional abutment screw. (b) Hollow abutment screw.</p></caption><graphic xlink:href="JHE2017-4842072.007"></graphic></fig><table-wrap id="tab1" orientation="portrait" position="float"><label>Table 1</label><caption><p>Material properties.</p></caption><table frame="hsides" rules="groups"><thead><tr><th align="left" rowspan="1" colspan="1">Components</th><th align="center" rowspan="1" colspan="1">Material</th><th align="center" rowspan="1" colspan="1">Elasticity (Gpa)</th><th align="center" rowspan="1" colspan="1">Poisson's ratio</th></tr></thead><tbody><tr><td align="left" rowspan="1" colspan="1">Crown</td><td align="center" rowspan="1" colspan="1">Zirconia</td><td align="center" rowspan="1" colspan="1">260</td><td align="center" rowspan="1" colspan="1">0.28</td></tr><tr><td align="left" rowspan="1" colspan="1">Abutment</td><td align="center" rowspan="3" colspan="1">Ti alloy</td><td align="center" rowspan="3" colspan="1">113.8</td><td align="center" rowspan="3" colspan="1">0.342</td></tr><tr><td align="left" rowspan="1" colspan="1">Fixture</td></tr><tr><td align="left" rowspan="1" colspan="1">Abutment screw</td></tr><tr><td align="left" rowspan="1" colspan="1">Cortical bone</td><td align="center" rowspan="1" colspan="1">Cortical bone</td><td align="center" rowspan="1" colspan="1">14.0</td><td align="center" rowspan="1" colspan="1">0.3</td></tr><tr><td align="left" rowspan="1" colspan="1">Cancellous bone</td><td align="center" rowspan="1" colspan="1">Cancellous bone</td><td align="center" rowspan="1" colspan="1">1.5</td><td align="center" rowspan="1" colspan="1">0.45</td></tr></tbody></table></table-wrap><table-wrap id="tab2" orientation="portrait" position="float"><label>Table 2</label><caption><p>Number of elements and nodes.</p></caption><table frame="hsides" rules="groups"><thead><tr><th align="left" rowspan="2" colspan="1">Components</th><th align="center" colspan="2" rowspan="1">Elements</th><th align="center" colspan="2" rowspan="1">Nodes</th></tr><tr><th align="center" rowspan="1" colspan="1">Conventional</th><th align="center" rowspan="1" colspan="1">Hollow</th><th align="center" rowspan="1" colspan="1">Conventional</th><th align="center" rowspan="1" colspan="1">Hollow</th></tr></thead><tbody><tr><td align="left" rowspan="1" colspan="1">Crown</td><td align="center" colspan="2" rowspan="1">29,614</td><td align="center" colspan="2" rowspan="1">6441</td></tr><tr><td align="left" rowspan="1" colspan="1">Abutment</td><td align="center" colspan="2" rowspan="1">6242</td><td align="center" colspan="2" rowspan="1">1868</td></tr><tr><td align="left" rowspan="1" colspan="1">Fixture</td><td align="center" colspan="2" rowspan="1">5441</td><td align="center" colspan="2" rowspan="1">13,307</td></tr><tr><td align="left" rowspan="1" colspan="1">Cortical bone</td><td align="center" colspan="2" rowspan="1">32,916</td><td align="center" colspan="2" rowspan="1">8633</td></tr><tr><td align="left" rowspan="1" colspan="1">Cancellous bone</td><td align="center" colspan="2" rowspan="1">149,721</td><td align="center" colspan="2" rowspan="1">31,303</td></tr><tr><td align="left" rowspan="1" colspan="1">Abutment screw</td><td align="center" rowspan="1" colspan="1">26,792</td><td align="center" rowspan="1" colspan="1">14,513</td><td align="center" rowspan="1" colspan="1">5963</td><td align="center" rowspan="1" colspan="1">3667</td></tr></tbody></table></table-wrap><table-wrap id="tab3" orientation="portrait" position="float"><label>Table 3</label><caption><p>Mechanical test parameters of two different types of abutment screws, <italic>n</italic> = 9, respectively.</p></caption><table frame="hsides" rules="groups"><thead><tr><th align="left" rowspan="1" colspan="1">Direction</th><th align="center" rowspan="1" colspan="1">Type</th><th align="center" rowspan="1" colspan="1">Value</th><th align="center" rowspan="1" colspan="1">Max load (N)</th><th align="center" rowspan="1" colspan="1">Displacement at max load (mm)</th></tr></thead><tbody><tr><td align="left" rowspan="4" colspan="1">Vertical</td><td align="center" rowspan="2" colspan="1">Conventional</td><td align="center" rowspan="1" colspan="1">Ave.</td><td align="center" rowspan="1" colspan="1">1452.27</td><td align="center" rowspan="1" colspan="1">0.25</td></tr><tr><td align="center" rowspan="1" colspan="1">SD</td><td align="center" rowspan="1" colspan="1">256.10</td><td align="center" rowspan="1" colspan="1">0.04</td></tr><tr><td align="center" rowspan="2" colspan="1">Hollow</td><td align="center" rowspan="1" colspan="1">Ave.</td><td align="center" rowspan="1" colspan="1">1480.37</td><td align="center" rowspan="1" colspan="1">0.35</td></tr><tr><td align="center" rowspan="1" colspan="1">SD</td><td align="center" rowspan="1" colspan="1">137.90</td><td align="center" rowspan="1" colspan="1">0.05</td></tr></tbody></table><table-wrap-foot><fn><p>No significant difference between the two groups (<italic>P</italic> > 0.05).</p></fn></table-wrap-foot></table-wrap><table-wrap id="tab4" orientation="portrait" position="float"><label>Table 4</label><caption><p>Finite element analysis results of two different types of abutment screw forms: vertical load and horizontal load.</p></caption><table frame="hsides" rules="groups"><thead><tr><th align="left" rowspan="1" colspan="1">Load</th><th align="center" rowspan="1" colspan="1">Type</th><th align="center" rowspan="1" colspan="1">von Mises stress (MPa)</th></tr></thead><tbody><tr><td align="left" rowspan="2" colspan="1">Vertical</td><td align="center" rowspan="1" colspan="1">Conventional</td><td align="center" rowspan="1" colspan="1">116.16</td></tr><tr><td align="center" rowspan="1" colspan="1">Hollow</td><td align="center" rowspan="1" colspan="1">96.48</td></tr><tr><td align="left" rowspan="2" colspan="1">Horizontal</td><td align="center" rowspan="1" colspan="1">Conventional</td><td align="center" rowspan="1" colspan="1">110.99</td></tr><tr><td align="center" rowspan="1" colspan="1">Hollow</td><td align="center" rowspan="1" colspan="1">106.33</td></tr></tbody></table></table-wrap></floats-group></pmc></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Santé/explor/EdenteV2/Data/Pmc/Curation
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 003152 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Pmc/Curation/biblio.hfd -nk 003152 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Santé
|area= EdenteV2
|flux= Pmc
|étape= Curation
|type= RBID
|clé= PMC:5563428
|texte= Hollow Abutment Screw Design for Easy Retrieval in Case of Screw Fracture in Dental Implant System
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Pmc/Curation/RBID.i -Sk "pubmed:29065610" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Pmc/Curation/biblio.hfd \
| NlmPubMed2Wicri -a EdenteV2
| This area was generated with Dilib version V0.6.32. |  |