The impact of frenulum height on strains in maxillary denture bases
Identifieur interne : 002E92 ( Pmc/Curation ); précédent : 002E91; suivant : 002E93The impact of frenulum height on strains in maxillary denture bases
Auteurs : Altug Cilingir [Turquie] ; Hakan Bilhan [Turquie] ; Gokhan Baysal [Turquie] ; Emin Sunbuloglu [Turquie] ; Ergun Bozdag [Turquie]Source :
- The Journal of Advanced Prosthodontics [ 2005-7806 ] ; 2013.
Abstract
The midline fracture of maxillary complete dentures is a frequently encountered complication. The purpose of this study was to assess the effect of frenulum height on midline strains of maxillary complete dentures.
A removable maxillary complete denture was fabricated and duplicated seven times. Four different labial frenulum heights were tested for stresses occurring on the palatal cameo surface. The strains were measured with strain gauges placed on 5 different locations and the stresses were calculated. To mimic occlusal forces bilaterally 100 N of load was applied from the premolar and molar region.
A statistically significant association between the height of the labial frenulum and the calculated stresses and strains was shown (
Within the limitations of this
Url:
DOI: 10.4047/jap.2013.5.4.409
PubMed: 24353878
PubMed Central: 3865195
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<author><name sortKey="Bilhan, Hakan" sort="Bilhan, Hakan" uniqKey="Bilhan H" first="Hakan" last="Bilhan">Hakan Bilhan</name>
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<author><name sortKey="Baysal, Gokhan" sort="Baysal, Gokhan" uniqKey="Baysal G" first="Gokhan" last="Baysal">Gokhan Baysal</name>
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<author><name sortKey="Bozdag, Ergun" sort="Bozdag, Ergun" uniqKey="Bozdag E" first="Ergun" last="Bozdag">Ergun Bozdag</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">The impact of frenulum height on strains in maxillary denture bases</title>
<author><name sortKey="Cilingir, Altug" sort="Cilingir, Altug" uniqKey="Cilingir A" first="Altug" last="Cilingir">Altug Cilingir</name>
<affiliation wicri:level="1"><nlm:aff id="A1">Istanbul University, Faculty of Dentistry, Department of Prosthodontics, Istanbul, Turkey.</nlm:aff>
<country xml:lang="fr" wicri:curation="lc">Turquie</country>
<wicri:regionArea>Istanbul University, Faculty of Dentistry, Department of Prosthodontics, Istanbul</wicri:regionArea>
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</author>
<author><name sortKey="Bilhan, Hakan" sort="Bilhan, Hakan" uniqKey="Bilhan H" first="Hakan" last="Bilhan">Hakan Bilhan</name>
<affiliation wicri:level="1"><nlm:aff id="A1">Istanbul University, Faculty of Dentistry, Department of Prosthodontics, Istanbul, Turkey.</nlm:aff>
<country xml:lang="fr" wicri:curation="lc">Turquie</country>
<wicri:regionArea>Istanbul University, Faculty of Dentistry, Department of Prosthodontics, Istanbul</wicri:regionArea>
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<author><name sortKey="Baysal, Gokhan" sort="Baysal, Gokhan" uniqKey="Baysal G" first="Gokhan" last="Baysal">Gokhan Baysal</name>
<affiliation wicri:level="1"><nlm:aff id="A2">Istanbul Technical University, Faculty of Mechanical Engineering, Laboratory of Biomechanics, Istanbul, Turkey.</nlm:aff>
<country xml:lang="fr" wicri:curation="lc">Turquie</country>
<wicri:regionArea>Istanbul Technical University, Faculty of Mechanical Engineering, Laboratory of Biomechanics, Istanbul</wicri:regionArea>
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<author><name sortKey="Sunbuloglu, Emin" sort="Sunbuloglu, Emin" uniqKey="Sunbuloglu E" first="Emin" last="Sunbuloglu">Emin Sunbuloglu</name>
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<wicri:regionArea>Istanbul Technical University, Faculty of Mechanical Engineering, Laboratory of Biomechanics, Istanbul</wicri:regionArea>
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<author><name sortKey="Bozdag, Ergun" sort="Bozdag, Ergun" uniqKey="Bozdag E" first="Ergun" last="Bozdag">Ergun Bozdag</name>
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<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="2013">2013</date>
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<front><div type="abstract" xml:lang="en"><sec><title>PURPOSE</title>
<p>The midline fracture of maxillary complete dentures is a frequently encountered complication. The purpose of this study was to assess the effect of frenulum height on midline strains of maxillary complete dentures.</p>
</sec>
<sec><title>MATERIALS AND METHODS</title>
<p>A removable maxillary complete denture was fabricated and duplicated seven times. Four different labial frenulum heights were tested for stresses occurring on the palatal cameo surface. The strains were measured with strain gauges placed on 5 different locations and the stresses were calculated. To mimic occlusal forces bilaterally 100 N of load was applied from the premolar and molar region.</p>
</sec>
<sec><title>RESULTS</title>
<p>A statistically significant association between the height of the labial frenulum and the calculated stresses and strains was shown (<italic>P</italic>
<.05) predominantly on the midline and especially on the incisive papilla. The results showed that stress on the anterior midline of the maxillary complete denture increases with a higher labial frenulum.</p>
</sec>
<sec><title>CONCLUSION</title>
<p>Within the limitations of this <italic>in vitro</italic>
study, it can be concluded that the stress on the anterior midline of the maxillary complete denture increases with a higher labial frenulum. Surgical or mechanical precautions should be taken to prevent short-term failure of maxillary complete dentures due to stress concentration and low cycle fatigue tendency at the labial frenulum region.</p>
</sec>
</div>
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<pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<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">24353878</article-id>
<article-id pub-id-type="pmc">3865195</article-id>
<article-id pub-id-type="doi">10.4047/jap.2013.5.4.409</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>The impact of frenulum height on strains in maxillary denture bases</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" corresp="yes"><name><surname>Cilingir</surname>
<given-names>Altug</given-names>
</name>
<degrees>DDS</degrees>
<degrees>PhD</degrees>
<xref ref-type="aff" rid="A1">1</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Bilhan</surname>
<given-names>Hakan</given-names>
</name>
<degrees>DDS</degrees>
<degrees>PhD</degrees>
<xref ref-type="aff" rid="A1">1</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Baysal</surname>
<given-names>Gokhan</given-names>
</name>
<degrees>Bsc</degrees>
<xref ref-type="aff" rid="A2">2</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Sunbuloglu</surname>
<given-names>Emin</given-names>
</name>
<degrees>PhD</degrees>
<xref ref-type="aff" rid="A2">2</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Bozdag</surname>
<given-names>Ergun</given-names>
</name>
<degrees>PhD</degrees>
<xref ref-type="aff" rid="A2">2</xref>
</contrib>
</contrib-group>
<aff id="A1"><label>1</label>
Istanbul University, Faculty of Dentistry, Department of Prosthodontics, Istanbul, Turkey.</aff>
<aff id="A2"><label>2</label>
Istanbul Technical University, Faculty of Mechanical Engineering, Laboratory of Biomechanics, Istanbul, Turkey.</aff>
<author-notes><corresp>Corresponding author: Altug Cilingir. Istanbul University, Faculty of Dentistry, Department of Prosthodontics, 2<sup>nd</sup>
floor, Çapa 34093 Istanbul, Turkey. Tel. 902124142020 (30256): <email>cilingir@istanbul.edu.tr</email>
</corresp>
</author-notes>
<pub-date pub-type="ppub"><month>11</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="epub"><day>28</day>
<month>11</month>
<year>2013</year>
</pub-date>
<volume>5</volume>
<issue>4</issue>
<fpage>409</fpage>
<lpage>415</lpage>
<history><date date-type="received"><day>26</day>
<month>4</month>
<year>2013</year>
</date>
<date date-type="rev-recd"><day>18</day>
<month>9</month>
<year>2013</year>
</date>
<date date-type="accepted"><day>07</day>
<month>11</month>
<year>2013</year>
</date>
</history>
<permissions><copyright-statement>© 2013 The Korean Academy of Prosthodontics</copyright-statement>
<copyright-year>2013</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 midline fracture of maxillary complete dentures is a frequently encountered complication. The purpose of this study was to assess the effect of frenulum height on midline strains of maxillary complete dentures.</p>
</sec>
<sec><title>MATERIALS AND METHODS</title>
<p>A removable maxillary complete denture was fabricated and duplicated seven times. Four different labial frenulum heights were tested for stresses occurring on the palatal cameo surface. The strains were measured with strain gauges placed on 5 different locations and the stresses were calculated. To mimic occlusal forces bilaterally 100 N of load was applied from the premolar and molar region.</p>
</sec>
<sec><title>RESULTS</title>
<p>A statistically significant association between the height of the labial frenulum and the calculated stresses and strains was shown (<italic>P</italic>
<.05) predominantly on the midline and especially on the incisive papilla. The results showed that stress on the anterior midline of the maxillary complete denture increases with a higher labial frenulum.</p>
</sec>
<sec><title>CONCLUSION</title>
<p>Within the limitations of this <italic>in vitro</italic>
study, it can be concluded that the stress on the anterior midline of the maxillary complete denture increases with a higher labial frenulum. Surgical or mechanical precautions should be taken to prevent short-term failure of maxillary complete dentures due to stress concentration and low cycle fatigue tendency at the labial frenulum region.</p>
</sec>
</abstract>
<kwd-group><kwd>Acrylic</kwd>
<kwd>Complete denture</kwd>
<kwd>Frenulum</kwd>
<kwd>Midline fracture</kwd>
<kwd>Strain gauge</kwd>
<kwd>Experimental stress analysis</kwd>
</kwd-group>
</article-meta>
</front>
<floats-group><fig id="F1" orientation="portrait" position="float"><label>Fig. 1</label>
<caption><p>Positions of the strain gauges on a maxillary complete denture.</p>
</caption>
<graphic xlink:href="jap-5-409-g001"></graphic>
</fig>
<table-wrap id="T1" orientation="portrait" position="float"><label>Table 1</label>
<caption><p>Statistical comparison of the 4 groups in terms of stress values</p>
</caption>
<graphic xlink:href="jap-5-409-i001"></graphic>
<table-wrap-foot><fn><p>Kruskal Wallis Test <sup>*</sup>
<italic>P</italic>
<.05. Max: maximum, Min: minimum.</p>
</fn>
</table-wrap-foot>
</table-wrap>
<table-wrap id="T2" orientation="portrait" position="float"><label>Table 2</label>
<caption><p>Statistical comparison of each group with each other</p>
</caption>
<graphic xlink:href="jap-5-409-i002"></graphic>
<table-wrap-foot><fn><p>Post Hoc Mann Whitney U test results. Max: maximum, Min: minimum.</p>
</fn>
</table-wrap-foot>
</table-wrap>
</floats-group>
</pmc>
</record>
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