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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Alveolar ridge reduction after tooth extraction in adolescents: an animal study</title><author><name sortKey="Sun, Zongyang" sort="Sun, Zongyang" uniqKey="Sun Z" first="Zongyang" last="Sun">Zongyang Sun</name></author><author><name sortKey="Herring, Susan W" sort="Herring, Susan W" uniqKey="Herring S" first="Susan W." last="Herring">Susan W. Herring</name></author><author><name sortKey="Tee, Boon Ching" sort="Tee, Boon Ching" uniqKey="Tee B" first="Boon Ching" last="Tee">Boon Ching Tee</name></author><author><name sortKey="Gales, Jordan" sort="Gales, Jordan" uniqKey="Gales J" first="Jordan" last="Gales">Jordan Gales</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">23380583</idno><idno type="pmc">3665758</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3665758</idno><idno type="RBID">PMC:3665758</idno><idno type="doi">10.1016/j.archoralbio.2012.12.013</idno><date when="2013">2013</date><idno type="wicri:Area/Pmc/Corpus">002585</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002585</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Alveolar ridge reduction after tooth extraction in adolescents: an animal study</title><author><name sortKey="Sun, Zongyang" sort="Sun, Zongyang" uniqKey="Sun Z" first="Zongyang" last="Sun">Zongyang Sun</name></author><author><name sortKey="Herring, Susan W" sort="Herring, Susan W" uniqKey="Herring S" first="Susan W." last="Herring">Susan W. Herring</name></author><author><name sortKey="Tee, Boon Ching" sort="Tee, Boon Ching" uniqKey="Tee B" first="Boon Ching" last="Tee">Boon Ching Tee</name></author><author><name sortKey="Gales, Jordan" sort="Gales, Jordan" uniqKey="Gales J" first="Jordan" last="Gales">Jordan Gales</name></author></analytic><series><title level="j">Archives of oral biology</title><idno type="ISSN">0003-9969</idno><idno type="eISSN">1879-1506</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="S1"><title>Objective</title><p id="P2">The mechanism for tooth extraction induced residual alveolar ridge reduction (RRR) during adolescence is poorly understood. This study investigated the alveolar bone morphology, growth, resorption and functional loading at normal and extraction sites using an adolescent pig model.</p></sec><sec id="S2"><title>Design</title><p id="P3">Sixteen 3-month-old pigs were divided into two groups – immediate post-extraction (IE) and 6-week post-extraction (SE). The IE group received an extraction of one deciduous mandibular molar, immediately followed by a final experiment to record masseter muscle EMGs and strains from the buccal surface of the extraction and contralateral non-extraction sites during function (mastication). The SE group was given the same tooth extraction, then kept for 6 weeks before the same final functional recording as the IE group. Both groups also received baseline (pre-extraction) EMGs and fluorescent vital stains 10 and 3 days before the final functional recording. Immediately after the final functional recording, animals were euthanized and alveolar bone specimens from extraction and contralateral non-extraction sites were collected and used to analyze alveolar bone morphology, apposition and resorption based on fluorescent and hematoxylin and eosin stained histological sections.</p></sec><sec id="S3"><title>Results</title><p id="P4">At control sites (IE-extraction, IE-non-extraction and SE-non-extraction), the alveolar ridges grew gingivally and buccally. Bone formation characterized the buccal surface and lingual bundle bone, whereas resorption characterized the lingual surface and buccal bundle bone. The SE-extraction sites showed three major alterations: convergence of the buccal and lingual gingival crests, loss of apposition on the lingual bundle bone, and decelerated growth at the entire buccal surface. These alterations likely resulted from redirected crestal growth as part of the socket healing process, loss of tongue pressure to the lingual side of the teeth which normally provides mechanical stimulation for dental arch expansion, and masticatory underloading during the initial post-extraction period, respectively.</p></sec><sec id="S4"><title>Conclusions</title><p id="P5">These data indicate that the initial phase of RRR in adolescents is a product of modified growth, not resorption, possibly because of decreased mechanical stimulation at the extraction site.</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">0116711</journal-id><journal-id journal-id-type="pubmed-jr-id">809</journal-id><journal-id journal-id-type="nlm-ta">Arch Oral Biol</journal-id><journal-id journal-id-type="iso-abbrev">Arch. Oral Biol.</journal-id><journal-title-group><journal-title>Archives of oral biology</journal-title></journal-title-group><issn pub-type="ppub">0003-9969</issn><issn pub-type="epub">1879-1506</issn></journal-meta><article-meta><article-id pub-id-type="pmid">23380583</article-id><article-id pub-id-type="pmc">3665758</article-id><article-id pub-id-type="doi">10.1016/j.archoralbio.2012.12.013</article-id><article-id pub-id-type="manuscript">NIHMS439580</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Alveolar ridge reduction after tooth extraction in adolescents: an animal study</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Sun</surname><given-names>Zongyang</given-names></name><degrees>DDS, PhD</degrees></contrib><contrib contrib-type="author"><name><surname>Herring</surname><given-names>Susan W.</given-names></name><degrees>PhD</degrees></contrib><contrib contrib-type="author"><name><surname>Tee</surname><given-names>Boon Ching</given-names></name><degrees>BS</degrees></contrib><contrib contrib-type="author"><name><surname>Gales</surname><given-names>Jordan</given-names></name><degrees>BS</degrees></contrib></contrib-group><author-notes><corresp id="FN1">Corresponding author: Zongyang Sun, Rm 4088 Postle Hall, 305 W 12th Ave, Columbus, OH 43210, <email>sun.254@osu.edu</email>, Phone: 614-247-7944; Fax: 614-688-3077</corresp></author-notes><pub-date pub-type="nihms-submitted"><day>1</day><month>2</month><year>2013</year></pub-date><pub-date pub-type="epub"><day>4</day><month>2</month><year>2013</year></pub-date><pub-date pub-type="ppub"><month>7</month><year>2013</year></pub-date><pub-date pub-type="pmc-release"><day>01</day><month>7</month><year>2014</year></pub-date><volume>58</volume><issue>7</issue><fpage>813</fpage><lpage>825</lpage><permissions><copyright-statement>© 2013 Elsevier Ltd. All rights reserved.</copyright-statement><copyright-year>2013</copyright-year></permissions><abstract><sec id="S1"><title>Objective</title><p id="P2">The mechanism for tooth extraction induced residual alveolar ridge reduction (RRR) during adolescence is poorly understood. This study investigated the alveolar bone morphology, growth, resorption and functional loading at normal and extraction sites using an adolescent pig model.</p></sec><sec id="S2"><title>Design</title><p id="P3">Sixteen 3-month-old pigs were divided into two groups – immediate post-extraction (IE) and 6-week post-extraction (SE). The IE group received an extraction of one deciduous mandibular molar, immediately followed by a final experiment to record masseter muscle EMGs and strains from the buccal surface of the extraction and contralateral non-extraction sites during function (mastication). The SE group was given the same tooth extraction, then kept for 6 weeks before the same final functional recording as the IE group. Both groups also received baseline (pre-extraction) EMGs and fluorescent vital stains 10 and 3 days before the final functional recording. Immediately after the final functional recording, animals were euthanized and alveolar bone specimens from extraction and contralateral non-extraction sites were collected and used to analyze alveolar bone morphology, apposition and resorption based on fluorescent and hematoxylin and eosin stained histological sections.</p></sec><sec id="S3"><title>Results</title><p id="P4">At control sites (IE-extraction, IE-non-extraction and SE-non-extraction), the alveolar ridges grew gingivally and buccally. Bone formation characterized the buccal surface and lingual bundle bone, whereas resorption characterized the lingual surface and buccal bundle bone. The SE-extraction sites showed three major alterations: convergence of the buccal and lingual gingival crests, loss of apposition on the lingual bundle bone, and decelerated growth at the entire buccal surface. These alterations likely resulted from redirected crestal growth as part of the socket healing process, loss of tongue pressure to the lingual side of the teeth which normally provides mechanical stimulation for dental arch expansion, and masticatory underloading during the initial post-extraction period, respectively.</p></sec><sec id="S4"><title>Conclusions</title><p id="P5">These data indicate that the initial phase of RRR in adolescents is a product of modified growth, not resorption, possibly because of decreased mechanical stimulation at the extraction site.</p></sec></abstract><kwd-group><kwd>Bone remodeling</kwd><kwd>alveolar bone</kwd><kwd>tooth extraction</kwd><kwd>bone strain</kwd><kwd>pig</kwd></kwd-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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