Control and reduction of peak temperature in self-curing resins
Identifieur interne : 004391 ( Ncbi/Merge ); précédent : 004390; suivant : 004392Control and reduction of peak temperature in self-curing resins
Auteurs : R. Schiavetti ; G. De Vico ; A. Casucci ; F. Covello ; L. Ottria ; G. Sannino ; A. BarlattaniSource :
- Oral & Implantology [ 1974-5648 ] ; 2010.
Abstract
The aim of this experimental study was to reduce the exothermic reaction during curing of the resins to cold. The significant exotherm generated by the reaction of polymerization of the resin curing involves many clinical complications including the high risk of necrosis against tooth.
They were used four different types of self curing resins all based on methyl methacrylate, Jet Kit, Major Dentin, Dura Lay, Temporary Cold. The reaction of polymerization of the resins was done in Teflon pans and was monitored by a thermocouple which recorded the highest level reached by each temperature resin with and without additive. The polymerization reaction took place for each resin in the presence of an essential oil, the terpinolene, which acted as a “chain transfer” and different temperatures were recorded.
Resins Dura Lay and Jet kit showed a reduction of very high temperature in the presence of terpinolene, with a statistically significant difference compared to the same reaction without terpinolene Major resin dentin in the presence of the additive has reduced by 8.4°C peak temperature. Resin Temporary Cold has showed benefits with respect to peak temperature, but the reaction was much more 'consistent presence of the additive.
The system through which the chain transfer acts to lower the temperature of the reaction is that of chain transfer. Namely that interfere with the reaction of the polymer chains, by transferring these acrylic radicals are no longer active, ie, no longer able to bind to other monomer units, thus avoiding the excessive growth of macromolecules which are those that determine the temperature rise. This leads to the formation of more polymer chains with lower molecular weight.
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PubMed: 23285365
PubMed Central: 3415349
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Control and reduction of peak temperature in self-curing resins</title><author><name sortKey="Schiavetti, R" sort="Schiavetti, R" uniqKey="Schiavetti R" first="R." last="Schiavetti">R. Schiavetti</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author><author><name sortKey="De Vico, G" sort="De Vico, G" uniqKey="De Vico G" first="G." last="De Vico">G. De Vico</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author><author><name sortKey="Casucci, A" sort="Casucci, A" uniqKey="Casucci A" first="A." last="Casucci">A. Casucci</name><affiliation><nlm:aff id="af2-0046-4-control_schiavetti"> University of Siena, Siena, Italy, Department of Fixed Prosthodontics</nlm:aff><wicri:noCountry code="subfield">Department of Fixed Prosthodontics</wicri:noCountry></affiliation></author><author><name sortKey="Covello, F" sort="Covello, F" uniqKey="Covello F" first="F." last="Covello">F. Covello</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author><author><name sortKey="Ottria, L" sort="Ottria, L" uniqKey="Ottria L" first="L." last="Ottria">L. Ottria</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author><author><name sortKey="Sannino, G" sort="Sannino, G" uniqKey="Sannino G" first="G." last="Sannino">G. Sannino</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author><author><name sortKey="Barlattani, A" sort="Barlattani, A" uniqKey="Barlattani A" first="A." last="Barlattani">A. Barlattani</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">23285365</idno><idno type="pmc">3415349</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3415349</idno><idno type="RBID">PMC:3415349</idno><date when="2010">2010</date><idno type="wicri:Area/Pmc/Corpus">002508</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002508</idno><idno type="wicri:Area/Pmc/Curation">002508</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">002508</idno><idno type="wicri:Area/Pmc/Checkpoint">002422</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">002422</idno><idno type="wicri:Area/Ncbi/Merge">004391</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Control and reduction of peak temperature in self-curing resins</title><author><name sortKey="Schiavetti, R" sort="Schiavetti, R" uniqKey="Schiavetti R" first="R." last="Schiavetti">R. Schiavetti</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author><author><name sortKey="De Vico, G" sort="De Vico, G" uniqKey="De Vico G" first="G." last="De Vico">G. De Vico</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author><author><name sortKey="Casucci, A" sort="Casucci, A" uniqKey="Casucci A" first="A." last="Casucci">A. Casucci</name><affiliation><nlm:aff id="af2-0046-4-control_schiavetti"> University of Siena, Siena, Italy, Department of Fixed Prosthodontics</nlm:aff><wicri:noCountry code="subfield">Department of Fixed Prosthodontics</wicri:noCountry></affiliation></author><author><name sortKey="Covello, F" sort="Covello, F" uniqKey="Covello F" first="F." last="Covello">F. Covello</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author><author><name sortKey="Ottria, L" sort="Ottria, L" uniqKey="Ottria L" first="L." last="Ottria">L. Ottria</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author><author><name sortKey="Sannino, G" sort="Sannino, G" uniqKey="Sannino G" first="G." last="Sannino">G. Sannino</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author><author><name sortKey="Barlattani, A" sort="Barlattani, A" uniqKey="Barlattani A" first="A." last="Barlattani">A. Barlattani</name><affiliation><nlm:aff id="af1-0046-4-control_schiavetti"> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</nlm:aff><wicri:noCountry code="subfield">Department of Odontostomatological Science</wicri:noCountry></affiliation></author></analytic><series><title level="j">Oral & Implantology</title><idno type="ISSN">1974-5648</idno><idno type="eISSN">2035-2468</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><title>SUMMARY</title><sec><title>Introduction.</title><p>The aim of this experimental study was to reduce the exothermic reaction during curing of the resins to cold. The significant exotherm generated by the reaction of polymerization of the resin curing involves many clinical complications including the high risk of necrosis against tooth.</p></sec><sec><title>Material and methods.</title><p>They were used four different types of self curing resins all based on methyl methacrylate, Jet Kit, Major Dentin, Dura Lay, Temporary Cold. The reaction of polymerization of the resins was done in Teflon pans and was monitored by a thermocouple which recorded the highest level reached by each temperature resin with and without additive. The polymerization reaction took place for each resin in the presence of an essential oil, the terpinolene, which acted as a “chain transfer” and different temperatures were recorded.</p></sec><sec><title>Results.</title><p>Resins Dura Lay and Jet kit showed a reduction of very high temperature in the presence of terpinolene, with a statistically significant difference compared to the same reaction without terpinolene Major resin dentin in the presence of the additive has reduced by 8.4°C peak temperature. Resin Temporary Cold has showed benefits with respect to peak temperature, but the reaction was much more 'consistent presence of the additive.</p></sec><sec><title>Discussion.</title><p>The system through which the chain transfer acts to lower the temperature of the reaction is that of chain transfer. Namely that interfere with the reaction of the polymer chains, by transferring these acrylic radicals are no longer active, ie, no longer able to bind to other monomer units, thus avoiding the excessive growth of macromolecules which are those that determine the temperature rise. This leads to the formation of more polymer chains with lower molecular weight.</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>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Oral Implantol (Rome)</journal-id><journal-id journal-id-type="iso-abbrev">Oral Implantol (Rome)</journal-id><journal-id journal-id-type="publisher-id">OAI</journal-id><journal-title-group><journal-title>Oral & Implantology</journal-title></journal-title-group><issn pub-type="ppub">1974-5648</issn><issn pub-type="epub">2035-2468</issn><publisher><publisher-name>CIC Edizioni Internationali</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">23285365</article-id><article-id pub-id-type="pmc">3415349</article-id><article-id pub-id-type="publisher-id">oai-2-3-21</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title>Control and reduction of peak temperature in self-curing resins</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>SCHIAVETTI</surname><given-names>R.</given-names></name><xref ref-type="aff" rid="af1-0046-4-control_schiavetti"><sup>1</sup></xref><xref ref-type="corresp" rid="c1-0046-4-control_schiavetti"></xref></contrib><contrib contrib-type="author"><name><surname>DE VICO</surname><given-names>G.</given-names></name><xref ref-type="aff" rid="af1-0046-4-control_schiavetti"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>CASUCCI</surname><given-names>A.</given-names></name><xref ref-type="aff" rid="af2-0046-4-control_schiavetti"><sup>2</sup></xref></contrib><contrib contrib-type="author"><name><surname>COVELLO</surname><given-names>F.</given-names></name><xref ref-type="aff" rid="af1-0046-4-control_schiavetti"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>OTTRIA</surname><given-names>L.</given-names></name><xref ref-type="aff" rid="af1-0046-4-control_schiavetti"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>SANNINO</surname><given-names>G.</given-names></name><xref ref-type="aff" rid="af1-0046-4-control_schiavetti"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>BARLATTANI</surname><given-names>A.</given-names></name><xref ref-type="aff" rid="af1-0046-4-control_schiavetti"><sup>1</sup></xref></contrib></contrib-group><aff id="af1-0046-4-control_schiavetti"><label>1</label> University of Rome “Tor Vergata”, Rome, Italy, Department of Odontostomatological Science</aff><aff id="af2-0046-4-control_schiavetti"><label>2</label> University of Siena, Siena, Italy, Department of Fixed Prosthodontics</aff><author-notes><corresp id="c1-0046-4-control_schiavetti">Correspondecne to: Dott. Remo Schiavetti, Tel.: +393397898981, E-mail: <email>remoschiavetti@gmail.com</email></corresp></author-notes><pub-date pub-type="epub"><day>20</day><month>4</month><year>2010</year></pub-date><pub-date pub-type="collection"><season>Jul-Sep</season><year>2009</year></pub-date><volume>2</volume><issue>3</issue><fpage>21</fpage><lpage>26</lpage><permissions><copyright-statement>©2009 CIC Edizioni Internazionali, Rome, Italy</copyright-statement><copyright-year>2009</copyright-year></permissions><abstract><title>SUMMARY</title><sec><title>Introduction.</title><p>The aim of this experimental study was to reduce the exothermic reaction during curing of the resins to cold. The significant exotherm generated by the reaction of polymerization of the resin curing involves many clinical complications including the high risk of necrosis against tooth.</p></sec><sec><title>Material and methods.</title><p>They were used four different types of self curing resins all based on methyl methacrylate, Jet Kit, Major Dentin, Dura Lay, Temporary Cold. The reaction of polymerization of the resins was done in Teflon pans and was monitored by a thermocouple which recorded the highest level reached by each temperature resin with and without additive. The polymerization reaction took place for each resin in the presence of an essential oil, the terpinolene, which acted as a “chain transfer” and different temperatures were recorded.</p></sec><sec><title>Results.</title><p>Resins Dura Lay and Jet kit showed a reduction of very high temperature in the presence of terpinolene, with a statistically significant difference compared to the same reaction without terpinolene Major resin dentin in the presence of the additive has reduced by 8.4°C peak temperature. Resin Temporary Cold has showed benefits with respect to peak temperature, but the reaction was much more 'consistent presence of the additive.</p></sec><sec><title>Discussion.</title><p>The system through which the chain transfer acts to lower the temperature of the reaction is that of chain transfer. Namely that interfere with the reaction of the polymer chains, by transferring these acrylic radicals are no longer active, ie, no longer able to bind to other monomer units, thus avoiding the excessive growth of macromolecules which are those that determine the temperature rise. This leads to the formation of more polymer chains with lower molecular weight.</p></sec></abstract><trans-abstract xml:lang="it"><title>RIASSUNTO</title><sec><title>Introduzione.</title><p>Lo scopo di questo studio sperimentale è stato quello di ridurre la reazione esotermica durante la polimerizzazione delle resine a freddo. La notevole esotermia generata dalla reazione di polimerizzazione delle resine autopolimerizzanti comporta numerose complicanze cliniche tra le quali l’elevato rischio di necrosi a carico dei denti vitali.</p></sec><sec><title>Materiali e metodi.</title><p>Sono state utilizzate quattro diversi tipi di resine autopolimerizzabili tutte a base di metilmetacrilato, Jet Kit, Major Dentine, Dura Lay, Temporary Cold. La reazione di polimerizzazione delle resine avveniva in vaschette di teflon e veniva monitorata tramite una termocoppia che registrava le temperarure massime raggiunte da ogni resina con e senza additivo. La reazione di polimerizzazione è avvenuta per ogni resina anche in presenza di un olio essenziale, il terpinolene, che agiva da “chain transfer” cioè traserimento di catena e venivano registrate le differnti temperature raggiunte.</p></sec><sec><title>Risultati.</title><p>Le resine Dura Lay e Jet Kit hanno mostrato una riduzione di temperatura molto elevata in presenza del terpinolene, con una differenza statisticamente significativa rispetto alla stessa reazione senza terpinolene La resina Major Dentine in presenza dell’additivo ha ridotto di 8,4°C il picco termico. La resina Temporary Cold non ha mostrtao benefici in relazione al picco termico, ma la reazione è risultata molto più omogenea in presenza dell’additivo.</p></sec><sec><title>Discussione.</title><p>Il sistema attraverso cui il chain transfer agisce determinando un abbassamento di temperatura della reazione è quello del trasferimento di catena. Ovverosia questo interferisce nella reazione delle catene polimeriche, trasferendo a queste radicali acrilici non più attivi, cioè non più in grado di legarsi ad altre unità monomeriche, evitando così l’eccessivo accrescimento delle macromolecole che sono quelle che determinano l’incremento della temperatura. Tutto ciò porta alla formazione di più catene polimeriche con minor peso molecolare.</p></sec></trans-abstract><kwd-group><kwd>peak temperature</kwd><kwd>polymerization</kwd><kwd>resins</kwd></kwd-group></article-meta></front></pmc><affiliations><list></list><tree><noCountry><name sortKey="Barlattani, A" sort="Barlattani, A" uniqKey="Barlattani A" first="A." last="Barlattani">A. Barlattani</name><name sortKey="Casucci, A" sort="Casucci, A" uniqKey="Casucci A" first="A." last="Casucci">A. Casucci</name><name sortKey="Covello, F" sort="Covello, F" uniqKey="Covello F" first="F." last="Covello">F. Covello</name><name sortKey="De Vico, G" sort="De Vico, G" uniqKey="De Vico G" first="G." last="De Vico">G. De Vico</name><name sortKey="Ottria, L" sort="Ottria, L" uniqKey="Ottria L" first="L." last="Ottria">L. Ottria</name><name sortKey="Sannino, G" sort="Sannino, G" uniqKey="Sannino G" first="G." last="Sannino">G. Sannino</name><name sortKey="Schiavetti, R" sort="Schiavetti, R" uniqKey="Schiavetti R" first="R." last="Schiavetti">R. Schiavetti</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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