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Article: Susceptibility of a polycaprolactone-based root canal filling material to degradation. I. Akaline hydrolysis

TitleSusceptibility of a polycaprolactone-based root canal filling material to degradation. I. Akaline hydrolysis
Authors
Issue Date2005
PublisherElsevier Inc. The Journal's web site is located at http://www.jendodon.com
Citation
Journal of Endodontics, 2005, v. 31 n. 8, p. 593-598 How to Cite?
AbstractPolycaprolactone, a thermoplastic aliphatic polyester, is reportedly susceptible to both alkaline and enzymatic hydrolyzes. This screening study examined the susceptibility of Resilon, a polycaprolactone-based root filling composite, to alkaline hydrolysis. There were 15-mm diameter disks of Resilon and Obtura gutta-percha prepared by compressive molding and immersed in 20% sodium ethoxide for 20 or 60 min. Control disks were immersed in ethanol for 60 min. These disks were examined using field-emission scanning electron microscopy and energy dispersive X-ray analysis. For Resilon, the surface resinous component was hydrolyzed after 20 min of sodium ethoxide immersion, exposing the spherulitic polymer structure and subsurface glass and bismuth oxychloride fillers. More severe erosion occurred after 60 min of sodium ethoxide treatment. Gutta-percha was unaffected after immersion in sodium ethoxide. As Resilon is susceptible to alkaline hydrolysis, it is possible that enzymatic hydrolysis may occur. Biodegradation of Resilon by bacterial/salivary enzymes and endodontically relevant bacteria warrants further investigation.
Persistent Identifierhttp://hdl.handle.net/10722/67181
ISSN
2015 Impact Factor: 2.904
2015 SCImago Journal Rankings: 1.681
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorTay, FRen_HK
dc.contributor.authorPashley, DHen_HK
dc.contributor.authorWilliams, MCen_HK
dc.contributor.authorRaina, Ren_HK
dc.contributor.authorLoushine, RJen_HK
dc.contributor.authorWeller, RNen_HK
dc.contributor.authorKimbrough, WFen_HK
dc.contributor.authorKing, NMen_HK
dc.date.accessioned2010-09-06T05:52:38Z-
dc.date.available2010-09-06T05:52:38Z-
dc.date.issued2005en_HK
dc.identifier.citationJournal of Endodontics, 2005, v. 31 n. 8, p. 593-598en_HK
dc.identifier.issn0099-2399en_HK
dc.identifier.urihttp://hdl.handle.net/10722/67181-
dc.description.abstractPolycaprolactone, a thermoplastic aliphatic polyester, is reportedly susceptible to both alkaline and enzymatic hydrolyzes. This screening study examined the susceptibility of Resilon, a polycaprolactone-based root filling composite, to alkaline hydrolysis. There were 15-mm diameter disks of Resilon and Obtura gutta-percha prepared by compressive molding and immersed in 20% sodium ethoxide for 20 or 60 min. Control disks were immersed in ethanol for 60 min. These disks were examined using field-emission scanning electron microscopy and energy dispersive X-ray analysis. For Resilon, the surface resinous component was hydrolyzed after 20 min of sodium ethoxide immersion, exposing the spherulitic polymer structure and subsurface glass and bismuth oxychloride fillers. More severe erosion occurred after 60 min of sodium ethoxide treatment. Gutta-percha was unaffected after immersion in sodium ethoxide. As Resilon is susceptible to alkaline hydrolysis, it is possible that enzymatic hydrolysis may occur. Biodegradation of Resilon by bacterial/salivary enzymes and endodontically relevant bacteria warrants further investigation.-
dc.languageengen_HK
dc.publisherElsevier Inc. The Journal's web site is located at http://www.jendodon.comen_HK
dc.relation.ispartofJournal of Endodonticsen_HK
dc.subject.meshBiodegradation, Environmental-
dc.subject.meshComposite Resins - chemistry-
dc.subject.meshEthanol - analogs & derivatives-
dc.subject.meshMicroscopy, Electron, Transmission-
dc.subject.meshRoot Canal Filling Materials - chemistry-
dc.titleSusceptibility of a polycaprolactone-based root canal filling material to degradation. I. Akaline hydrolysisen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0099-2399&volume=31&issue=3&spage=593&epage=598&date=2005&atitle=Susceptibility+of+a+polycaprolactone-based+root+canal+filling+material+to+degradation.++I.+Akaline+hydrolysis.en_HK
dc.identifier.emailTay, FR: franktay@hkucc.hku.hken_HK
dc.identifier.emailKing, NM: profnigelking@mac.comen_HK
dc.identifier.authorityKing, NM=rp00006en_HK
dc.identifier.doi10.1097/01.don.0000152301.72828.61-
dc.identifier.pmid16044043-
dc.identifier.hkuros102734en_HK
dc.identifier.volume31-
dc.identifier.issue8-
dc.identifier.spage593-
dc.identifier.epage598-
dc.identifier.isiWOS:000230768200007-
dc.publisher.placeUnited States-

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