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Article: Susceptibility of a polycaprolactone-based root canal filling material to degradation. III. Turbdimetric evaluation of enzymatic hydrolysis

TitleSusceptibility of a polycaprolactone-based root canal filling material to degradation. III. Turbdimetric evaluation of enzymatic hydrolysis
Authors
Issue Date2007
PublisherElsevier Inc. The Journal's web site is located at http://www.jendodon.com
Citation
Journal of Endodontics, 2007, v. 33 n. 8, p. 952-956 How to Cite?
AbstractThe susceptibility of Resilon (Pentron Clinical Technologies, Wallingford, CT) to biotic biodegradation by two hydrolases, lipase PS and cholesterol esterase, was investigated with a turbidimetric approach by measuring the optical density reductions in aqueous emulsions containing dissolved, filtered, surfactant-stabilized polymeric components of Resilon. Polycaprolactone, the major polymeric component of Resilon, was also examined in a similar manner using equivalent or a four-fold increase in enzyme concentration. Optical density time plots were characterized by an initially linear steep reduction in optical density, from which the reaction rates were derived. For both enzymes, the rates of hydrolysis for Resilon were much faster than those of polycaprolactone at 1x or even 4x enzyme concentration. Field-emission scanning electron microscopy of air-dried Resilon and polycaprolactone emulsions revealed the presence of spherical polymer droplets that appeared deformed, pitted, or much reduced in dimensions after enzymatic hydrolysis.
Persistent Identifierhttp://hdl.handle.net/10722/67066
ISSN
2015 Impact Factor: 2.904
2015 SCImago Journal Rankings: 1.681
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHiraishi, Nen_HK
dc.contributor.authorYau, JYYen_HK
dc.contributor.authorLoushine, RJen_HK
dc.contributor.authorArmstrong, SRen_HK
dc.contributor.authorWeller, RNen_HK
dc.contributor.authorKing, NMen_HK
dc.contributor.authorPashley, DHen_HK
dc.contributor.authorTay, FRen_HK
dc.date.accessioned2010-09-06T05:51:40Z-
dc.date.available2010-09-06T05:51:40Z-
dc.date.issued2007en_HK
dc.identifier.citationJournal of Endodontics, 2007, v. 33 n. 8, p. 952-956en_HK
dc.identifier.issn0099-2399en_HK
dc.identifier.urihttp://hdl.handle.net/10722/67066-
dc.description.abstractThe susceptibility of Resilon (Pentron Clinical Technologies, Wallingford, CT) to biotic biodegradation by two hydrolases, lipase PS and cholesterol esterase, was investigated with a turbidimetric approach by measuring the optical density reductions in aqueous emulsions containing dissolved, filtered, surfactant-stabilized polymeric components of Resilon. Polycaprolactone, the major polymeric component of Resilon, was also examined in a similar manner using equivalent or a four-fold increase in enzyme concentration. Optical density time plots were characterized by an initially linear steep reduction in optical density, from which the reaction rates were derived. For both enzymes, the rates of hydrolysis for Resilon were much faster than those of polycaprolactone at 1x or even 4x enzyme concentration. Field-emission scanning electron microscopy of air-dried Resilon and polycaprolactone emulsions revealed the presence of spherical polymer droplets that appeared deformed, pitted, or much reduced in dimensions after enzymatic hydrolysis.-
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.meshEmulsions - chemistry-
dc.subject.meshLipase - chemistry-
dc.subject.meshMicroscopy, Electron, Scanning - methods-
dc.subject.meshRoot Canal Filling Materials - chemistry-
dc.titleSusceptibility of a polycaprolactone-based root canal filling material to degradation. III. Turbdimetric evaluation of enzymatic hydrolysisen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0099-2399&volume=33&issue=8&spage=952&epage=956&date=2007&atitle=Susceptibility+of+a+polycaprolactone-based+root+canal+filling+material+to+degradation:+III.+Turbdimetric+evaluation+of+enzymatic+hydrolysis.en_HK
dc.identifier.emailHiraishi, N: hiraishinoriko@yahoo.comen_HK
dc.identifier.emailKing, NM: profnigelking@mac.comen_HK
dc.identifier.emailTay, FR: franktay@hkucc.hku.hken_HK
dc.identifier.authorityKing, NM=rp00006en_HK
dc.identifier.doi10.1016/j.joen.2007.05.004-
dc.identifier.pmid17878081-
dc.identifier.hkuros147070en_HK
dc.identifier.volume33-
dc.identifier.issue8-
dc.identifier.spage952-
dc.identifier.epage956-
dc.identifier.isiWOS:000248490500010-
dc.publisher.placeUnited States-

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