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Conference Paper: Chemical, morphological and microhardness dentinal changes after chemomechanical caries removal

TitleChemical, morphological and microhardness dentinal changes after chemomechanical caries removal
Authors
KeywordsCaries
Chemomechanical
EDX
Dentin
Issue Date2011
PublisherSage Publications, Inc.. The Journal's web site is located at http://www.sagepub.com/journalsProdDesc.nav?prodId=Journal201925
Citation
The 25th Annual Scientific Meeting of the IADR-SEA Division and the 22nd Annual Meeting of SEAADE, Singapore, 28-30 October 2011. In Journal of Dental Research, 2011, v. 90 Spe. Iss. B, abstract no. 112 How to Cite?
AbstractOBJECTIVES: This study compared the chemical, morphological and microhardness changes in carious dentin following application of NaOCl-based (Carisolv), papain-based (Papacarie) chemomechanical caries removal agents with rotary method. Material and METHODS: Twenty carious and 5 non-carious human permanent molars were used in the study. The 20 carious molars were randomly distributed into four groups (n=5), depending on the caries removal method. Group 1 (positive control): molars were left without caries removal, Group 2: caries excavated with rotary method, Group 3: caries excavated with Carisolv, and Group 4: caries excavated with Papacarie. Group 5 (negative control) consisted of 5 sound molars. After caries excavation, all specimens were longitudinally sectioned into two halves mesio-distally; one-half was used for chemical (EDX) and morphological analysis; while the remaining half was used for microhardness testing. RESULTS: The EDX analysis showed no significant difference in Ca wt%, P wt% and Ca/P ratio among Groups 2 to 5. The microhardness test showed that the Vickers hardness of dentin from Groups 3 and 4 was significantly lower (p<0.05) than for Groups 2 and 5. The morphological evaluation revealed that the use of Papacarie resulted in a dentin surface without a smear layer and patent tubules, while the usage of Carisolv resulted in a dentin surface exhibiting two patterns; the first showed the presence of a smear layer, while the other pattern showed partial smear layer formation. CONCLUSION: The results showed that papain-based chemomechanical caries removal method is a reliable alternative to rotary and NaOCl-based excavation of carious tissue.
DescriptionOral Communication Session 3 - abstract no. 112
Persistent Identifierhttp://hdl.handle.net/10722/146937
ISSN
2015 Impact Factor: 4.602
2015 SCImago Journal Rankings: 1.714

 

DC FieldValueLanguage
dc.contributor.authorHamama, HHHEen_US
dc.contributor.authorYiu, CKYen_US
dc.contributor.authorBurrow, MFen_US
dc.contributor.authorKing, NMen_US
dc.date.accessioned2012-05-23T05:50:55Z-
dc.date.available2012-05-23T05:50:55Z-
dc.date.issued2011en_US
dc.identifier.citationThe 25th Annual Scientific Meeting of the IADR-SEA Division and the 22nd Annual Meeting of SEAADE, Singapore, 28-30 October 2011. In Journal of Dental Research, 2011, v. 90 Spe. Iss. B, abstract no. 112en_US
dc.identifier.issn0022-0345-
dc.identifier.urihttp://hdl.handle.net/10722/146937-
dc.descriptionOral Communication Session 3 - abstract no. 112-
dc.description.abstractOBJECTIVES: This study compared the chemical, morphological and microhardness changes in carious dentin following application of NaOCl-based (Carisolv), papain-based (Papacarie) chemomechanical caries removal agents with rotary method. Material and METHODS: Twenty carious and 5 non-carious human permanent molars were used in the study. The 20 carious molars were randomly distributed into four groups (n=5), depending on the caries removal method. Group 1 (positive control): molars were left without caries removal, Group 2: caries excavated with rotary method, Group 3: caries excavated with Carisolv, and Group 4: caries excavated with Papacarie. Group 5 (negative control) consisted of 5 sound molars. After caries excavation, all specimens were longitudinally sectioned into two halves mesio-distally; one-half was used for chemical (EDX) and morphological analysis; while the remaining half was used for microhardness testing. RESULTS: The EDX analysis showed no significant difference in Ca wt%, P wt% and Ca/P ratio among Groups 2 to 5. The microhardness test showed that the Vickers hardness of dentin from Groups 3 and 4 was significantly lower (p<0.05) than for Groups 2 and 5. The morphological evaluation revealed that the use of Papacarie resulted in a dentin surface without a smear layer and patent tubules, while the usage of Carisolv resulted in a dentin surface exhibiting two patterns; the first showed the presence of a smear layer, while the other pattern showed partial smear layer formation. CONCLUSION: The results showed that papain-based chemomechanical caries removal method is a reliable alternative to rotary and NaOCl-based excavation of carious tissue.-
dc.languageengen_US
dc.publisherSage Publications, Inc.. The Journal's web site is located at http://www.sagepub.com/journalsProdDesc.nav?prodId=Journal201925-
dc.relation.ispartofJournal of Dental Researchen_US
dc.rightsJournal of Dental Research. Copyright © Sage Publications, Inc..-
dc.subjectCaries-
dc.subjectChemomechanical-
dc.subjectEDX-
dc.subjectDentin-
dc.titleChemical, morphological and microhardness dentinal changes after chemomechanical caries removalen_US
dc.typeConference_Paperen_US
dc.identifier.emailHamama, HHHE: hamdy@hku.hken_US
dc.identifier.emailYiu, CKY: ckyyiu@hkucc.hku.hken_US
dc.identifier.emailBurrow, MF: mfburr58@hku.hken_US
dc.identifier.emailKing, NM: hhdbknm@hkucc.hku.hk-
dc.identifier.authorityYiu, CKY=rp00018en_US
dc.identifier.authorityBurrow, MF=rp01306en_US
dc.identifier.authorityKing, NM=rp00006en_US
dc.description.naturelink_to_OA_fulltext-
dc.identifier.hkuros199525en_US
dc.identifier.volume90en_US
dc.identifier.issueSpe. Iss. Ben_US
dc.publisher.placeUnited States-
dc.description.otherThe 25th Annual Scientific Meeting of the IADR-SEA Division and the 22nd Annual Meeting of SEAADE, Singapore, 28-30 October 2011. In Journal of Dental Research, 2011, v. 90 Spe. Iss. B, abstract no. 112-

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