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Article: Cleaning effectiveness and shaping ability of rotary ProTaper compared with rotary GT and manual K-Flexofile

TitleCleaning effectiveness and shaping ability of rotary ProTaper compared with rotary GT and manual K-Flexofile
Authors
Issue Date2006
PublisherMosher & Linder, Inc. The Journal's web site is located at http://www.amjdent.com
Citation
American Journal Of Dentistry, 2006, v. 19 n. 6, p. 353-358 How to Cite?
AbstractPurpose: To compare the cleaning efficacy and shaping ability of engine-driven ProTaper and GT files, and manual preparation using K-Flexofile instruments in curved root canals of extracted human teeth. Methods: 45 canals of maxillary and mandibular molars with curvatures between 25°and 40° were divided into three groups. The groups were balanced with regard to the angle and the radius of canal curvature. Canals in each group were prepared to an apical size of 25 with either the rotary ProTaper or GT system, or manually with K-Flexofile using the modified double-flared technique. Irrigation was done with 2 mL 2.5% NaOCl after each instrument and, as the final rinse, 10 mL 2.5% NaOCl then 10 mL 17% EDTA and finally 5 mL distilled water. The double-exposure radiographic technique was used to examine for the presence of apical transportation. The time required to complete the preparation, as well as any change in working length after preparation were recorded. The roots were then grooved and split longitudinally. The amounts of debris and smear layer were evaluated at the apical, middle and coronal regions under the scanning electron microscope. Data were analyzed either parametrically with the F-test or non-parametrically using the Kruskal-Wallis test, where appropriate. Results: Two GT files but none of the K-Flexofile and ProTaper instruments separated. For debris removal, the ProTaper group achieved a better result than GT (P< 0.05) but not the K-Flexofile group at all three regions (apical, middle and coronal). K-Flexofiles produced significantly less smear layer than ProTaper and GT files only in the middle third of the canal (P< 0.01). Both NiTi rotary instruments maintained the original canal shape better than the K-Flexofiles (P< 0.05) and required significantly less time to complete the preparation.
Persistent Identifierhttp://hdl.handle.net/10722/66582
ISSN
2015 Impact Factor: 1.194
2015 SCImago Journal Rankings: 0.443
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLiu, SBen_HK
dc.contributor.authorFan, Ben_HK
dc.contributor.authorCheung, GSPen_HK
dc.contributor.authorPeng, Ben_HK
dc.contributor.authorFan, MWen_HK
dc.contributor.authorGutmann, JLen_HK
dc.contributor.authorSong, YLen_HK
dc.contributor.authorFu, Qen_HK
dc.contributor.authorBian, Zen_HK
dc.date.accessioned2010-09-06T05:47:35Z-
dc.date.available2010-09-06T05:47:35Z-
dc.date.issued2006en_HK
dc.identifier.citationAmerican Journal Of Dentistry, 2006, v. 19 n. 6, p. 353-358en_HK
dc.identifier.issn0894-8275en_HK
dc.identifier.urihttp://hdl.handle.net/10722/66582-
dc.description.abstractPurpose: To compare the cleaning efficacy and shaping ability of engine-driven ProTaper and GT files, and manual preparation using K-Flexofile instruments in curved root canals of extracted human teeth. Methods: 45 canals of maxillary and mandibular molars with curvatures between 25°and 40° were divided into three groups. The groups were balanced with regard to the angle and the radius of canal curvature. Canals in each group were prepared to an apical size of 25 with either the rotary ProTaper or GT system, or manually with K-Flexofile using the modified double-flared technique. Irrigation was done with 2 mL 2.5% NaOCl after each instrument and, as the final rinse, 10 mL 2.5% NaOCl then 10 mL 17% EDTA and finally 5 mL distilled water. The double-exposure radiographic technique was used to examine for the presence of apical transportation. The time required to complete the preparation, as well as any change in working length after preparation were recorded. The roots were then grooved and split longitudinally. The amounts of debris and smear layer were evaluated at the apical, middle and coronal regions under the scanning electron microscope. Data were analyzed either parametrically with the F-test or non-parametrically using the Kruskal-Wallis test, where appropriate. Results: Two GT files but none of the K-Flexofile and ProTaper instruments separated. For debris removal, the ProTaper group achieved a better result than GT (P< 0.05) but not the K-Flexofile group at all three regions (apical, middle and coronal). K-Flexofiles produced significantly less smear layer than ProTaper and GT files only in the middle third of the canal (P< 0.01). Both NiTi rotary instruments maintained the original canal shape better than the K-Flexofiles (P< 0.05) and required significantly less time to complete the preparation.en_HK
dc.languageengen_HK
dc.publisherMosher & Linder, Inc. The Journal's web site is located at http://www.amjdent.comen_HK
dc.relation.ispartofAmerican Journal of Dentistryen_HK
dc.subject.meshDental Alloysen_HK
dc.subject.meshDental Instrumentsen_HK
dc.subject.meshDental Pulp Cavity - anatomy & histology - radiographyen_HK
dc.subject.meshHumansen_HK
dc.subject.meshMolaren_HK
dc.subject.meshNickelen_HK
dc.subject.meshRoot Canal Preparation - instrumentationen_HK
dc.subject.meshSmear Layeren_HK
dc.subject.meshStainless Steelen_HK
dc.subject.meshTitaniumen_HK
dc.titleCleaning effectiveness and shaping ability of rotary ProTaper compared with rotary GT and manual K-Flexofileen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0894-8275&volume=19&spage=353&epage=358&date=2006&atitle=Cleaning+effectiveness+and+shaping+ability+of+rotary+ProTaper+compared+with+rotary+GT+and+manual+K-Flexofileen_HK
dc.identifier.emailCheung, GSP:spcheung@hkucc.hku.hken_HK
dc.identifier.authorityCheung, GSP=rp00016en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid17212077-
dc.identifier.scopuseid_2-s2.0-33846179300en_HK
dc.identifier.hkuros131031en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33846179300&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume19en_HK
dc.identifier.issue6en_HK
dc.identifier.spage353en_HK
dc.identifier.epage358en_HK
dc.identifier.isiWOS:000242681900007-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLiu, SB=14622037000en_HK
dc.identifier.scopusauthoridFan, B=35073871100en_HK
dc.identifier.scopusauthoridCheung, GSP=7005809531en_HK
dc.identifier.scopusauthoridPeng, B=36830576300en_HK
dc.identifier.scopusauthoridFan, MW=7201970773en_HK
dc.identifier.scopusauthoridGutmann, JL=7103288888en_HK
dc.identifier.scopusauthoridSong, YL=12806612300en_HK
dc.identifier.scopusauthoridFu, Q=36046915000en_HK
dc.identifier.scopusauthoridBian, Z=7103314705en_HK

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