Smear layer production of K3 and ProFile Ni-Ti rotary instruments in curved root canals: a comparative SEM study.
ObjectiveThe aim of this scanning electron microscopic study was to compare the quality and amounts of smear layer generated by 2 brands of nickel-titanium rotary instruments during canal preparation in the apical thirds of curved root canals.Study designForty mandibular mesial root canals with inta...
| Publicado en: | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology Vol. 101; no. 4; pp. 536 - 542 |
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| Autores principales: | , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Elsevier B.V.
Apr2006
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106316763&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106316763 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10792104 1VC jtl: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology issn: 10792104 maglogo: N pubinfo: dt: Apr2006 vid: 101 iid: 4 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 106316763 2009241302 10.1016/j.tripleo.2005.02.079 NLM16545720 106316763 ppf: 536 ppct: 6 formats: tig: atl: Smear layer production of K3 and ProFile Ni-Ti rotary instruments in curved root canals: a comparative SEM study. aug: au: Kum K Kazemi RB Cha BY Zhu Q affil: Associate Professor, Department of Endodontics, College of Dentistry, Yonsei University sug: subj: Dental Instruments Dental Pulp Cavity Anatomy and Histology Root Canal Therapy Equipment and Supplies Comparative Studies Dental Alloys Dentin Anatomy and Histology Descriptive Statistics Equipment Design Microscopy, Electron Molar Nickel Titanium Human ab: ObjectiveThe aim of this scanning electron microscopic study was to compare the quality and amounts of smear layer generated by 2 brands of nickel-titanium rotary instruments during canal preparation in the apical thirds of curved root canals.Study designForty mandibular mesial root canals with intact apex and mean curvature between 30 and 35 degrees were selected for this study. The root canals were randomly divided into 2 instrumentation groups of 15 each. Automated preparation was performed with ProFile (Dentsply Maillefer, Ballaigues, Switzerland; n = 15) and K3 (SybronEndo, Orange, Calif; n = 15) instrumentss using a crown-down technique. As a control group, barbed broaches (Mani; Matsutani Seisakusho, Takanezawa-Machi Tochibi-Ken, Japan; n = 10) were used to extirpate the necrotic pulp tissue from the root canals. All root canals were prepared to size #35. Glyde (File Prep, Dentsply Maillefer) was used as lubricant and 1% sodium hypochlorite solution as irrigant. At the conclusion of the experiments, all roots were split longitudinally and the root canal walls were examined at the apical third from 2 different perspectives using a scanning electron microscope. A 4-category scoring system for assessing the smear layer accumulation was used, and the resulting scores were statistically analyzed.ResultsLess smear layer was obtained in the K3 group at the selected apical third of curved root canals (P < .05). However, all instruments left a smear layer. The surface texture of the smear layer, in addition to the depth and the frequency of packed materials into the dentinal tubules, varied with instrument type.ConclusionsThis finding may imply that, compared to ProFile, compression of the remaining smear layer is minimized when using the K3 rotary nickel-titanium system. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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