Torsional fatigue resistance of R-Pilot and WaveOne Gold Glider NiTi glide path reciprocating systems.

Abstract:

AIM:To evaluate the torsional properties of the NiTi glide path reciprocating instruments R-Pilot (VDW, Munich, Germany) and WaveOne Gold Glider (Dentsply Sirona, Ballaigues, Switzerland). METHODOLOGY:Ten R-Pilot (size 12.5, .04 taper) and 10 WaveOne Gold Glider (size 15, .02v taper) instruments were used. The torque and angle of rotation at failure of new instruments (n = 10) were measured according to ISO 3630-1. Three millimetres of each instrument tip was clamped to a small load cell by a lever arm linked to the torsion axis. The fracture surface of all fragments was examined with a scanning electron microscope. Data were analysed using the Student t-test at a significance level of P < 0.05. RESULTS:The maximum torsional strength of the R-Pilot instruments was greater than the WaveOne Gold Glider (P < 0.05). In contrast, WaveOne Gold Glider instruments had significantly higher angular rotation to fracture than R-Pilot instruments (P < 0.05). The scanning electron microscopy of the fracture surfaces revealed similar and typical features of torsional failure (ductile type) for both brands. The torsional failure displayed two zones: the first with microvoids in the centre of the instruments (core) and the second one represented by plastic deformation around the microvoids; this configuration occurred because of the shear stresses originated during the twisting. CONCLUSIONS:R-Pilot instruments had a lower angle of rotation to fracture but a higher torque to failure than WaveOne Gold Glider instruments.

journal_name

Int Endod J

authors

Santos CB,Simões-Carvalho M,Perez R,Vieira VTL,Antunes HS,Cavalcante DF,De-Deus G,Silva EJNL

doi

10.1111/iej.13068

subject

Has Abstract

pub_date

2019-06-01 00:00:00

pages

874-879

issue

6

eissn

0143-2885

issn

1365-2591

journal_volume

52

pub_type

杂志文章
  • Laboratory comparison of the mechanical properties of TRUShape with several nickel-titanium rotary instruments.

    abstract:AIM:To assess and compare the mechanical properties of TRUShape (TRS) with several nickel-titanium rotary instruments. METHODOLOGY:Cyclic fatigue, torsional resistance, flexibility and surface microhardness of TRS (size 25, 0.06v taper), ProTaper Next X2 (PTN X2, size 25, 0.06 taper), ProTaper Gold (PTG F2; size 25, 0...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12700

    authors: Elnaghy AM,Elsaka SE

    更新日期:2017-08-01 00:00:00

  • Relationship between unintentional canal overfilling and the long-term outcome of primary root canal treatments and nonsurgical retreatments: a retrospective radiographic assessment.

    abstract:AIM:To determine retrospectively the long-term radiographic outcome of root canal treatments and root canal retreatments with unintentional root canal overfilling. METHODOLOGY:A total of 220 root canal treatments (143 primary/77 retreatments) with postoperative unintentional canal overfilling and performed by two endo...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.13209

    authors: Goldberg F,Cantarini C,Alfie D,Macchi RL,Arias A

    更新日期:2020-01-01 00:00:00

  • Effectiveness in cleaning oval-shaped root canals using Anatomic Endodontic Technology, ProFile and manual instrumentation: a scanning electron microscopic study.

    abstract:AIM:To compare in vitro the cleanliness of root canal walls in oval-shaped root canals following automated or manual instrumentation. METHODOLOGY:Forty-five oval-shaped single-rooted maxillary and mandibular premolars with straight canals were divided into three groups of 15. Automated canal preparation was performed ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2005.00938.x

    authors: Zmener O,Pameijer CH,Banegas G

    更新日期:2005-06-01 00:00:00

  • Influence of oval and circular post placement using different resin cements on push-out bond strength and void volume analysed by micro-CT.

    abstract:AIM:To evaluate the percentage volume of voids within cement layers, to determine the push-out bond strength of circular and oval fibre posts luted with different commercial resin cements in oval cross-sectional root canals, and to correlate push-out bond strength values and volume of voids of circular and oval fibre p...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12568

    authors: Uzun I,Keleş A,Arslan H,Güler B,Keskin C,Gündüz K

    更新日期:2016-12-01 00:00:00

  • Prodromal herpes zoster--a diagnostic challenge in endodontics.

    abstract::This case report highlights the diagnostic challenge that herpes zoster represents if pain develops in the prodromal stage. A 58-year-old male presented with pain in the left maxilla. The symptoms had lasted for 7 months. The first premolar had been extracted soon after the onset, and the second premolar root filled s...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1046/j.1365-2591.2002.00605.x

    authors: Fristad I,Bårdsen A,Knudsen GC,Molven O

    更新日期:2002-12-01 00:00:00

  • The effect of medicaments used in endodontic regeneration on root fracture and microhardness of radicular dentine.

    abstract:AIM:To investigate the effect of medicaments used in endodontic regeneration on root fracture resistance and microhardness of radicular dentine. METHODOLOGY:The root canals of mandibular premolars (n = 180) were instrumented and randomized into three treatment groups and an untreated control group. Each treatment grou...

    journal_title:International endodontic journal

    pub_type: 杂志文章,随机对照试验

    doi:10.1111/iej.12046

    authors: Yassen GH,Vail MM,Chu TG,Platt JA

    更新日期:2013-07-01 00:00:00

  • Co-production of vascular endothelial cadherin and inducible nitric oxide synthase by endothelial cells in periapical granuloma.

    abstract:AIM:To clarify the mechanisms of inflammatory cell migration in human periapical granulomas by examining vascular endothelial (VE) cadherin and inducible nitric oxide synthase (iNOS)-producing cells. METHODOLOGY:Periapical tissues were obtained from patients during endodontic surgery and were divided into two portions...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2006.01068.x

    authors: Hama S,Takeichi O,Hayashi M,Komiyama K,Ito K

    更新日期:2006-03-01 00:00:00

  • A systematic review of in vivo retrograde obturation materials.

    abstract:PURPOSE:The aim of this study was to answer the question: For patients requiring apicoectomy (apicectomy/root-end resection) and retrograde (root-end) obturation (filling), which retrograde obturation (root-end filling) material(s) is/are the most effective, as determined by reduction in periapical radiolucency and eli...

    journal_title:International endodontic journal

    pub_type: 杂志文章,meta分析,评审

    doi:10.1046/j.1365-2591.2003.00696.x

    authors: Niederman R,Theodosopoulou JN

    更新日期:2003-09-01 00:00:00

  • Resolution of persistent periapical infection by endodontic surgery.

    abstract:AIM:To examine the surfaces of a root tip removed during surgical endodontic treatment for the presence of microorganisms. SUMMARY:The present clinical case illustrates an endodontic retreatment of a maxillary premolar tooth with a fistula and periapical reaction. The case was under treatment for 1 year, during which ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2004.00753.x

    authors: Ferreira FB,Ferreira AL,Gomes BP,Souza-Filho FJ

    更新日期:2004-01-01 00:00:00

  • Cone beam computed tomography in Endodontics - a review of the literature.

    abstract::The use of cone beam computed tomography (CBCT) in the diagnosis and/or management of endodontic problems is increasing and is reflected in the exponential rise in publications on this topic in the last two decades. The aim of this paper is to: (i) Review current literature on the endodontic applications of CBCT; (ii)...

    journal_title:International endodontic journal

    pub_type: 杂志文章,评审

    doi:10.1111/iej.13115

    authors: Patel S,Brown J,Pimentel T,Kelly RD,Abella F,Durack C

    更新日期:2019-08-01 00:00:00

  • Toll-like receptor 2 expression in refractory periapical lesions.

    abstract:AIM:To investigate the expression of TLR2 in refractory periapical lesions. METHODOLOGY:Refractory periapical lesion biopsies were histopathologically and clinically categorized into asymptomatic periapical granuloma (n=10), symptomatic periapical granuloma (n=10) or periapical cyst (n=10) and prepared for immunohisto...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2011.01893.x

    authors: Desai SV,Love RM,Rich AM,Seymour GJ

    更新日期:2011-10-01 00:00:00

  • Chemical biofilm removal capacity of endodontic irrigants as a function of biofilm structure: optical coherence tomography, confocal microscopy and viscoelasticity determination as integrated assessment tools.

    abstract:AIM:To investigate the influence of biofilm structure on the biofilm removal capacity of endodontic irrigants and to study changes in the architecture of the remaining biofilms. METHODOLOGY:Streptococcus oralis J22 and Actinomyces naeslundii T14V-J1 were cocultured under different growth conditions on saliva-coated hy...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.13027

    authors: Busanello FH,Petridis X,So MVR,Dijkstra RJB,Sharma PK,van der Sluis LWM

    更新日期:2019-04-01 00:00:00

  • Oscillatory pattern of sonically powered endodontic files.

    abstract::When operated in air, the sonic endodontic instrument produced a movement at the driver head which resulted in a large elliptical oscillation of the file. This motion had similar properties to ultrasonically operated files in that there was a distinct variability in the magnitude of the vibratory motion between files ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.1989.tb00910.x

    authors: Walmsley AD,Lumley PJ,Laird WR

    更新日期:1989-05-01 00:00:00

  • Concentration-dependent effect of bleaching agents on the immunolabelling of interleukin-6, interleukin-17 and CD5-positive cells in the dental pulp.

    abstract:AIM:To evaluate lymphocyte-like cell activation (CD5-positive cells) and the expression of interleukin (IL)-6 and IL-17 in the pulp after tooth bleaching with two concentrations of hydrogen peroxide (H2 O2 ). METHODOLOGY:The right and left maxillary molars from 40 rats were treated randomly with bleaching gel with 20%...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12891

    authors: Benetti F,Gomes-Filho JE,Ferreira LL,Sivieri-Araújo G,Ervolino E,Briso ALF,Cintra LTA

    更新日期:2018-07-01 00:00:00

  • The effect of TRPM7 suppression on the proliferation, migration and osteogenic differentiation of human dental pulp stem cells.

    abstract:AIM:To investigate the role of the Ca(2+) -Mg(2+) ion channel TRPM7 in the proliferation, migration and osteogenic differentiation of human dental pulp stem cells (hDPSCs). METHODOLOGY:Immunohistochemistry was used to localize expression of TRPM7 in human dental pulp tissues and in cultured hDPSCs. Isolated hDPSCs wer...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12193

    authors: Cui L,Xu SM,Ma DD,Wu BL

    更新日期:2014-06-01 00:00:00

  • Clinical influence of calcium hydroxide and N-acetylcysteine on the levels of resolvins E1 and D2 in apical periodontitis.

    abstract:AIM:To investigate the presence of resolvins E1 (RvE1) and D2 (RvD2) in teeth with primary endodontic infections and apical periodontitis, and to assess the influence of calcium hydroxide medication [Ca(OH)2 ], in association with 2% chlorhexidine gel (2% CHX gel), and N-acetylcysteine (NAC) on the levels of RvE1 and R...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.13403

    authors: Corazza BJM,Martinho FC,Khoury RD,Toia CC,Orozco EIF,Prado RF,Machado FP,Valera MC

    更新日期:2021-01-01 00:00:00

  • Histological healing following surgical endodontics and its implications in case assessment: a case report.

    abstract::Following extraction of a symptomatic mandibular premolar which had been subjected to two periradicular surgical procedures, significant apical healing was identified histologically. The implications of these findings are discussed in relation to contemporary advocated treatment regimens, case assessment, and interpre...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.1994.tb00280.x

    authors: Meyers JP,Gutmann JL

    更新日期:1994-11-01 00:00:00

  • Do pre-existing microcracks play a role in the fracture resistance of roots in a laboratory setting?

    abstract:AIM:To investigate a potential cause-effect relationship between dentinal microcracks and fracture resistance of mandibular incisors that had not been endodontically treated. METHODOLOGY:Sixty mandibular incisors with circular-shaped canals were selected based on micro-computed tomographic scans to create a homogeneou...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.13370

    authors: Cavalcante DM,Belladonna FG,Simões-Carvalho M,Carvalhal JCA,Souza EM,Lopes RT,Silva EJNL,Dummer PMH,De-Deus G

    更新日期:2020-11-01 00:00:00

  • Bacterial localization and viability assessment in human ex vivo dentinal tubules by fluorescence confocal laser scanning microscopy.

    abstract:AIM:To develop a convenient method for the localization and quantification of live and dead bacteria in human ex vivo mineralized dentinal tubules. METHODOLOGY:The roots from human single-rooted teeth (n = 12) were infected with Enterococcus faecalis V583 and either treated with calcium hydroxide paste or left untreat...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2011.01867.x

    authors: Parmar D,Hauman CH,Leichter JW,McNaughton A,Tompkins GR

    更新日期:2011-07-01 00:00:00

  • Subcutaneous connective tissue reactions to iRoot SP, mineral trioxide aggregate (MTA) Fillapex, DiaRoot BioAggregate and MTA.

    abstract:AIM:To evaluate connective tissue reactions to iRoot SP (Innovative Bioceramics, Vancouver, BC, Canada), mineral trioxide aggregate (MTA) Fillapex (FLPX) (Angelus Soluções Odontológicas, Londrina, Brazil), DiaRoot Bioaggregate (DiaDent Group International, Burnaby, BC, Canada) and white MTA (Angelus, Londrina, Brazil) ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12203

    authors: Bósio CC,Felippe GS,Bortoluzzi EA,Felippe MC,Felippe WT,Rivero ER

    更新日期:2014-07-01 00:00:00

  • A training model for revitalization procedures.

    abstract:AIM:To develop an inexpensive simulation model for training of revitalization procedures. METHODOLOGY:A replica of an immature maxillary central incisor was equipped with a mock blood reservoir at the root apex and embedded in a plaster model. Mock blood consisted of water supplemented with red pigments and fibrinogen...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12765

    authors: Widbiller M,Ducke S,Eidt A,Buchalla W,Galler KM

    更新日期:2018-05-01 00:00:00

  • Morphometric study of the apical anatomy of C-shaped root canal systems in mandibular second molars.

    abstract:AIM:To investigate the apical anatomy of C-shaped canal systems in mandibular second molars by micro-computerized tomography (microCT) and stereomicroscopy. METHODOLOGY:Forty-four permanent mandibular second molars with a C-shaped root canal systems from a native Chinese population were scanned at 100 microm intervals...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2007.01193.x

    authors: Cheung GS,Yang J,Fan B

    更新日期:2007-04-01 00:00:00

  • Short-term tissue response to potential root-end filling materials in infected root canals.

    abstract::The short-term tissue responses to two potential root-end filling materials, a light-cured glass ionomer cement (Vitrebond) and a reinforced zinc oxide-eugenol cement (Kalzinol), were compared with that to amalgam using a previously devised experimental model. In 24 premolar teeth of beagle dogs (47 roots), a collecti...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1046/j.1365-2591.1997.00077.x

    authors: Chong BS,Pitt Ford TR,Kariyawasam SP

    更新日期:1997-07-01 00:00:00

  • The Tennessee study: factors affecting treatment outcome and healing time following nonsurgical root canal treatment.

    abstract:AIM:To determine factors that may influence treatment outcome and healing time following root canal treatment. METHODOLOGY:Root filled and restored teeth by pre-doctoral students were included in this study. Teeth/roots were followed-up regularly, and treatment outcome was evaluated at every follow-up appointment (hea...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12429

    authors: Azim AA,Griggs JA,Huang GT

    更新日期:2016-01-01 00:00:00

  • Push-out bond strength of root fillings made with C-Point and BC sealer versus gutta-percha and AH Plus after the instrumentation of oval canals with the Self-Adjusting File versus WaveOne.

    abstract:AIM:To compare the push-out bond strength exhibited by root fillings performed with either C-Point and Endosequence® BC sealer™ (BC Sealer) or gutta-percha and AH Plus® after the instrumentation of oval canals with either the Self-Adjusting File (SAF) System or WaveOne (WO) reciprocating file. METHODOLOGY:Eighty extra...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12455

    authors: Pawar AM,Pawar S,Kfir A,Pawar M,Kokate S

    更新日期:2016-04-01 00:00:00

  • Correlation between the clinically diagnosed inflammatory process and periapical index scores in severely painful endodontically involved teeth.

    abstract:AIM:To assess and correlate three distinct states of severely painful endodontically derived inflammation with their depiction on periapical radiographs using periapical index (PAI) scores. METHODOLOGY:During a period of 15 months, 368 consecutively enrolled patients with suspected endodontic emergency conditions were...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.13407

    authors: Rechenberg DK,Munir A,Zehnder M

    更新日期:2021-02-01 00:00:00

  • Immortalization and characterization of human dental papilla cells with odontoblastic differentiation.

    abstract:AIM:To establish a cell line of immortalized human dental papilla cells (hDPCs). METHODOLOGY:Primary hDPCs were cultured and infected with lentivirus containing the hTERT gene. Integration and transcription of the hTERT gene were verified by PCR. The characteristics of the cells, such as morphology, proliferation and ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12029

    authors: Yang GB,Li XY,Yuan GH,Liu H,Fan MW

    更新日期:2013-06-01 00:00:00

  • A prospective clinical study of Mineral Trioxide Aggregate and IRM when used as root-end filling materials in endodontic surgery.

    abstract:AIM:To assess the success rate of the root-end filling material, Mineral Trioxide Aggregate (MTA). METHODOLOGY:Referred adult patients were recruited using strict entry criteria and randomly allocated to receive MTA or IRM. A standardized surgical technique was employed: the root end was resected perpendicularly and a...

    journal_title:International endodontic journal

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1046/j.1365-2591.2003.00682.x

    authors: Chong BS,Pitt Ford TR,Hudson MB

    更新日期:2003-08-01 00:00:00

  • Second-generation platelet concentrate (PRF) as a pulpotomy medicament in a permanent molar with pulpitis: a case report.

    abstract:AIM:  To discuss the clinical and radiographic success of a pulpotomy with second-generation platelet concentrate (PRF), in a human mature permanent molar tooth. SUMMARY:  A 19-year-old female patient reported to the Department of Conservative Dentistry and Endodontics with established pulpitis in tooth 36. The tooth ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2011.01973.x

    authors: Hiremath H,Saikalyan S,Kulkarni SS,Hiremath V

    更新日期:2012-01-01 00:00:00

  • Accuracy of root canal length determination with the impedance ratio method.

    abstract:AIM:To provide insight into the principles of operation of electronic apex locators, determine optimal measuring parameters of the impedance ratio method, and to evaluate its accuracy. METHODOLOGY:Electrical impedance was measured ex vivo on 14 extracted human teeth using a QuadTech 1920 precision impedance analyzer. ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2009.01589.x

    authors: Jan J,Krizaj D

    更新日期:2009-09-01 00:00:00