The effects of canal preparation and filling on the incidence of dentinal defects.

Abstract:

AIM:To evaluate ex vivo the incidence of defects in root dentine before and after root canal preparation and filling. METHODOLOGY:Eighty extracted mandibular premolars were divided equally in four groups. Group 1 was left unprepared. All other root canals were prepared using Gates Glidden drills and System GT files up to size-40, 0.06 taper at the working length. Group 2 was not filled while the canals of the other groups were filled with gutta-percha and AH26, either with a master cone and passive insertion of secondary gutta percha points (group 3) or lateral compaction (group 4). Roots were then sectioned horizontally 3, 6, and 9 mm from the apex and observed under a microscope. The presence of dentinal defects (fractures, craze lines or incomplete cracks) was noted and the differences between the groups were analysed with the Fisher's exact test. RESULTS:No defects were observed in the roots with unprepared canals. The overall difference between the groups was significant (P < 0.05). Canal preparation alone created significantly more defects than unprepared canals (P < 0.05). The total number of defects after lateral compaction was significantly larger than after noncompaction canal filling. CONCLUSION:Root canal preparation and filling of extracted teeth created dentine defects such as fractures, craze lines and incomplete cracks.

journal_name

Int Endod J

authors

Shemesh H,Bier CA,Wu MK,Tanomaru-Filho M,Wesselink PR

doi

10.1111/j.1365-2591.2008.01502.x

subject

Has Abstract

pub_date

2009-03-01 00:00:00

pages

208-13

issue

3

eissn

0143-2885

issn

1365-2591

pii

IEJ1502

journal_volume

42

pub_type

杂志文章
  • Effect of bleaching agents on bonding to pulp chamber dentine.

    abstract:AIM:To determine the effect of intracoronal bleaching agents on adhesion of bonding agents to pulp chamber dentine. METHODOLOGY:Forty extracted human maxillary anterior teeth were randomly divided into four groups of 10 teeth each. Bleaching agents were sealed in pulp chambers for 7 days, as in clinical use. Group 1 (...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2004.00931.x

    authors: Timpawat S,Nipattamanon C,Kijsamanmith K,Messer HH

    更新日期:2005-04-01 00:00:00

  • Bovine teeth can reliably substitute human dentine in an intra-tooth push-out bond strength model?

    abstract:AIM:To investigate the reliability of using bovine teeth as an alternative to human teeth in an intra-tooth push-out model by comparing the bond strength of three root canal sealers in both tooth substrates. METHODOLOGY:From human and bovine incisors (12 per group), one 1-mm disc was obtained from each root. On each d...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.13085

    authors: Silva EJNL,Carvalho NK,Prado MC,Senna PM,Souza EM,De-Deus G

    更新日期:2019-07-01 00:00:00

  • Incidence and antimicrobial susceptibility of Porphyromonas gingivalis isolated from mixed endodontic infections.

    abstract:AIM:To investigate the prevalence of Porphyromonas gingivalis in root canals of infected teeth with periapical abscesses and to investigate the antimicrobial susceptibility of this species to some frequently prescribed antibiotics. METHODOLOGY:Samples were obtained from 70 root canals of abscessed teeth. Microbial sam...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2005.01053.x

    authors: Jacinto RC,Gomes BP,Shah HN,Ferraz CC,Zaia AA,Souza-Filho FJ

    更新日期:2006-01-01 00:00:00

  • Effect of preoperative oral administration of steroids in comparison to an anti-inflammatory drug on postoperative pain following single-visit root canal treatment - a double-blind, randomized clinical trial.

    abstract:AIM:This randomized, double-blinded, clinical trial evaluated the effect of oral premedication of piroxicam, prednisolone, dexamethasone or placebo on postoperative pain after single-visit root canal treatment in teeth with symptomatic irreversible pulpitis and symptomatic apical periodontitis. METHODOLOGY:The trial i...

    journal_title:International endodontic journal

    pub_type: 杂志文章,随机对照试验

    doi:10.1111/iej.13416

    authors: Suresh N,Nagendrababu V,Koteeswaran V,Haritha JS,Swetha SD,Varghese A,Natanasabapathy V

    更新日期:2021-02-01 00:00:00

  • Fluoride-containing nanoporous calcium-silicate MTA cements for endodontics and oral surgery: early fluorapatite formation in a phosphate-containing solution.

    abstract:AIM:To test the chemical-physical properties and apatite-forming ability of experimental fluoride-doped calcium silicate cements designed to create novel bioactive materials for use in endodontics and oral surgery. METHODOLOGY:A thermally treated calcium silicate cement (wTC) containing CaCl(2) 5%wt was modified by ad...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2011.01907.x

    authors: Gandolfi MG,Taddei P,Siboni F,Modena E,Ginebra MP,Prati C

    更新日期:2011-10-01 00:00:00

  • A proposal for using contralateral teeth to provide well-balanced experimental groups for endodontic studies.

    abstract:AIM:To develop a suitable protocol for screening extracted teeth so as to create anatomically well-balanced experimental groups for endodontic studies. METHODOLOGY:Sixty pairs (120 teeth) of contralateral premolars (CLPs) were collected. The evaluation of samples for anatomical features was performed in the following ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12553

    authors: Xu J,Shao MY,Pan HY,Lei L,Liu T,Cheng L,Hu T,Dummer PM

    更新日期:2016-10-01 00:00:00

  • Biocompatibility of dental materials used in contemporary endodontic therapy: a review. Part 1. Intracanal drugs and substances.

    abstract::Irrigation solutions and intracanal medicaments are used within the root canal to clean and aid in disinfecting the dentinal walls. Although these materials are intended to be contained within the root canal, they invariably contact the periapical tissues, either through inadvertent extrusion through the apex or leach...

    journal_title:International endodontic journal

    pub_type: 杂志文章,评审

    doi:10.1046/j.1365-2591.2003.00631.x

    authors: Hauman CH,Love RM

    更新日期:2003-02-01 00:00:00

  • Protective device to reduce aerosol dispersion in dental clinics during the COVID-19 pandemic.

    abstract:AIM:To describe the use of a new protective device to reduce aerosol dispersion in dental clinics during the COVID-19 pandemic. METHODOLOGY:The device consists of a rigid translucent acrylic structure (methyl polymethacrylate), adjusted to the dental chair, involving the patient's head, neck and chest. There is also a...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.13373

    authors: Teichert-Filho R,Baldasso CN,Campos MM,Gomes MS

    更新日期:2020-11-01 00:00:00

  • Temperature-dependent rheological property changes of thermoplastic gutta-percha root filling materials.

    abstract:AIM:To compare the penetration resistance (PR) of six thermoplastic gutta-percha (GP) materials against needle penetration at different temperatures. METHODOLOGY:The PR of the following materials based on warm gutta-percha techniques, Beefill GP Cartridge (Beefill), GP Obturator-Hard/Medium/Soft (Dia-H, Dia-M, Dia-S),...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12349

    authors: Moon HJ,Lee JH,Ahn JH,Song HJ,Park YJ

    更新日期:2015-06-01 00:00:00

  • Dental pulp regeneration via cell homing.

    abstract::The typical treatment for irreversibly inflamed/necrotic pulp tissue is root canal treatment. As an alternative approach, regenerative endodontics aims to regenerate dental pulp-like tissues using two possible strategies: cell transplantation and cell homing. The former requires exogenously transplanted stem cells, co...

    journal_title:International endodontic journal

    pub_type: 杂志文章,评审

    doi:10.1111/iej.12868

    authors: Eramo S,Natali A,Pinna R,Milia E

    更新日期:2018-04-01 00:00:00

  • One-session root canal treatment with antimicrobial photodynamic therapy (aPDT): an in vivo study.

    abstract:AIM:To evaluate the response of the apical and periapical tissues of dog teeth with apical periodontitis after one-session root canal treatment with and without antimicrobial photodynamic therapy (aPDT) compared with the use of an intracanal dressing. METHODOLOGY:Sixty root canals with an induced periapical lesion wer...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12486

    authors: Borsatto MC,Correa-Afonso AM,Lucisano MP,Bezerra da Silva RA,Paula-Silva FW,Nelson-Filho P,Bezerra da Silva LA

    更新日期:2016-06-01 00:00:00

  • Behaviour of human dental pulp cells cultured in a collagen hydrogel scaffold cross-linked with cinnamaldehyde.

    abstract:AIM:To investigate the effects of the cross-linking agent cinnamaldehyde (CA) on differentiation of human dental pulp cells (hDPCs) cultured in a collagen hydrogel, which may be useful as a scaffold for regenerative endodontic therapy. METHODOLOGY:The odontogenic potential of hDPCs exposed to CA was examined using alk...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12592

    authors: Kwon YS,Lee SH,Hwang YC,Rosa V,Lee KW,Min KS

    更新日期:2017-01-01 00:00:00

  • Root canal treatment of a dilacerated mandibular premolar using a novel instrumentation approach. A case report.

    abstract:AIM:To report on a novel method to instrument a dilacerated double-curved mandibular premolar. SUMMARY:A 45-year-old female was referred suffering from diffuse pain emanating from the mandibular right quadrant. The second premolar (tooth 45) was diagnosed with symptomatic irreversible pulpitis. The radiographic examin...

    journal_title:International endodontic journal

    pub_type:

    doi:10.1111/iej.12610

    authors: Chaniotis A,Filippatos C

    更新日期:2017-02-01 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

  • The antibacterial properties of four elements released from dental restorative materials.

    abstract::The antibacterial activity of four elements (zinc, copper, fluoride and mercury), previously reported to be released from dental restorative materials, was investigated. This was carried out using two aerobic micro-organisms isolated from dentine beneath cavities in the ferret. These were grown in the presence of the ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.1989.tb00499.x

    authors: Nourollahi M,Meryon SD

    更新日期:1989-01-01 00:00:00

  • A tactile method for canal length determination in teeth with open apices.

    abstract:AIM:To present a tactile method for working length determination in teeth with open apices and to determine its accuracy and repeatability. METHODOLOGY:Ninety teeth with 129 root canals were prepared to create open apices. The correct working length (CWL) for each canal was determined by introducing a file into the ro...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2009.01636.x

    authors: ElAyouti A,Dima E,Löst C

    更新日期:2009-12-01 00:00:00

  • Accidental swallowing of an endodontic file.

    abstract:AIM:To report the management of an iatrogenic incident in which an endodontic file was swallowed accidentally and passed into the gastrointestinal tract. SUMMARY:A 51-year-old male swallowed a 21 mm, size 30 endodontic file during root canal treatment without rubber dam. In the absence of clinical complications, the p...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2008.01392.x

    authors: Kuo SC,Chen YL

    更新日期:2008-07-01 00:00:00

  • Evaluation of the radiopacity of calcium hydroxide- and glass-ionomer-based root canal sealers.

    abstract:AIM:To evaluate the radiopacity of calcium hydroxide-based root canal sealers (Acroseal, Sealapex and Sealer 26), a glass-ionomer-based sealer (Activ GP Sealer) and a zinc oxide and eugenol-based sealer (Intrafill). METHODOLOGY:Five disc-shaped specimens (10 x 1 mm) were fabricated from each material, according to the...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2007.01309.x

    authors: Tanomaru-Filho M,Jorge EG,Tanomaru JM,Gonçalves M

    更新日期:2008-01-01 00:00:00

  • A quantitative method for determining the antiwashout characteristics of cement-based dental materials including mineral trioxide aggregate.

    abstract:AIM:To introduce and assess a novel method for measuring washout resistance of cement-based dental materials, including mineral trioxide aggregate (MTA), to qualitatively verify the results with a clinical simulation and to evaluate the washout resistance of a new root-end filling material. METHODOLOGY:A method for as...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2012.02108.x

    authors: Formosa LM,Mallia B,Camilleri J

    更新日期:2013-02-01 00:00:00

  • Investigation of the root canal configuration of mandibular first molars in a Taiwan Chinese population.

    abstract:AIM:To investigate the root form and canal morphology of mandibular first molar teeth in a Taiwan Chinese population. METHODOLOGY:A total of 183 mandibular first molars were collected and examined visually through a dissecting microscope after rendering the teeth transparent. The number of roots, number of canals and ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2009.01619.x

    authors: Chen G,Yao H,Tong C

    更新日期:2009-11-01 00:00:00

  • Osteogenic cell response to calcium aluminate-based cement.

    abstract:AIM:To evaluate the effect of a calcium aluminate-based cement (CAC+) on the development of the osteogenic phenotype in vitro. METHODOLOGY:Rat calvaria-derived cells were grown on Thermanox® coverslips for 24 h and then exposed to either samples (4-h set) of CAC+ or mineral trioxide aggregate (MTA) placed on Transwell...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12682

    authors: Castro-Raucci LMS,Teixeira LN,Oliveira IR,Raucci-Neto W,Jacobovitz M,Rosa AL,de Oliveira PT

    更新日期:2017-08-01 00:00:00

  • Radiopacity of root filling materials using digital radiography.

    abstract:AIM:To evaluate radiopacity of root filling materials using digital radiography. METHODOLOGY:The sealers tested were AH Plus, Endofill, EndoREZ and Epiphany. Gutta-percha (Dentsply Maillefer) and Resilon cones were also tested. Acrylic plates, containing six wells, measuring 1 mm in depth and 5 mm in diameter, were pr...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2007.01246.x

    authors: Carvalho-Junior JR,Correr-Sobrinho L,Correr AB,Sinhoreti MA,Consani S,Sousa-Neto MD

    更新日期:2007-07-01 00:00:00

  • The effect of irrigation time, root morphology and dentine thickness on tooth surface strain when using 5% sodium hypochlorite and 17% EDTA.

    abstract:AIM:To evaluate the effect of irrigation with 5% sodium hypochlorite (NaOCl) alone and in conjunction with 17% ethylenediaminetetraacetic acid (EDTA) on tooth surface strain (TSS) and to analyse the influence of irrigation time, root morphology and dentine thickness. METHODOLOGY:Thirty-six single-rooted pre-molars wit...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.2009.01655.x

    authors: Sobhani OE,Gulabivala K,Knowles JC,Ng YL

    更新日期:2010-03-01 00:00:00

  • Efficacy of a sustained-release device containing chlorhexidine and Ca(OH)2 in preventing secondary infection of dentinal tubules.

    abstract::This study was conducted to evaluate the efficacy of the antibacterial activity of Ca(OH)2 and a sustained-release device containing chlorhexidine (SRD) in both sterilization and prevention of secondary infection of the root canal system. Bovine root dentine specimens previously incubated with Streptococcus faecalis w...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.1992.tb00944.x

    authors: Heling I,Steinberg D,Kenig S,Gavrilovich I,Sela MN,Friedman M

    更新日期:1992-01-01 00:00:00

  • Capacity of anaerobic bacteria enclosed in a simulated root canal to induce inflammation.

    abstract::In an effort to simulate the infected dental root canal, bacteria were enclosed in polyethylene tubes that were subcutaneously implanted into rats. Four different bacterial combinations, selected from nine oral species, were tested. The contents of 144 inoculated and implanted 'root canals' were analysed after 2 and 4...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.1989.tb00931.x

    authors: Wu MK,Moorer WR,Wesselink PR

    更新日期:1989-11-01 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

  • Light-cured glass ionomer cement as a retrograde root seal.

    abstract::A light-cured ionomer cement was investigated as a retrograde root seal, without a retrograde cavity. This was compared with the material used in a retrograde cavity, and with a conventional glass ionomer cement, as a seal. The adaptation and sealing ability of the test materials were assessed using a confocal optical...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/j.1365-2591.1993.tb00562.x

    authors: Chong BS,Pitt Ford TR,Watson TF

    更新日期:1993-07-01 00:00:00

  • Evaluation of the mechanical behaviour of PathFile and ProGlider pathfinding nickel-titanium rotary instruments.

    abstract:AIM:To assess and compare the resistance to cyclic fatigue, torsional stress, bending and buckling of ProGlider (PG; Dentsply Maillefer, Ballaigues, Switzerland) instruments with PathFile (PF; Dentsply Maillefer) pathfinding nickel-titanium rotary instruments. METHODOLOGY:Size 16, .02 taper PG and PF instruments were ...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12386

    authors: Elnaghy AM,Elsaka SE

    更新日期:2015-09-01 00:00:00

  • Antimicrobial effectiveness of electro-chemically activated water as an endodontic irrigation solution.

    abstract:AIM:The aim of this in vitro study was to evaluate the antimicrobial effectiveness of electro-chemically activated water (ECA) as an endodontic irrigation solution. METHODOLOGY:The root canals of 60 caries-free, single-rooted, adult, maxillary, anterior human teeth were instrumented and irrigated in a similar method t...

    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.1365-2591.2001.00258.x

    authors: Marais JT,Williams WP

    更新日期:2001-04-01 00:00:00

  • Three-dimensional modelling and concurrent measurements of root anatomy in mandibular first molar mesial roots using micro-computed tomography.

    abstract:AIM:To obtain concurrent radicular measurements in the mesiobuccal (MB) and mesiolingual (ML) canals of mandibular first molars using scanned data of micro-computed tomography (μCT) with novel software. METHODOLOGY:The scanned data from 37 mandibular first molar mesial roots were reconstructed and analysed with custom...

    journal_title:International endodontic journal

    pub_type: 杂志文章

    doi:10.1111/iej.12326

    authors: Lee JK,Yoo YJ,Perinpanayagam H,Ha BH,Lim SM,Oh SR,Gu Y,Chang SW,Zhu Q,Kum KY

    更新日期:2015-04-01 00:00:00