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Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc

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https://www.readbyqxmd.com/read/30230647/influence-of-ultrasonic-activation-using-different-final-irrigants-on-antimicrobial-activity-smear-layer-removal-and-bond-strength-of-filling-material
#1
Matheus Albino Souza, Igor Paim Hoffmann, Vitor Hugo Sanches Menchik, Julia Zandoná, Caroline Tumelero Dias, Huriel Scartazzini Palhano, Charise Dallazem Bertol, Luciana Grazziotin Rossato-Grando
The aim of this study was to evaluate the influence of ultrasonic activation (US) over final irrigants on antimicrobial activity, smear layer removal and bond strength. The root canals of 180 extracted human teeth were distributed into three experimental tests (n = 60). In each test, the samples were subdivided into six groups (n = 10) according to final irrigation protocols: G1:distilled water (DW); G2:DW + US; G3:17% EDTA; G4:QMix; G5:17% EDTA + US; and G6:QMix + US. The antimicrobial activity was evaluated by counting of colony-forming units (CFUs), the smear layer removal by scanning electron microscopy and the bond strength by push-out test...
September 19, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30230129/efficacy-of-different-irrigation-methods-on-dentinal-tubule-penetration-of-chlorhexidine-qmix-and-irritrol-a-confocal-laser-scanning-microscopy-study
#2
Meltem Küçük, Fatma Kermeoğlu
The aim of this in vitro study was to compare the percentage of penetration of three final irrigant into the dentinal tubules after application of several irrigation techniques. Mandibular premolars were divided into nine groups (n:10): chlorhexidine (CHX) + conventional syringe irrigation (CI), CHX + EndoActivator (SI), CHX + Er,Cr:YSGG laser (LAI), QMix + CI, QMix + SI, QMix + LAI, Irritrol + CI, Irritrol + SI and Irritrol + LAI. Following irrigation, all roots were horizontally sectioned at 2 mm and 5 mm from the apex and examined using a confocal laser scanning microscopy...
September 19, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30230115/evaluation-of-root-canal-morphology-of-maxillary-premolars-a-cone-beam-computed-tomography-study
#3
Carolina Oliveira de Lima, Laura Campos de Souza, Karina Lopes Devito, Maíra do Prado, Celso Neiva Campos
The aim of this study was to evaluate the root canal configuration of maxillary premolars using cone-beam computed tomography (CBCT). CBCT images of 999 maxillary premolars from a database were analysed to determine the frequency of the number of roots, root canals and Vertucci's classification. The associations among these variables were evaluated by Chi-square test (P < 0.05). In the first premolars, 42.2% of single-rooted teeth had a type II configuration, whereas 98.7% of 2-rooted teeth showed type IV...
September 19, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30230109/effect-of-root-canal-debridement-on-inflammatory-cytokine-levels
#4
Sultan Omer Sheriff, Jue Ann Soh, Nivasheni A/P Ramar, Shaju J Pulikkotil, Venkateshbabu Nagendrababu, Prasanna Neelakantan, Fabian Davamani Amalraj
In endodontic infections, inflammatory mediators such as cytokines are released, recruited and retained until the infection is eradicated. Root canal therapy is performed to prevent the spread of infection. The aim of this study was to investigate the effects of root canal debridement (cleaning and shaping) on periapical inflammation by measuring the levels of inflammatory cytokines, Interleukin-8 (IL-8) and Interleukin-10 (IL-10). The study includes twenty patients with pulp necrosis and asymptomatic apical periodontitis...
September 19, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30230103/mandibular-canines-with-additional-roots-an-ex-vivo-study-of-the-external-and-internal-morphology
#5
Panagiotis Beltes, Eleni Kantilieraki, Maria-Elpida Kalaitzoglou, Charalampos Beltes, Christos Angelopoulos
The aim of this study was to investigate the root and root canal morphologies of mandibular canines with additional roots using cone-beam computed tomography. Seventy-seven extracted two-rooted and one-three-rooted permanent human mandibular canines were selected. Aspects of the external morphology evaluated were crown length, root length, total length, root bifurcation distance from the cementoenamel junction, root size, and direction of the root curvature in the apical third. Features of internal morphology assessed were root canal number per root, root canal bifurcation distance from the cementoenamel junction, and the angle between the buccal or lingual canal and the main canal...
September 19, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30129090/external-invasive-resorption-possible-coexisting-factors-and-demographic-and-clinical-characteristics
#6
Avi Shemesh, Avi Levin, Joe Ben Itzhak, Yair Brosh, Evgeny Braverman, Gabriel Batashvili, Michael Solomonov
The purpose of this retrospective study was to identify the coexisting factors for EIR and to characterise EIR clinically and demographically. All cases of EIR that were referred to the endodontic department between 2011 to 2016 and diagnosed by an endodontist were evaluated. Demographic and clinical characteristics were collected and evaluated. Thirty-eight cases of EIR diagnosed between 2011 and 2016 were included in the study. Seventy-one percent of EIR cases were misdiagnosed by general practitioners. The most affected teeth were the maxillary central incisors (29% of cases) and mandibular molars (26%)...
August 20, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30113751/external-invasive-resorption-case-report-of-a-rapidly-progressive-process-in-an-impacted-maxillary-canine-during-orthodontic-treatment
#7
Avi Shemesh, Galit Birnboim-Blau, Ronen Zoizner, Joe Ben Itzhak, Michael Solomonov
External invasive resorption (EIR) is a type of external resorption that can involve the coronal, middle and apical parts of the root in its advanced stages and results in progressive loss of tooth structure. Common potential predisposing factors for EIR are orthodontic treatment and trauma. The EIR progression rate has not been described previously. This case report describes rapidly progressive EIR in an impacted maxillary canine after surgical exposure and application of directional orthodontic traction over 8 months...
August 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30113742/effectiveness-of-calcium-and-sodium-hypochlorite-in-association-with-reciprocating-instrumentation-on-decontamination-of-root-canals-infected-with-enterococcus-faecalis
#8
Yuri Dal Bello, Gean I Mezzalira, Luis A Jaguszewski, Igor P Hoffmann, Vitor Hugo S Menchik, Doglas Cecchin, Matheus A Souza
The aim of this study was to evaluate the antimicrobial activity of sodium and calcium hypochlorite utilising reciprocating instrumentation. Sixty root canals were inoculated with E. faecalis for 14 days. Samples were divided into six groups according to decontamination protocol: G1: no treatment, G2: distilled water, G3: 2.5% sodium hypochlorite, G4: 2.5% calcium hypochlorite, G5: 5.25% sodium hypochlorite and G6: 5.25% calcium hypochlorite. Instrumentation was performed with Wave One reciprocating system (Dentsply Sirona Endodontics, York, PA, USA) in groups G2 to G6...
August 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30113741/undergraduate-dentistry-students-perception-of-difficulties-regarding-endodontic-treatment
#9
Lorrane G Tavares, Stella M F Lima, Miriane G Lima, Marcos P Arruda, Thiago C Menegazzi, Taia M B Rezende
The present study aimed to identify students' perceptions of endodontic treatment at a Brazilian university through a survey, which analysed student profiles and their difficulties in 2016. One hundred and two students who had experienced endodontic, laboratory or clinical procedures answered a survey based on their experiences, regarding their perceptions, experience and self-confidence levels. Results demonstrated that there was no significant difficulty among students regarding anaesthesia, rubber dam use, chamber access, working length determination, instrumentation, root filling and temporary restoration procedures during endodontic treatment...
August 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30113740/endodontic-treatment-of-a-hypertaurodontic-mandibular-left-second-molar-in-a-patient-with-many-taurodonts-combined-with-multiple-pulp-stones
#10
Adrian Lim, Justine Le Clerc
Taurodontism is a rare embryologic anomaly of teeth, defined by an apical displacement of the furcation of roots and enlarged pulp chambers. Taurodontism has been classified as hypo-, meso- or hypertaurodontism according to the severity of the anomaly. The aim of this case report was to illustrate a clinical case with multiple bilateral taurodonts and to describe the endodontic management of the hypertaurodontic mandibular left second molar with a C-shaped canal and extensive dental pulp calcifications. A healthy 20-year-old male patient was referred for the endodontic treatment of his lower left second molar...
August 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30113736/antimicrobial-efficacy-of-clindamycin-and-triple-antibiotic-paste-as-root-canal-medicaments-on-tubular-infection-an-in-vitro-study
#11
Nazanin Zargar, Motahare Rayat Hosein Abadi, Mohammad Sabeti, Zahra Yadegari, Alireza Akbarzadeh Baghban, Omid Dianat
This study compared the antibacterial effect of 2% clindamycin and 2% and 100% concentration of triple antibiotic paste (TAP) on an Enterococcus faecalis biofilm. Dentinal tubules of 100 root specimens were infected and randomly assigned to five groups. A total of 1000 mg mL-1 of TAP, 20 mg mL-1 of TAP and clindamycin, calcium hydroxide or methylcellulose (control) were placed in the root canal for 1 week. After treatment, dentine shavings were collected from 200 and 400 μm dentine depth and the number of colony-forming units (CFU) per mg was determined...
August 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30113735/classification-and-cyclic-fatigue-evaluation-of-new-kinematics-for-endodontic-instruments
#12
Gianluca Gambarini, Lucila Piasecki, Gabriele Miccoli, Gianfranco Gaimari, Roberto Di Giorgio, Dario Di Nardo, Adham A Azim, Luca Testarelli
This study evaluated the effect of new motions of the motor TriAuto ZX2 on the cyclic fatigue of endodontic instruments. Vortex Blue 35.06 instruments were divided into four groups (n = 10) and tested for fatigue in a curved artificial canal (90° and 2 mm radius) using the following motions: continuous rotation (CR), Optimum Torque Reverse (OTR) set at 180° and the Optimum Glide Path (OGP), which was tested at 90° and 240°. The time to fracture (TTF) and the lengths of the fractured fragments were recorded...
August 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30113734/quantitative-analysis-of-apically-extruded-bacteria-following-preparation-of-curved-canals-with-three-systems
#13
Laura J Cabreira, Luciana F Gominho, Isabela N Rôças, Nilton Dessaune-Neto, José F Siqueira, Flávio R Alves
This study compared the amount of apically extruded bacteria following preparation of curved root canals using two continuously rotating multifile and one reciprocating single-file systems. Mesiobuccal canals from maxillary molars were contaminated with Enterococcus faecalis and divided into three groups according to the instrumentation system: Reciproc (R25 instrument, 25/.08), BT-RaCe (10/.06, 35/.00 and 35/.04), and Mtwo (25/.06, 30/.05 and 35/.04). Apically extruded material was collected by a customized apparatus with 1...
August 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30113117/computed-microtomography-study-of-untreated-shaped-and-filled-mesiobuccal-canals-of-maxillary-first-molars
#14
Daniele Angerame, Matteo De Biasi, Francesco Brun, Gianluca Turco, Vittorio Franco
This study assessed the effectiveness of modern endodontic shaping and filling procedures on mesiobuccal roots of maxillary molars with two canals. The canals of 20 mesiobuccal roots were treated with Mtwo rotary files, passive ultrasonic irrigation and Guttafusion obturators. X-ray computed microtomography analysis was carried out prior to treatment, after canal shaping and after canal filling to determine the alterations of the canal volume before and after the instrumentation, the volume of the hard tissue debris, and percentage of the volume occupied by filling materials...
August 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30105888/post-treatment-apical-periodontitis-related-to-the-technical-quality-of-root-fillings-and-restorations-in-thai-population
#15
Panupong Thampibul, Jeeraphat Jantarat, Raweewan Arayasantiparb
The aim of this study was to investigate the post-treatment apical periodontitis in endodontically treated teeth related to the technical quality of root fillings and restorations in Thai population. Full-mouth periapical radiographs from Thai patients attending the Faculty of Dentistry, Mahidol University, Thailand were examined. The periapical status, quality of root fillings and coronal restorations, existence of intraradicular post and its relationship to the root fillings were evaluated. Among 1586 patients, 37...
August 13, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30105836/lubrication-during-root-canal-treatment
#16
REVIEW
Nicholas Chandler, Deepak Chellappa
Lubrication is involved in all root canal treatment phases, from dental dam placement to canal obturation. Most often associated with instrumentation, lubrication is required to facilitate the mechanical action of hand/rotary files and to help emulsify and suspend the debris produced. Aqueous irrigation solutions such as sodium hypochlorite and ethylenediaminetetraacetic acid (EDTA) should be regarded as lubricants, but paste-type substances are marketed specifically for this purpose. As more patients demand the retention of challenging teeth with narrow and curved root canals, the importance of lubrication in all aspects of root canal treatment must be acknowledged...
August 13, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30105835/antimicrobial-efficacy-of-0-5-peracetic-acid-and-edta-with-passive-ultrasonic-or-manual-agitation-in-an-enterococcus-faecalis-biofilm-model
#17
Rafael C Hartmann, Lilian Neuvald, Valdir Barth, Jose Antônio Poli de Figueiredo, Sílvia Dias de Oliveira, Roberta Kochenberger Scarparo, Silvana Beltrami Waltrick, Giampiero Rossi-Fedele
We compared the antimicrobial efficacy of EDTA and 0.5% peracetic acid (PAA), with manual agitation (MA) or passive ultrasonic irrigation (PUI) in an Enterococcus faecalis biofilm model. Fifty-five single-rooted human premolar teeth were chemo-mechanically prepared and inoculated with E. faecalis for biofilm formation. These were divided into five groups (n = 11): saline solution, PAA+MA, PAA+PUI, EDTA+MA and EDTA+PUI. Root canal sampling and scanning electron microscopy of the canal lumen and dentinal tubule areas at the different root thirds were performed...
August 13, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/30105768/effect-of-different-protocols-of-eugenol-removal-on-the-bond-strength-between-the-fibre-post-and-root-dentin
#18
Emanuele de Oliveira, Doglas Cecchin, Daniela C Miyagaki, Ana L C de Moura, Alana Disarz, Matheus A Souza, Ana P Farina
The aim of this study was to evaluate the bond strength between the fibre post and root dentin after different cleaning protocols to remove eugenol from dentin. The residues and elemental composition of dentin were analysed using SEM and EDS. Bovine incisor roots were obturated with eugenol-based sealer. The post space was prepared, and the roots were divided into the following groups according to the cleaning protocol: unfilled (negative control), saline solution (positive control), 70% ethanol, acetone and 70% isopropyl alcohol...
August 13, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/29808602/a-comparison-of-hydroxyl-ion-diffusion-through-root-dentine-from-various-calcium-hydroxide-preparations
#19
Emanuel Plataniotis, Paul Abbott
Different calcium hydroxide [Ca(OH)2 ] formulations are available. The aim was to assess differences in hydroxyl ion release with different formulations. Sixty-six teeth were divided one control (n = 6) and four experimental (n = 15) groups: (i) Pulpdent Paste; (ii): DT Temporary Dressing; (iii): Ca(OH)2 powder/saline; (iv): Ca(OH)2 points; (v): no medicament. pH was measured in inner dentine and outer dentine cavities over 12 weeks. Inner dentine pH rose rapidly for all groups except the points and controls...
May 28, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/29756400/ph-changes-in-radicular-dentine-associated-with-calcium-hydroxide-and-corticosteroid-antibiotic-pastes
#20
Michael Cai, Paul Abbott, Jacqueline Castro Salgado
The aim was to compare hydroxyl ion diffusion through dentine following placement of calcium hydroxide and Ledermix paste. Thirty-six teeth were divided into one control (n = 6) and three experimental (n = 10) groups - (i) Pulpdent paste; (ii) Pulpdent/Ledermix pastes; (iii) Ledermix paste and (iv) Saline. pH was measured in inner and outer dentine cavities over 12 months. Inner dentine time to maximum pH (Tmax ) was 1 week for Pulpdent and 2 weeks for Pulpdent/Ledermix. Pulpdent's outer dentine Tmax was 4 weeks and Pulpdent/Ledermix was 10 weeks...
May 13, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
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