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International Endodontic Journal

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https://www.readbyqxmd.com/read/28470953/mechanical-characteristics-of-counterfeit-reciproc-instruments-a-call-for-attention
#1
C S Rodrigues, V T L Vieira, H S Antunes, G De-Deus, C N Elias, E J L Moreira, E J N L Silva
AIM: To report here the main differences between the visual aspects of original and counterfeit Reciproc instruments, together with an evaluation of instrument bending resistance, cyclic fatigue, surface finish, Vickers microhardness, and chemical composition. METHODOLOGY: The visual aspects of original Reciproc R25 (VDW, Munich, Germany) and counterfeit Reciproc R25 instruments (claimed to be original, supposedly with dimensions similar to those of Reciproc R25 files, bought at www...
May 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28470859/zirconium-oxide-and-niobium-oxide-used-as-radiopacifiers-of-a-calcium-silicate-based-material-stimulate-fibroblast-proliferation-and-collagen-formation
#2
G F Silva, J M Guerreiro-Tanomaru, T S da Fonseca, M I B Bernardi, E Sasso-Cerri, M Tanomaru-Filho, P S Cerri
AIM: To evaluate the influence of the addition of microparticulate (micro) and nanoparticulate (nano) zirconium oxide (ZrO2 ) and niobium pentoxide (Nb2 O5 ) to a calcium silicate-based cement (CS) on the subcutaneous healing process in rats compared with MTA-Angelus(™) . METHODOLOGY: In each rat, two polyethylene tubes filled with the following materials: 1) MTA; 2) CS+ZrO2 micro; 3) CS+ZrO2 nano; 4) CS+Nb2 O5 micro or 5) CS+Nb2 O5 nano were implanted subcutaneously; empty polyethylene tubes were used in the Control group...
May 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28470849/influence-of-early-mineral-deposits-of-silicate-and-aluminate-based-cements-on-push-out-bond-strength-to-root-dentine
#3
S Silva do Carmo, F F P Néspoli, L Bachmann, C E S Miranda, L M S Castro-Raucci, I R Oliveira, W Raucci-Neto
AIM: To evaluate mineral trioxide aggregate (MTA), Biodentine, and several formulations of calcium aluminate cements (CACb) in terms of their ability to release calcium ions (Ca(2+) ) and form apatite-like precipitates after short-term immersion in phosphate-buffered saline (PBS) and its influence on the bond strength to the root-end cavity. METHODOLOGY: Ten samples of MTA, Biodentine, CACb, and calcium-enriched aluminate cement (CACb+) were placed in contact with PBS or deionized water for 14 days...
May 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28470747/effect-of-interrupted-motion-on-the-cyclic-fatigue-resistance-of-reciprocating-nickel-titanium-instruments
#4
C Keskin, U Inan, M Demiral
AIM: To compare the cyclic fatigue resistances of WaveOne Gold (Denstply Sirona, Ballaigues, Switzerland), WaveOne (Dentsply Sirona), and Reciproc (VDW, Munich, Germany) in interrupted reciprocation. METHODOLOGY: Three groups of 18 instruments each of WaveOne Gold Primary, WaveOne Primary, and Reciproc R25 were subjected to cyclic fatigue tests in reciprocation and interrupted reciprocation. The instruments in group 1 were tested in reciprocation, whereas in groups 2 and 3, reciprocation was interrupted for 1 s in every 5 s and 10 s, respectively...
May 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28467618/effectiveness-of-xp-endo-finisher-and-xp-endo-finisher-r-in-removing-root-filling-remnants-a-micro-ct-study
#5
E J N L Silva, F G Belladonna, A S Zuolo, E Rodrigues, I C Ehrhardt, E M Souza, G De-Deus
AIM: To evaluate the efficacy of filling material removal from oval-shaped canals after the use of supplementary files (XP-endo Finisher and XP-endo Finisher R) through micro-computed tomographic (micro-CT) analysis. METHODOLOGY: The root canals of twenty maxillary single-rooted teeth were prepared with Reciproc R25 files and filled with gutta-percha and AH Plus sealer using the continuous wave of condensation technique. The root canals were then retreated using Reciproc R25 and R40 instruments...
May 3, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28452115/properties-of-neomta-plus-and-mta-plus-cements-for-endodontics
#6
F Siboni, P Taddei, C Prati, M G Gandolfi
AIM: To test a novel calcium silicate cement mixed with a water-based gel (NoeMTA Plus) with regards to chemical-physical properties and apatite forming ability. METHODOLOGY: NeoMTA Plus (Avalon Biomed Inc. Bradenton, FL, USA; lot. 2014090301), and a commercial MTA-based material with similar properties (MTA Plus, Prevest Denpro Limited, Jammu, India; lot. 41001) were tested for ion-releasing ability, initial and final setting times, radiopacity, open and impervious porosity and apparent porosity, water sorption, weight loss, solubility, ability to nucleate calcium phosphates (CaP) after immersion in HBSS (Hank's Balance Salt Solution) by ESEM-EDX and Micro-Raman spectroscopy...
April 28, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28439952/comparison-of-cytotoxicity-genotoxicity-and-immunological-inflammatory-biomarker-activity-of-several-endodontic-sealers-against-immortalized-human-pulp-cells
#7
F C Martinho, S E A Camargo, A M M Fernandes, M S Campos, R F Prado, C H R Camargo, M C Valera
AIM: To establish an SV40 T-Ag-transfected cell line of human pulp-derived cells in order to compare the cytotoxicity, genotoxicity and to investigate the activities of immunological biomarkers of several endodontic sealers. METHODOLOGY: Primary human pulp cells and transfected cells were cultured. Cell morphology and proliferation were analyzed, and the expression of cell-specific gene transcripts and proteins was detected by RT-PCR and immunohistochemistry. Transfection of human pulp-derived cells resulted in an immortalized cell line retaining phenotypic characteristics from the primarily cells tested...
April 25, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28439929/the-roles-of-autophagy-and-hypoxia-in-human-inflammatory-periapical-lesions
#8
H Y Huang, W C Wang, P Y Lin, C P Huang, C Y Chen, Y K Chen
AIM: To determine the expressions of hypoxia-related [hypoxia-inducible transcription factors (HIF)-1α, BCL2/adenovirus E1B 19 kDa protein-interacting protein 3 (BNIP3), and phospho-adenosine monophosphate activated protein kinase (pAMPK)] and autophagy-related [microtubule-associated protein 1 light chain 3 (LC3), beclin-1 (BECN-1), autophagy-related gene (Atg)5-12, and p62] proteins in human inflammatory periapical lesions. METHODOLOGY: Fifteen samples of radicular cysts (RCs) and 21 periapical granulomas (PGs), combined with 17 healthy dental pulp tissues were examined...
April 25, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28439928/effect-of-ultrasonic-activation-on-the-reduction-of-bacteria-and-endotoxins-in-root-canals-a-randomized-clinical-trial
#9
V C Nakamura, E T Pinheiro, L C Prado, A C Silveira, A P L Carvalho, M P A Mayer, G Gavini
AIM: This randomized clinical trial aimed to compare the effectiveness of ultrasonic activation with that of a non-activated irrigation on the removal of bacteria and endotoxin from root canals. METHODOLOGY: Fifty patients with necrotic pulps and asymptomatic apical periodontitis were randomly allocated into two groups according to the final irrigation protocol after root canal preparation: Group UI - ultrasonic irrigation (n=25) and Group NI - needle irrigation (n=25)...
April 25, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28439909/effect-of-thermally%C3%A2-deposited-siloxane-methacrylate-coating-on-bonding-to-glass-fibre-posts
#10
F P Silva, A L Faria-E-Silva, R R Moraes, A O Ogliari, G R Reis, A R F Oliveira, M S Menezes
AIM: To evaluate the alterations promoted by a thermally deposited siloxane-methacrylate coating on the surface of glass-fibre posts and its effect on the bond strength of resin-core materials to the posts. METHODOLOGY: Fibre post surfaces were treated with experimental thermally deposited siloxane-methacrylate coatings or clinically available treatments (i.e., hydrogen peroxide and methylene chloride); non-treated posts were used as controls. The contact angles formed between the post surface and the water/adhesive were measured with a tensiometer...
April 25, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28439906/regenerative-endodontic-treatment-of-perforated-internal-root-resorption-a-case-report
#11
M E Kaval, P Güneri, M K Çalışkan
AIM: To present the regenerative endodontic treatment procedure of a perforated internal root resorption case and its' clinical and radiographic findings after two years. SUMMARY: A 14-year-old female patient was referred complaining of moderate pain associated with her maxillary left lateral incisor. After radiographic examination, a perforated internal resorption lesion in the middle third of tooth 22 was detected. Under local anaesthesia and rubber dam isolation, an access cavity was prepared and the root canal was shaped using K-files under copious irrigation with 1% NaOCl, 17% EDTA and distilled water...
April 25, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28436043/european-society-of-endodontology-position-statement-the-use-of-antibiotics-in-endodontics
#12
REVIEW
J J Segura-Egea, K Gould, B Hakan Şen, P Jonasson, E Cotti, A Mazzoni, H Sunay, L Tjäderhane, P M H Dummer
This Position Statement represents a consensus of an expert committee convened by the European Society of Endodontology (ESE) on Antibiotics in Endodontics. The statement is based on current scientific evidence as well as the expertise of the committee. The goal is to provide dentists and other healthcare workers with evidence-based criteria for when to use antibiotics in the treatment of endodontic infections, traumatic injuries of the teeth, revascularisation procedures in immature teeth with pulp necrosis, and in prophylaxis for medically compromised patients...
April 24, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28390072/biocompatibility-and-mineralized-nodule-formation-of-neo-mta-plus-and-an-experimental-tricalcium-silicate-cement-containing-tantalum-oxide
#13
M Tanomaru-Filho, A S Andrade, E M Rodrigues, K S Viola, G Faria, J Camilleri, J M Guerreiro-Tanomaru
AIM: To evaluate the biocompatibility and mineralized nodule formation of an experimental tricalcium silicate cement with tantalum oxide (TSC/Ta2 O5 ) as radiopacifier, Neo MTA Plus (Avalon Biomed Inc., Bradenton, FL, USA) and MTA (Angelus, Londrina, PR, Brazil) on human osteoblast-like cells (Saos-2). METHODOLOGY: Biocompatibility was evaluated by 3-(4,5-dimethyl-thiazoyl)-2,5-diphenyl-tetrazolium bromide (MTT) and neutral red (NR) assays, after exposure of Saos-2 to cement extracts at 1 : 1, 1 : 2, 1 : 4 and 1 : 8 dilutions for 24 h...
April 8, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28375575/counter-clockwise-or-clockwise-reciprocating-motion-for-oval-root-canal-preparation-a-micro-ct-analysis
#14
C G Espir, C A Nascimento-Mendes, J M Guerreiro-Tanomaru, L G Freire, G Gavini, M Tanomaru-Filho
AIM: To evaluate oval root canal preparation using one or two instruments in counter-clockwise or clockwise reciprocating motion. METHODOLOGY: The radiographic diameter of mandibular human incisors was evaluated and oval canals were selected (2≤ Diameter Ratio ≤4). Fifty-seven teeth were assigned to root canal preparation (n=19): Reciproc 40 (R40) in a counter-clockwise reciprocating motion; MTwo size 40, .06 taper (M 40.06) in a clockwise reciprocating motion or MTwo size 20, ...
April 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28375572/dental-students-knowledge-regarding-the-indications-for-antibiotics-in-the-management-of-endodontic-infections
#15
M Martín-Jiménez, B Martín-Biedma, J López-López, O Alonso-Ezpeleta, E Velasco-Ortega, M C Jiménez-Sánchez, J J Segura-Egea
AIM: To determine the knowledge of undergraduate Spanish dental students regarding the indications of systemic antibiotics in the management of endodontic infections. METHODOLOGY: The final year dental students from four Spanish Dental Schools were requested to answer a one-page questionnaire on the indications for systemic antibiotics in the treatment of endodontic infections. One hundred and seventy-five students were asked to participate in this research. Data were analysed using descriptive statistics and chi square test...
April 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28375564/effects-of-histone-deacetylase-inhibitors-on-regenerative-cell-responses-in-human-dental-pulp-cells
#16
Z Luo, Z Wang, X He, N Liu, B Liu, L Sun, J Wang, F Ma, H Duncan, W He, P Cooper
AIM: To investigate the growth, migratory and adhesive effects of Trichostatin A (TSA) and Valproic acid (VPA), two HDACis, on hDPSCs. METHODOLOGY: To verify that TSA or VPA functions as an HDAC inhibitor, the expressions of histone H3 and H4 were examined using Western blotting analysis. hDPSC growth and metabolic activity was evaluated by MTT viability analysis at different time-points and by cell count experiments. The expression of cell cycle regulatory and the apoptosis associated proteins were examined by Western blot analysis...
April 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28375561/physicochemical-properties-and-cytotoxicity-of-an-experimental-resin-based-pulp-capping-material-containing-the-quaternary-ammonium-salt-and-portland-cement
#17
Y W Yang, F Yu, H C Zhang, Y Dong, Y N Qiu, Y Jiao, X D Xing, M Tian, L Huang, J H Chen
AIM: To evaluate in vitro the physicochemical properties, cytotoxicity and calcium phosphate nucleation of an experimental light-curable pulp capping material composed of a resin with antibacterial monomer (MAE-DB) and Portland cement (PC). METHODOLOGY: The experimental material was prepared by mixing PC with a resin containing MAE-DB at a 2 : 1 ratio. Cured pure resin containing MAE-DB served as control resin. ProRoot MTA and Dycal served as commercial controls...
April 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28370026/the-effect-of-mixing-method-on-tricalcium-silicate-based-cement
#18
J A Duque, S L Fernandes, J P Bubola, M A H Duarte, J Camilleri, M A Marciano
AIM: To evaluate the effect of three methods of mixing on the physical and chemical properties of tricalcium silicate-based cements. METHODOLOGY: The materials evaluated were MTA Angelus and Portland cement with 20% zirconium oxide (PC-20-Zr). The cements were mixed using a 3:1 powder to liquid ratio. The mixing methods were: manual (m), trituration (tr) and ultrasonic (us) activation. The materials were characterized by means of scanning electron microscope (SEM) and energy dispersive x-ray spectroscopy (EDS)...
March 30, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28370327/does-the-volume-of-supplemental-intraligamentary-injections-affect-the-anaesthetic-success-rate-after-a-failed-primary-inferior-alveolar-nerve-block-a-randomized-double-blind-clinical-trial
#19
V Aggarwal, M Singla, S Miglani, S Kohli, V Sharma, S S Bhasin
AIM: To investigate the efficacy of 0.2 mL vs. 0.6 mL of 2% lidocaine when given as a supplementary intraligamentary injection after a failed inferior alveolar nerve block (IANB) METHODOLOGY: Ninety- seven adult patients with symptomatic irreversible pulpits received an IANB and root canal treatment was initiated. Pain during treatment was recorded using a visual analogue scale (Heft-Parker VAS). Patients with unsuccessful anaesthesia (n=78) randomly received intraligamentary injection of either 0...
March 28, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28333374/odontoclastogenesis-of-mouse-papilla-derived-mdpc-23-cells-induced-by-lps
#20
C Li, W T Qi, H W Jiang
AIM: To investigate the role of LPS in the odontoclast differentiation of MDPC-23 cells. It was hypothesized that MDPC 23 odontoblast-like cells may function as odontoclasts under the influence of LPS. METHODOLOGY: MDPC-23 cells were cultured in the presence of 0.1 or 1 μg/mL LPS for 6 days. Cell viability was determined using the CCK8 assay. TRAP staining, dentine resorption assay and ROS detection by confocal laser scanning microscope were used to test the odontoclast-like function of the induced cells...
March 23, 2017: International Endodontic Journal
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