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International Endodontic Journal

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https://www.readbyqxmd.com/read/28708251/efficacy-of-photon-initiated-photoacoustic-streaming-on-apically-extruded-debris-with-different-preparation-systems-in-curved-canals
#1
D Arslan, A Kustarci
AIM: To determine the effect of photon-initiated photoacoustic streaming (PIPS) on the extrusion of debris using multiple-file (ProTaper Next-PTN) and single-file (One Shape-OS) continuous rotary systems in curved canals in human molar teeth. METHODOLOGY: Sixty extracted maxillary first molar teeth with curved mesial roots, mature apices and of similar lengths were selected. Teeth with apical diameters larger than size 15 were discarded. The teeth were randomly divided into 4 experimental groups (n=15 teeth per group) according to the file used and irrigation systems: (1) OS with PIPS with a 2940 nm Er:YAG laser (0...
July 14, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28708240/comparative-analysis-of-general-dental-practitioners-fees-and-scheduled-fees-for-root-canal-treatment-and-coronal-restorations-in-the-adult-population-of-sweden-a-five-year-follow-up-of-data-from-the-swedish-dental-register
#2
E Wigsten, T Kvist, V S Dawson, P-E Isberg, H Fransson
AIM: To investigate the fees charged by Swedish dentists for root fillings, coronal restorations and further dental interventions during a follow-up period of 5-6 years. METHODOLOGY: A total of 248,299 root fillings were linked with the tooth, the patient and the provider and entered into the Swedish Social Insurance Agency register in 2009. The data register also recorded the subsidy-based (scheduled) fee and the fee actually charged for the root fillings. Fees charged for direct or indirect coronal restorations and additional interventions during the follow-up period were also recorded...
July 14, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28700083/torsional-resistance-of-xp-endo-shaper-at-body-temperature-compared-with-several-nickel-titanium-rotary-instruments
#3
A M Elnaghy, S E Elsaka
AIM: To compare the torsional resistance of XP-endo Shaper (XPS; size 30, 0.01 taper, FKG Dentaire, La Chaux-de-Fonds, Switzerland) instruments at body temperature with TRUShape (TRS; size 30, 0.06 taper, Dentsply Tulsa Dental Specialties, Tulsa, OK, USA), ProFile Vortex (PV; size 30, 0.04 taper, Dentsply Tulsa Dental Specialties), and FlexMaster (FM; size 30, 0.04 taper, VDW GmbH, Munich, Germany) nickel-titanium rotary instruments. METHODOLOGY: A metal block with a square-shaped mould (5 mm × 5 mm × 5 mm) was positioned inside a glass-container...
July 12, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28675449/evaluation-of-the-accuracy-of-nine-electronic-apex-locators-by-using-micro-ct
#4
T Connert, M S Judenhofer, M Hülber-J, S Schell, J G Mannheim, B J Pichler, C Löst, A ElAyouti
AIM: To determine the accuracy of locating the apical constriction using apex locators. METHODOLOGY: Extracted teeth were micro-CT scanned preoperatively to localize the apical constriction. Electronic length measurements of 91 root canals were performed using nine electronic apex locators (EAL) connected to a mounting model. Distances from the major foramen were recorded at each scale-bar of the EALs and a file was fixed in the canal at a position indicated by EAL to be the apical constriction...
July 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28667765/the-effects-of-2-hydroxyethyl-methacrylate-on-matrix-metalloproteinases-2-and-9-in-human-pulp-cells-and-odontoblast-like-cells-in-vitro
#5
S Sun, G-L Wang, Y Huang, H Diwu, Y-C Luo, J Su, Y-H Xiao
AIM: To assess the effects of 2-hydroxyethyl methacrylate (HEMA) on proliferation and migration of human pulp cells, as well as on matrix metalloproteinase (MMP-2 and MMP-9) expression in human odontoblast-like cells, contributing to the goal of determining the relationship between resin materials and MMP activity in pulp-dentine complexes. METHODOLOGY: Dental pulp cell cultures were established from pulp tissue of human teeth extracted for orthodontic purposes...
July 1, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28667754/mta-induced-notch-activation-enhances-the-proliferation-of-human-dental-pulp-cells-by-inhibiting-autophagic-flux
#6
W Qiu, B Sun, F He, Y Zhang
AIM: To determine the roles of autophagy and Notch signalling in mineral trioxide aggregate (MTA)-mediated proliferation and differentiation of human dental pulp cells (hDPCs). METHODOLOGY: hDPCs were separated from human healthy molar teeth using collagenase I/dispase II digestion, and then cultured in α-MEM medium with 15% foetal bovine serum. hDPCs were seeded in 96-well plates, and cell counting kit assays were carried out to test their viability. Real-time quantitative polymerase chain reaction (qPCR) was used to evaluate ALP, Runx2, Notch1, Hes1, and Hey1 mRNA levels...
July 1, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28667674/micro-ct-assessment-of-the-shaping-ability-of-four-root-canal-instrumentation-systems-in-oval-shaped-canals
#7
M L Zuolo, A A Zaia, F G Belladonna, E J N L Silva, E M Souza, M A Versiani, R T Lopes, G De-Deus
AIM: To compare the shaping ability of four root canal instrumentation systems in oval-shaped canals using micro-computed tomographic analysis. METHODOLOGY: Forty anatomically matched mandibular incisors were scanned and assigned to four groups (n = 10), according to the canal preparation protocol: BioRace, Reciproc, Self-Adjusting File (SAF) and TRUShape systems. After canal instrumentation, the specimens were re-scanned and the registered pre- and postoperative datasets were examined to evaluate the percentages of accumulated hard-tissue debris, untouched canal areas and dentine removed...
July 1, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28665514/microguided-endodontics-a-method-to-achieve-minimally-invasive-access-cavity-preparation-and-root-canal-location-in-mandibular-incisors-using-a-novel-computer-guided-technique
#8
T Connert, M S Zehnder, M Amato, R Weiger, S Kühl, G Krastl
AIM: To present a novel miniaturized and minimally invasive treatment approach for root canal localization in mandibular incisors with pulp canal calcification and apical periodontitis. SUMMARY: A 51-year-old male patient presented with pain from his mandibular incisors. The patient had a history of severe dental trauma over 30 years ago. Both mandibular central incisors (teeth 31, 41) were tender to percussion and had a yellowish discoloration. They did not respond to thermal and electrical sensitivity tests...
June 30, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28656722/formation-of-spheroids-by-dental-pulp-derived-cells-in-the-presence-of-hypoxia-and-hypoxia-mimetic-agents
#9
K Janjić, B Lilaj, A Moritz, H Agis
AIM: To evaluate the impact of hypoxia and hypoxia mimetic agents (HMA) on the formation and activity of spheroids by dental pulp-derived cells (DPC). METHODOLOGY: DPC on agarose-coated plates were treated with hypoxia and the HMA dimethyloxallyl glycine (DMOG), desferrioxamine (DFO) and L-mimosine (L-MIM). Images of spheroids were taken directly after seeding and at 6h and 24h. Spheroid sizes were quantified by area measurement with ImageJ software. Viability was assessed with Live-Dead staining, MTT and resazurin-based toxicity assay...
June 28, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28654211/cleaning-lateral-morphological-features-of-the-root-canal-the-role-of-streaming-and-cavitation
#10
J P Robinson, R G Macedo, B Verhaagen, M Versluis, P R Cooper, L W M van der Sluis, A D Walmsley
AIM: To investigate the effects of ultrasonic activation file type, lateral canal location and irrigant on the removal of a biofilm-mimicking hydrogel from a fabricated lateral canal. Additionally, the amount of cavitation and streaming was quantified for these parameters. METHODOLOGY: An intracanal sonochemical dosimetry method was used to quantify the cavitation generated by an IrriSafe 25 mm length, size 25 file inside a root canal model filled with filtered degassed/saturated water or 3 different concentrations of NaOCl...
June 27, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28653761/a-prospective-clinical-study-of-regenerative-endodontic-treatment-of-traumatised-immature-teeth-with-necrotic-pulps-using-bi-antibiotic-paste
#11
H Nazzal, K Kenny, A Altimimi, J Kang, M S Duggal
AIM: To evaluate the treatment outcomes of a revitalisation endodontic technique (RET) for the management of traumatised immature teeth with necrotic pulps in children. METHODOLOGY: Fifteen healthy children (age range=7-10 years) with traumatised immature maxillary incisors with necrotic pulps treated with bi-antibiotic revitalisation endodontic techniques were prospectively assessed over approximately two years (mean=22 months). One operator undertook all treatments, clinical reviews and standardised radiographic exposures with radiographic analysis being carried out by two calibrated experienced clinicians...
June 27, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28653756/a-zinc-oxide-modified-hydroxyapatite-based-cement-facilitated-new-crystalline-stoichiometric-and-amorphous-apatite-precipitation-on-dentine
#12
M Toledano, M C Pérez-Álvarez, F S Aguilera, E Osorio, I Cabello, M Toledano-Osorio, R Osorio
AIM: To evaluate the remineralization ability of two endodontic sealer cements. METHODOLOGY: Mid-coronal dentine surfaces were subjected to: i) 37% phosphoric acid (PA) or ii) 0.5 M ethylenediaminetetraacetic acid (EDTA) conditioning prior to the application of two experimental hydroxyapatite-based cements, containing sodium hydroxide (calcypatite) or zinc oxide (oxipatite), respectively. Samples were stored in simulated body fluid for 24 h or 21 d. Remineralization of the dentine surfaces were studied by Raman spectroscopy (mapping with K-means cluster and hierarchical cluster analysis) was undertaken were done...
June 27, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28650522/full-text-publication-rates-of-research-abstracts-presented-at-the-european-society-of-endodontology-ese-congresses-in-the-last-20-years
#13
G N Tzanetakis, N Tzimpoulas, S Floratos, A Agrafioti, E G Kontakiotis, H Shemesh
AIM: To evaluate the full-text publication rates of scientific research abstracts presented at the European Society of Endodontology (ESE) Congresses held between 1993 and 2013 (a total of 11 occasions) and to determine factors associated with the manuscripts. METHODOLOGY: An electronic database search was conducted from January 2015 to December 2016 to identify full text English written publications of the research abstracts presented at the last 11 ESE Biennial Congresses from 1993 to 2013...
June 26, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28649791/bioactivity-and-biomineralization-ability-of-calcium-silicate-based-pulp-capping-materials-after-subcutaneous-implantation
#14
G Hinata, K Yoshiba, L Han, N Edanami, N Yoshiba, T Okiji
AIM: To evaluate the abilities of three calcium silicate-based pulp-capping materials (ProRoot MTA, TheraCal LC, and a prototype tricalcium silicate cement) to produce apatite-like precipitates after being subcutaneously implanted into rats. METHODOLOGY: Polytetrafluoroethylene tubes containing each material were subcutaneously implanted into the backs of Wistar rats. At 7, 14, and 28 days post-implantation, the implants were removed together with the surrounding connective tissue, and fixed in 2...
June 26, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28644527/an-audit-on-technical-quality-of-root-fillings-performed-by-undergraduate-students
#15
W Fong, O Heidarifar, S Killough, M Lappin, I A El Karim
AIM: To evaluate radiographically the technical quality of root fillings performed by undergraduate dental students and to assess whether students were exposed to an appropriate endodontic case mix during their clinical training. METHODOLOGY: A retrospective audit was undertaken evaluating the clinical records of patients who underwent endodontic procedures during the period from September 2015 to June 2016 in the Dental School at Queen's University Belfast, UK...
June 23, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28635100/a-new-system-for-classifying-accessory-canal-morphology
#16
REVIEW
H M A Ahmed, P Neelakantan, P M H Dummer
Thorough knowledge of the anatomical complexities of the root canal system has a direct impact on the effectiveness of canal preparation and filling, and is an essential prerequisite for successful root canal treatment. A wide range of complex variations in root canal anatomy exists, including root canal configuration type, developmental anomalies and more minor canal morphology such as accessory canals and apical deltas. Accessory canals and apical deltas have been associated with pulp disease, primary canal infection, canal reinfection and post-treatment disease...
June 21, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28631418/the-effects-of-biodentine-polycaprolactone-3d-scaffold-with-odontogenesis-properties-on-human-dental-pulp-cells
#17
C-C Ho, H-Y Fang, B Wang, T-H Huang, M-Y Shie
AIM: To determine the feasibility of using three-dimensional printed Biodentine/polycaprolactone composite scaffolds for orthopaedic and dental applications. The physicochemical properties and the odontogenic differentiation of human dental pulp cells (hDPCs) were investigated. METHODOLOGY: Biodentine was well-suspended in ethanol and dropped slowly into molten polycaprolactone with vigorous stirring. The Biodentine/polycaprolactone composite scaffolds were then fabricated into controlled macropore sizes and structures using an extrusion-based three-dimensional (3D) printer...
June 20, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28631388/the-efficacy-of-commercial-tooth-storage-media-for-maintaining-the-viability-of-human-periodontal-ligament-fibroblasts
#18
W Lee, S Stover, M Rasoulianboroujeni, K Sherman, F Fahimipour, E Dashtimoghadam, C Zito, H Jazayeri, L Tayebi
AIM: To evaluate Save-A-Tooth (SAT), EMT Toothsaver (EMT), and Hank's Balanced Salt Solution (HBSS) for their influence on the viability and proliferative capacity of human periodontal ligament fibroblast (HPDLF). METHODOLOGY: Primary HPDLFs were seeded on 96-well cell culture plates and exposed to SAT, EMT, HBSS and water (negative control) for 0.5, 1, 3, 6, 12 and 24 hours at room temperature (22°C). After each exposure time, cell viability was measured by quantifying adenosine triphosphate (ATP) using a luminescent dye...
June 20, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28617966/analysis-of-the-association-of-clinical-factors-and-il4-gene-polymorphisms-with-root-resorption-in-avulsed-teeth-after-1-year-of-replantation
#19
L Roskamp, P C Trevilatto, C M Souza, U X Silva Neto, E Carneiro, L F Fariniuk, V P D Westphalen
AIM: To investigate the association of clinical variables and polymorphisms (tag SNPs) in the interleukin 4 (IL4) gene, with the prognosis of avulsed and replanted teeth. METHODOLOGY: Ninety-four patients who suffered avulsion and had their teeth replanted and endodontically treated were included. Periapical radiographs were obtained soon after tooth replantation and after 1 year. For genotypic IL4 gene analysis, the DNA of the oral mucosa cells was collected, and polymorphisms investigated by Real Time-PCR...
June 15, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28568134/lysyl-oxidase-mediated-vegf-induced-differentiation-and-angiogenesis-in-human-dental-pulp-cells
#20
W J Bae, J K Yi, J Park, S K Kang, J H Jang, E C Kim
AIM: To investigate the effects of recombinant human vascular endothelial growth factor (rhVEGF) on odontoblastic differentiation, in vitro angiogenesis, and expression and activity of lysyl oxidase (LOX) in human dental pulp cells (HDPCs), compared with rhFGF-2. To identify the underlying molecular mechanisms, the study focused on whether LOX was responsible for the actions of rhVEGF. METHODOLOGY: rhVEGF was constructed using the pBAD-HisA plasmid in Escherichia coli...
June 1, 2017: International Endodontic Journal
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