Abstract：
INTRODUCTION:The purpose of this study was to evaluate the effects of endodontic irrigants on the push-out strength and hydration behavior of accelerated mineral trioxide aggregate (MTA) in its early setting phase. METHODS:In an in vitro perforation model, MTA with or without 10% CaCl(2) was condensed and allowed to initial set for 10 minutes. The samples were divided into four groups (n = 10) to be immersed into either 3.5% sodium hypochlorite (NaOCl) or 2% chlorhexidine gluconate (CHX) for 30 minutes and then allowed to set for 48 hours. In the control group, a wet cotton pellet was placed over MTA. The maximum force applied to the set MTA mixture before dislodgement was recorded. Irrigant-treated surfaces were examined using a scanning electron microscope (SEM). Chemical elements of these surfaces were also analyzed by energy dispersive x-ray spectroscope (EDS). RESULTS:The push-out strength of group A1 (NaOCl-treated accelerated MTA) was the highest of all groups. When compared with nonaccelerated MTA, CaCl(2)-accelerated MTA showed significantly higher push-out strength (p < 0.05). NaOCl-treated groups showed significantly higher push-out strength than CHX-treated groups (p < 0.05). Scanning electron microscopic examination and EDS analysis showed that the formation of calcium hydroxide crystals on accelerated MTA exposed to NaOCl was increased compared with those of the control group. CONCLUSION:These findings imply that the use of accelerated MTA under the NaOCl irrigation was effective in perforation repair without altering its hydration behavior even in the early setting phase.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Hong ST,Bae KS,Baek SH,Kum KY,Shon WJ,Lee Wdoi
10.1016/j.joen.2010.08.039subject
Has Abstractpub_date
2010-12-01 00:00:00pages
1995-9issue
12eissn
0099-2399issn
1878-3554pii
S0099-2399(10)00715-6journal_volume
36pub_type
杂志文章abstract：INTRODUCTION:The aim of this study was to evaluate the root canal preparation in flat-oval canals treated with either rotary or self-adjusting file (SAF) by using micro-tomography analysis. METHODS:Forty mandibular incisors were scanned before and after root canal instrumentation with rotary instruments (n = 20) or SA...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2011.03.017
更新日期：2011-07-01 00:00:00
abstract：:The biocompatibility and apical microleakage of tricalcium phosphate based Sankin Apatite (SA) Type I, II, and III root canal sealers were investigated. Teflon tubes containing freshly mixed test materials were implanted in the subcutaneous tissue of mice. The observation periods were 24 h, 7, and 30 days, after which...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/s0099-2399(97)80255-5
更新日期：1997-02-01 00:00:00
abstract：:This study investigated the sealing properties of cold laterally compacted gutta percha and Thermafil applied over different apically fractured rotary nickel-titanium files. Extracted human premolars were prepared by using ProTaper (Dentsply-Maillefer, Ballaigues, Switzerland) or ProFile (Dentsply-Maillefer) systems (...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2007.10.023
更新日期：2008-02-01 00:00:00
abstract：INTRODUCTION:Enterococcus faecalis is frequently recovered from root-filled teeth with refractory apical periodontitis. The ability of E. faecalis to form a matrix-encased biofilm contributes to its pathogenicity; however, the role of extracellular dextran and DNA in biofilm formation and its effect on the susceptibili...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.04.007
更新日期：2012-07-01 00:00:00
abstract：:Pulp regeneration and its clinical translation into regenerative endodontic procedures are receiving increasing research attention, leading to significant growth of the published scientific and clinical literature within these areas. Development of research strategies, which consider patient-, clinician-, and scientis...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2017.06.002
更新日期：2017-09-01 00:00:00
abstract：:Root canal bacteria in teeth with apical periodontitis were enumerated after extraction and incubation. Canals in 36 teeth were sampled after: S1, incubation for 2 hours (group A), 2 days (group B), 4 days (group C), and 6 days (group D); S2, subsequent incubation for 1 week; S3, canal disinfection; and S4, final incu...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2008.08.038
更新日期：2008-12-01 00:00:00
abstract：:The aim of this laboratory based study was to determine the shaping ability of Lightspeed nickel-titanium rotary instruments in simulated root canals. A total of 40 canals with four different shapes in terms of angle and position of curve were prepared with Lightspeed instruments using the stepback technique recommend...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(97)80347-0
更新日期：1997-12-01 00:00:00
abstract：:Propolis, a flavonoid-rich product of honey comb, exhibits antibacterial and anti-inflammatory properties. In this study, we examined the tolerance of fibroblasts of the periodontal ligament (PDL) and dental pulp to propolis and compared with that of calcium hydroxide in vitro. Cells from human dental pulp and PDL wer...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200405000-00012
更新日期：2004-05-01 00:00:00
abstract：INTRODUCTION:The purpose of this study was to examine the size, volume, and other parameters of preoperative periapical lesions measured from cone-beam computed tomographic (CBCT) images as potential prognostic factors in endodontic microsurgery. METHODS:A clinical database was searched for patients who had received e...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.05.006
更新日期：2016-08-01 00:00:00
abstract：:This case report describes an innovative virtual simulation method using a computer-aided rapid prototyping (CARP) model and a computer-aided design (CAD) program for autotransplantation of an immature third molar.A compromised left mandibular second molar (#18) was extracted and replaced by autotransplantation using ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2018.08.010
更新日期：2018-12-01 00:00:00
abstract：INTRODUCTION:Culture-independent studies have revealed a broad spectrum of oral bacterial taxa that may be associated with disease. This study investigated the prevalence of three new candidate oral pathogens: Prevotella baroniae, Prevotella multisaccharivorax, and as-yet-uncultivated Bacteroidetes oral clone X083 in p...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2009.05.033
更新日期：2009-10-01 00:00:00
abstract：:One hundred single-rooted teeth were instrumented with Lightspeed, Profile .04 Taper Series 29, and NT McXIM instruments according to the recommendations of the manufacturers, and Flex-R files using the balanced force technique. Groups were comparable with respect to average curvature, canal length, and major and mino...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(98)80086-1
更新日期：1998-02-01 00:00:00
abstract：:Cyclooxygenase-2 (COX-2) is induced after the activation of cells by a variety of proinflammatory agents. Recently, evidence has shown that COX-2 may play a role in the pathogenesis of pulpal inflammation. However, little is known regarding the mechanism of pulpal inflammation at the site of bacterial infection. The p...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200304000-00002
更新日期：2003-04-01 00:00:00
abstract：:The sealing ability of copal varnish has been investigated when used as an adjunct in restorative procedures, retrofilling procedures, and dontic obturation procedures. Barrier, a polyamide-type polymer cavity varnish, has been compared with copal varnishes in restorative dentistry. This investigation compared the api...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)81138-6
更新日期：1992-01-01 00:00:00
abstract：INTRODUCTION:This study tested whether heat stress (42 degrees C for 30 minutes) induces reactive oxygen species (ROS), proinflammatory cytokines, Nrf2 activation, and Nrf2 target genes such as antioxidant enzymes in human dental pulp (HDP) cells. METHODS:ROS was evaluated by using flow cytometry. Proteins and messeng...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2009.06.005
更新日期：2009-09-01 00:00:00
abstract：:Porphyromonas endodontalis (formerly Bacteroides endodontalis) is a black-pigmented anaerobic Gram-negative rod which is associated with endodontal infections. It has been isolated from infected dental root canals and submucous abscesses of endodontal origin. The presence of P. endodontalis in infected dental root can...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/s0099-2399(06)80843-5
更新日期：1992-09-01 00:00:00
abstract：:The aim of this study was to investigate the correlation between endodontic clinical signs and symptoms and the presence of Porphyromonas gingivalis, Treponema denticola, and Tannerella forsythia or their association by nested polymerase chain reaction assay. Microbial samples were taken from 50 cases with necrotic pu...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2007.05.017
更新日期：2007-09-01 00:00:00
abstract：:Silicone tubes filled with CRCS, a calcium hydroxide-based cement, were implanted at two different localizations in the right tibias of white male Wistar rats. A similar number of solid silicone rods were implanted in the left tibias of the same animals and were used as inert controls. Fifteen days after implantation ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(89)80090-1
更新日期：1989-01-01 00:00:00
abstract：:In this retrospective study with limited cone-beam computed tomography (limited CBCT), we investigated the anatomic characteristics of the accessory mental foramina and accessory branches of the mandibular canal. The CBCT records of approximately 150 patients were evaluated, and 17 accessory mental foramina were found...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2008.08.033
更新日期：2008-12-01 00:00:00
abstract：INTRODUCTION:An accurate differential diagnosis of apical periodontitis (AP) and nasopalatine duct cyst (NPDC) should be established to define the best treatment for endodontically treated maxillary anterior teeth with apical periodontitis. Three-dimensional cone beam computed tomography (CBCT) images help to plan trea...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2010.11.022
更新日期：2011-03-01 00:00:00
abstract：:In the present study, we used Fos expression as an index of nociceptive input to the spinal trigeminal nucleus after exposure of the coronal pulp tissue of maxillary right first molars and examined the effects of pretreatment with an opioid, a nonsteroidal anti-inflammatory drug or a local anesthetic before pulp expos...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/01.don.0000153844.61709.64
更新日期：2005-08-01 00:00:00
abstract：:This study was conducted to evaluate the influence of immediate versus delayed immersion time, and passive dye immersion versus centrifuged dye on apical leakage measurements. Eighty-four extracted human teeth with single straight canals were instrumented and divided into four experimental groups of 20 teeth each plus...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)81364-6
更新日期：1993-07-01 00:00:00
abstract：INTRODUCTION:The aim of this study was to investigate the potential of autologous mesenchymal bone marrow stem cells (BMSCs) to promote hard-tissue formation after direct pulp capping procedures. MATERIALS AND METHODS:Bone marrow was aspirated from the iliac crest of healthy dogs of nonspecific race. Mononuclear cells...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.12.012
更新日期：2013-05-01 00:00:00
abstract：INTRODUCTION:Dentin regeneration could be an ideal treatment option to restore tissue function. This study was conducted to evaluate the ability of dental pulp stem cells (DPSCs) and dentin matrix protein 1 (DMP1) impregnated within a collagen scaffold to regenerate dentin. METHODS:Simulated perforations were created ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2011.05.019
更新日期：2011-08-01 00:00:00
abstract：:The aim of this study was to investigate the extent of calcium ion (Ca(2+)) removal on root dentin after treatment with 1.25% NaOCl, 2.5% NaOCl, 5.25% NaOCl, 2% chlorhexidine (CHX), 2% iodine potassium iodide (IKI), and MTAD in 3 immersion time periods. Extracted human mandibular premolars were bisected longitudinally...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2008.11.016
更新日期：2009-02-01 00:00:00
abstract：INTRODUCTION:The purpose of this study was to combine multiple displacement amplification and checkerboard DNA-DNA hybridization to qualitatively and quantitatively evaluate the microbiota present in infections refractory to endodontic treatment. METHODS:The subjects of this study were 40 patients presenting with peri...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.05.014
更新日期：2016-08-01 00:00:00
abstract：:Apical periodontitis and its concomitant periapical osteolysis is caused by pulpal infection, and bacterial lipopolysaccharide (LPS) is known to play a major role in the bone resorption process. Little is known concerning the effect of root canal intervisit dressings on residual LPS in root canals after bacterial cell...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)81199-4
更新日期：1993-02-01 00:00:00
abstract：INTRODUCTION:A vertical root fracture (VRF), commonly found in teeth with endodontic treatment, is challenging to diagnose and has poor treatment outcomes. Cone-beam computed tomography (CBCT) has become an increasingly popular imaging modality in endodontics, but image artifacts arising from root-filling materials may...
journal_title：Journal of endodontics
pub_type： 杂志文章,评审
doi：10.1016/j.joen.2015.10.005
更新日期：2016-02-01 00:00:00
abstract：INTRODUCTION:MicroRNAs (miRs) are a family of noncoding RNAs that regulate gene expression. They are ubiquitous among multicellular eukaryotes and are also encoded by some viruses. Upon infection, viral miRs (vmiRs) can potentially target gene expression in the host and alter the immune response. Although prior studies...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.10.006
更新日期：2017-01-01 00:00:00
abstract：INTRODUCTION:Porphyromonas gingivalis and Tannerella forsythia are anaerobic bacteria commonly involved in root canal infections. Although previous investigations have assessed these species by strictly qualitative approaches, accurate determination of their cell levels by a sensitive quantitative technique may contrib...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2009.08.005
更新日期：2009-11-01 00:00:00
