abstract：INTRODUCTION:The aim of this study was to assess the effect of nitrogen ion implantation on the flexibility of rotary nickel-titanium (NiTi) instruments as measured by the load required to bend implanted and nonimplanted instruments at a 30° angle. METHODS:Thirty K3 files, size #40, 0.02 taper and 25-mm length, were a...

journal_title：Journal of endodontics

authors： dos Santos M,Gavini G,Siqueira EL,da Costa C

更新日期：2012-05-01 00:00:00

abstract：INTRODUCTION:The inferior alveolar nerve (IAN) block does not always result in successful pulpal anesthesia. Anesthetic success rates might be affected by increased anxiety. Nitrous oxide has been shown to have both anxiolytic and analgesic properties. Therefore, the purpose of this prospective, randomized, double-blin...

journal_title：Journal of endodontics

authors： Stanley W,Drum M,Nusstein J,Reader A,Beck M

更新日期：2012-05-01 00:00:00

abstract：INTRODUCTION:This study was done to evaluate the mechanism involved in stem cell factor (SCF) expression and production by lipopolysaccharide (LPS)-stimulated odontoblast (OD)-like cells and to investigate the signal transduction pathway activated in the process. METHODS:ODs-like cells (MDPC-23) were stimulated with d...

journal_title：Journal of endodontics

authors： Oliveira SH,Santos VA

更新日期：2012-05-01 00:00:00

abstract：INTRODUCTION:Lipopolysaccharide (LPS) has been shown to regulate the function of odontoblasts. However, the molecular mechanisms of the effect of LPS on odontoblasts are poorly understood. Decorin (DCN), one of the major matrix proteoglycans, is known to affect the mineralization of teeth. In this study, we investigate...

journal_title：Journal of endodontics

authors： He W,Qu T,Yu Q,Wang Z,Wang H,Zhang J,Smith AJ

更新日期：2012-04-01 00:00:00

abstract：INTRODUCTION:The study compared Twisted File (TF) with 3 traditionally manufactured systems to determine whether changes in the manufacturing process improved the cyclic fatigue resistance. METHODS:Four rotary file systems, (1) ProFile (PF), (2) Mtwo, (3) K3, and (4) TF, were tested in artificial canals with 45° and 9...

journal_title：Journal of endodontics

authors： Bhagabati N,Yadav S,Talwar S

更新日期：2012-04-01 00:00:00

abstract：INTRODUCTION:External apical root resorption (EARR) is a frequent iatrogenic effect of orthodontic treatment. The way root-filled teeth respond to orthodontic forces with respect to EARR has been reported as varying widely between individuals. Genetic variants in the interleukin-1 gene have been associated with an incr...

journal_title：Journal of endodontics

authors： Iglesias-Linares A,Yañez-Vico RM,Ortiz-Ariza E,Ballesta S,Mendoza-Mendoza A,Perea E,Solano-Reina E

更新日期：2012-03-01 00:00:00

abstract：INTRODUCTION:Matrix extracellular phosphoglycoprotein (MEPE), a new member of the small integrin binding ligand N-glycosylated (SIBLING) family, is believed to play multifunctional roles in regulation of cell signaling, mineral homeostasis, and mineralization. METHODS:To study how MEPE affects the downstream genes inv...

journal_title：Journal of endodontics

authors： Wei X,Liu L,Zhou X,Zhang F,Ling J

更新日期：2012-03-01 00:00:00

abstract：INTRODUCTION:The purpose of this in vitro study was to compare the cytotoxicity of white mineral trioxide aggregate cement (AMTA, MTA-Angelus), Brasseler Endosequence Root Repair Putty (ERRM), Dycal, and Ultra-blend Plus (UBP) by using human dermal fibroblasts and a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium ...

journal_title：Journal of endodontics

authors： Hirschman WR,Wheater MA,Bringas JS,Hoen MM

更新日期：2012-03-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to evaluate the influence of anorganic bovine bone as a grafted biomaterial on newly formed bone and cementum in periapical regions after surgical endodontic treatment in cats. METHODS:After inducing apical periodontitis in 9 cats, root canal and surgical endodontic treatment...

journal_title：Journal of endodontics

authors： Artzi Z,Wasersprung N,Weinreb M,Steigmann M,Prasad HS,Tsesis I

更新日期：2012-02-01 00:00:00

abstract：INTRODUCTION:This study aimed at evaluating the bond strength to root dentin of 2 mineral trioxide aggregate (MTA)-based sealers (Endo-CPM sealer and MTA Fillapex) and of 1 epoxy resin-based sealer (AH Plus sealer). METHODS:Forty-five extracted human teeth with single roots were prepared by using the step-back techniq...

journal_title：Journal of endodontics

authors： Assmann E,Scarparo RK,Böttcher DE,Grecca FS

更新日期：2012-02-01 00:00:00

abstract：INTRODUCTION:The purpose of the present study was to evaluate the thickness and the anatomic characteristics of the Schneiderian membrane and cortical bone using limited cone beam computed tomography (CBCT) scannning in patients referred for planning of apical surgery of maxillary molars. METHODS:This controlled study...

journal_title：Journal of endodontics

authors： Bornstein MM,Wasmer J,Sendi P,Janner SF,Buser D,von Arx T

更新日期：2012-01-01 00:00:00

abstract：INTRODUCTION:This study evaluated the influence of glide path on canal curvature and axis modification after instrumentation with WaveOne Primary reciprocating files. METHODS:Thirty ISO 15, 0.02 taper Endo Training Blocks were used. In group 1, glide path was created with PathFile 1, 2, and 3 at working length, wherea...

journal_title：Journal of endodontics

authors： Berutti E,Paolino DS,Chiandussi G,Alovisi M,Cantatore G,Castellucci A,Pasqualini D

更新日期：2012-01-01 00:00:00

abstract：INTRODUCTION:The study was designed as a randomized double-blind trial to evaluate the anesthetic efficacy of 4% articaine with 1:100,000 epinephrine in inferior alveolar nerve block (IANB) and infiltration anesthetic techniques to anesthetize mandibular molars with irreversible pulpitis. METHODS:The study was compose...

journal_title：Journal of endodontics

authors： Poorni S,Veniashok B,Senthilkumar AD,Indira R,Ramachandran S

更新日期：2011-12-01 00:00:00

abstract：INTRODUCTION:Failure in endodontic treatment is often caused by the persistence of microorganisms in the root canal after therapy. When treatment fails, an immune response develops that is characterized by an extensive network of immunologic mechanisms that lead to the production of cytokines and chemokines. METHODS:T...

journal_title：Journal of endodontics

authors： Henriques LC,de Brito LC,Tavares WL,Vieira LQ,Ribeiro Sobrinho AP

更新日期：2011-12-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to determine factors and clinical situations that influence an endodontist's decision to use guided tissue regeneration (GTR) techniques during endodontic root-end surgery. METHODS:An invitation to participate in a web-based survey was e-mailed to 3,750 members of the America...

journal_title：Journal of endodontics

authors： Naylor J,Mines P,Anderson A,Kwon D

更新日期：2011-11-01 00:00:00

abstract：INTRODUCTION:The efficacy of retreatment techniques for BC Sealer (BCS) (Brasseler USA, Savannah, GA) removal has not yet been assessed. The purpose of this study was to evaluate the efficacy of solvent and rotary instrumentation in the removal of BCS when used in combination with gutta-percha (GP) as compared with AH ...

journal_title：Journal of endodontics

authors： Hess D,Solomon E,Spears R,He J

更新日期：2011-11-01 00:00:00

abstract：INTRODUCTION:This study was conducted to evaluate and compare the fracture resistance of roots obturated with various contemporary canal-filling systems. METHODS:Fifty single-rooted extracted mandibular premolars were decoronated to obtain 13-mm root segments. Ten roots were left unprepared and unfilled (negative cont...

journal_title：Journal of endodontics

authors： Ghoneim AG,Lutfy RA,Sabet NE,Fayyad DM

更新日期：2011-11-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to compare the accuracy in vivo of 2 electronic apex locators (EALs), the Raypex 5 and the Mini Apex Locator. METHODS:The working length (WL) was determined electronically for 40 human root canals by using a K-file and 1 of the 2 EALs. The files were fixed at the WL, and the ...

journal_title：Journal of endodontics

authors： Stöber EK,de Ribot J,Mercadé M,Vera J,Bueno R,Roig M,Duran-Sindreu F

更新日期：2011-10-01 00:00:00

abstract：INTRODUCTION:The introduction of nickel-titanium (NiTi) files into clinical practice has improved the quality of canal shaping, but increasing the curvature of the root canal (or the diameter of the master instrument that prepares the full working length) could result in more transportation, straightening, and aberrati...

journal_title：Journal of endodontics

authors： Franco V,Fabiani C,Taschieri S,Malentacca A,Bortolin M,Del Fabbro M

更新日期：2011-10-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to visualize the stresses and strain distribution patterns in ProTaper Universal F2 files (Dentsply Maillefer, Ballaigues, Switzerland) and to establish the stress- and strain-curvature relationship for this instrument under various conditions by using a dynamic, three-dimensi...

journal_title：Journal of endodontics

authors： Gao Y,Cheung GS,Shen Y,Zhou X

更新日期：2011-10-01 00:00:00

abstract：INTRODUCTION:This study was to investigate the effects of tricalcium silicate (Ca(3)SiO(5)) on proliferation and odontogenic differentiation of human dental pulp cells (hDPCs) in vitro. METHODS:The hDPCs were seeded in culture medium with or without Ca(3)SiO(5) extract and calcium hydroxide (Ca(OH)(2)) extract. Prolif...

journal_title：Journal of endodontics

authors： Peng W,Liu W,Zhai W,Jiang L,Li L,Chang J,Zhu Y

更新日期：2011-09-01 00:00:00

abstract：INTRODUCTION:The aim of this study was to evaluate and compare the antimicrobial activity of calcium hydroxide, triantibiotic mixture (TAM), and an ethanol extract of propolis as intracanal medicaments on Enterococcus faecalis-infected root canals. METHODS:One hundred twenty extracted intact human permanent incisors w...

journal_title：Journal of endodontics

authors： Madhubala MM,Srinivasan N,Ahamed S

更新日期：2011-09-01 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

authors： Alsanea R,Ravindran S,Fayad MI,Johnson BR,Wenckus CS,Hao J,George A

更新日期：2011-08-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to compare the efficacy of the cutting ability of two different instruments, concerning changes in the dentin thickness removed and root canal volume, by using multislice computed tomography scanning. METHODS:Thirty single-rooted mandibular premolars were divided into two equ...

journal_title：Journal of endodontics

authors： Fayyad DM,Elhakim Elgendy AA

更新日期：2011-08-01 00:00:00

abstract：INTRODUCTION:Krüppel-like factor 4 (KLF4) plays an important role in cytodifferentiation and proliferation. Our previous study showed that KLF4 was specifically expressed in polarizing and elongating odontoblasts. However, the role of KLF4 in odontoblast differentiation was still unknown. The purpose of this study was ...

journal_title：Journal of endodontics

authors： Lin H,Xu L,Liu H,Sun Q,Chen Z,Yuan G,Chen Z

更新日期：2011-07-01 00:00:00

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

authors： Versiani MA,Pécora JD,de Sousa-Neto MD

更新日期：2011-07-01 00:00:00

abstract：INTRODUCTION:The radicular groove is clinically significant due to its relevance to onset of inflammatory processes in the periodontal tissues. This study examined anatomic features of radicular grooves by using micro-computed tomography (micro-CT) scans. METHODS:Eleven extracted permanent maxillary lateral incisors w...

journal_title：Journal of endodontics

authors： Gu YC

更新日期：2011-06-01 00:00:00

abstract：INTRODUCTION:During apicoectomy and retrograde cavity preparation, a smear layer, which contains microorganisms and necrotic pulpal tissues, is formed on the dentinal surfaces cut by the instruments. Bacteria can survive and proliferate inside or below the smear layer. The purpose of this study was to evaluate in vitro...

journal_title：Journal of endodontics

authors： Fabiani C,Franco V,Covello F,Brambilla E,Gagliani MM

更新日期：2011-06-01 00:00:00

abstract：INTRODUCTION:Many anatomical variations can occur within the mandibular first molar. Commonly, 3-4 canals are located, but as many as 6-7 canals have been reported. METHODS:This report describes a case of a mandibular first molar with 6 separate canals (3 mesial and 3 distal) that was instrumented with conventional ha...

journal_title：Journal of endodontics

authors： Ryan JL,Bowles WR,Baisden MK,McClanahan SB

更新日期：2011-06-01 00:00:00

abstract：INTRODUCTION:Squamous odontogenic tumor-like epithelial islands occurring in the walls of odontogenic cysts are histologically identical to the squamous odontogenic tumor (SOT). Microscopically, the squamous odontogenic tumor-like proliferations (SOTLPs) share certain histologic features with SOT, acanthomatous and des...

journal_title：Journal of endodontics

authors： Parmar RM,Brannon RB,Fowler CB

更新日期：2011-05-01 00:00:00

abstract：INTRODUCTION:The aim of this study was to investigate the effects of pretreatment of gel chlorhexidine and ethanol on the bond strength and durability of the adhesion of the fiber post relined with resin composite to the root dentin. METHODS:Sixty bovine incisor roots were divided into four groups: irrigation with phy...

journal_title：Journal of endodontics

authors： Cecchin D,de Almeida JF,Gomes BP,Zaia AA,Ferraz CC

更新日期：2011-05-01 00:00:00

abstract：INTRODUCTION:The purpose of this prospective, randomized, single-blind crossover study was to evaluate the anesthetic efficacy of a combination palatal and buccal infiltration of the maxillary first molar. MATERIALS AND METHODS:Using a crossover design, 40 subjects received two sets of maxillary first molar infiltrati...

journal_title：Journal of endodontics

authors： Guglielmo A,Drum M,Reader A,Nusstein J

更新日期：2011-04-01 00:00:00

abstract：INTRODUCTION:The aim of this study was to compare the sensitivity and specificity of cone-beam computed tomography (CBCT) scans and digital periapical radiographs (PR) in detecting strip and root perforations after root canal treatment in mandibular molars. METHODS:Forty-five curved mesial roots were endodontically pr...

journal_title：Journal of endodontics

authors： Shemesh H,Cristescu RC,Wesselink PR,Wu MK

更新日期：2011-04-01 00:00:00

abstract：INTRODUCTION:Revascularization is a valuable treatment in immature necrotic teeth that allows the continuation of root development. In this article we describe successful revascularization treatment of 2 necrotic immature first mandibular molars. METHODS:The clinical and radiographic examinations showed extensive coro...

journal_title：Journal of endodontics

authors： Nosrat A,Seifi A,Asgary S

更新日期：2011-04-01 00:00:00

abstract：INTRODUCTION:Resin-based dental materials contain various diluent monomers that can interfere with vascular function by causing vasodilation. In this study, we evaluated the vasoactive potential of hydroxyethyl methacrylate (HEMA) and triethylene glycol dimethacrylate (TEGDMA) and the possible mechanism of their vascul...

journal_title：Journal of endodontics

authors： Guven G,Seyrek M,Vural IM,Cehreli ZC,Yildiz O

更新日期：2011-03-01 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

authors： Faitaroni LA,Bueno MR,Carvalhosa AA,Mendonça EF,Estrela C

更新日期：2011-03-01 00:00:00

abstract：INTRODUCTION:The choice of single- versus multiple-visit root canal treatment for infected teeth is in dispute. The purpose of this systematic review was to compare the healing rate and post-obturation pain of single- versus multiple-visit root canal treatment for teeth with infected root canals. METHODS:An exhaustive...

journal_title：Journal of endodontics

authors： Su Y,Wang C,Ye L

更新日期：2011-02-01 00:00:00

abstract：:The purpose of this study was to investigate whether the inflammation of rat dental pulp induces the muscarinic acetylcholine receptor (mAChR) constitutive receptor activity. Pulpitis was induced with bacterial lipolysaccharide in rat incisors dental pulp. Saturation assay with [(3)H]-quinuclidinyl benzilate ([(3)H] Q...

journal_title：Journal of endodontics

authors： Sterin-Borda L,Orman B,De Couto Pita A,Borda E

更新日期：2011-02-01 00:00:00

abstract：INTRODUCTION:A number of factors affect the dimensional stability of a material. These factors include curing conditions, material solubility, leaching, and time. The aim of this study was to evaluate the restrained dimensional change in the vertical direction as a function of the ambient conditions, fluid uptake, solu...

journal_title：Journal of endodontics

authors： Camilleri J

更新日期：2011-02-01 00:00:00

abstract：INTRODUCTION:Long-term predictability of restored endodontically treated teeth is important for the decision of tooth retention versus extraction and implant placement. The purpose of this study was to validate the hypothesis that preoperative factors can predict the long-term prognosis of molars requiring endodontic a...

journal_title：Journal of endodontics

authors： Setzer FC,Boyer KR,Jeppson JR,Karabucak B,Kim S

更新日期：2011-01-01 00:00:00