Migration of a Streptococcus sanguis strain through the root dentinal tubules.

abstract：INTRODUCTION:The aim of the present study was to investigate the impact of ambient temperature on the life span of nickel-titanium (NiTi) files. METHODS:Cyclic fatigue testing of NiTi instruments was performed in a stainless steel artificial canal. During the experiment, 4 different temperatures (0°C, 20°C, 35°C, and ...

journal_title：Journal of endodontics

authors： Plotino G,Grande NM,Testarelli L,Gambarini G,Castagnola R,Rossetti A,Özyürek T,Cordaro M,Fortunato L

更新日期：2018-10-01 00:00:00

abstract：:The aim of this study was to evaluate the presence of bacterial biofilm on the external surface of the root apex in teeth with pulp necrosis, with and without radiographically visible periapical lesions, and in teeth with a vital pulp. Twenty-one teeth were extracted, eight with pulp necrosis and periapical lesions, e...

journal_title：Journal of endodontics

authors： Leonardo MR,Rossi MA,Silva LA,Ito IY,Bonifácio KC

更新日期：2002-12-01 00:00:00

abstract：INTRODUCTION:Dentin regeneration is one of the main goals of vital pulp treatment in which the biological properties of dental pulp cells (DPCs) need to be considered. In our previous study, we showed that EDTA could enhance the stromal cell-derived factor 1 alpha-induced migration of DPCs. The purpose of this study wa...

journal_title：Journal of endodontics

authors： Liu L,Leng S,Tang L,Lu Q,Xu W,Tan X,Huang D,Zhang L

更新日期：2020-12-20 00:00:00

abstract：:Sodium hypochlorite (NaOCl) has been recommended for irrigation during root canal preparation. This investigation used scanning electron microscopy to examine instrumented and uninstrumented surfaces in the middle third of root canals following the use of several concentrations of NaOCl (5.25%, 2.5%, 1.0%, and 0.5%). ...

journal_title：Journal of endodontics

authors： Baumgartner JC,Cuenin PR

更新日期：1992-12-01 00:00:00

abstract：:The cross-sectional configuration of seven files at coronal and apical levels were compared with diagrams presented by manufacturers. The presence of cutting edges was also examined. Ground-twisted (K-file, K-Reamer, and K-flex) and machined files (Flex-R, Unifile, S-file, and Hedstrom) were included in #10, #25, and ...

journal_title：Journal of endodontics

authors： D'Souza JE,Walton RE,Maixner D

更新日期：1995-12-01 00:00:00

abstract：INTRODUCTION:The goal of replantation after dental avulsion is to maintain the tooth in its socket. Presence of vital periodontal ligament cells on the root surface of the replanted tooth and the immunologic status of the patient are factors that protect against root resorption. It is known that dental constituents pla...

journal_title：Journal of endodontics

authors： Roskamp L,Silva Neto UX,Carneiro E,Fariniuk LF,Westphalen VP

更新日期：2017-01-01 00:00:00

abstract：:This study compared the effectiveness of four different techniques used for obturation of single rooted-teeth: lateral condensation, low-temperature gutta-percha (Ultrafil), vertical condensation of gutta-percha softened by means of three different laser devices (argon, CO2, and Nd:YAG), or composite resin photopolyme...

journal_title：Journal of endodontics

authors： Anić I,Matsumoto K

更新日期：1995-09-01 00:00:00

abstract：:Interactions between Enterococcus faecalis and other species found in root canal infections might be important for the development and persistence of periapical disease. The aim of this study was to investigate the coaggregation interactions between E. faecalis clinical isolates and species previously shown to survive...

journal_title：Journal of endodontics

authors： Johnson EM,Flannagan SE,Sedgley CM

更新日期：2006-10-01 00:00:00

abstract：INTRODUCTION:Mineral trioxide aggregate (MTA) and calcium silicate (CS) cements exhibit acceptable levels of cytocompatibility. The aim of the present study was to evaluate MTA and CS cement genotoxicity in a human osteosarcoma cell line (MG63). METHODS:A mitochondrial colorimetric assay was used to evaluate the MG63 ...

journal_title：Journal of endodontics

authors： Ding SJ,Kao CT,Chen CL,Shie MY,Huang TH

更新日期：2010-07-01 00:00:00

abstract：:The purpose of this study was to evaluate the integrity of resected root-end surfaces of extracted human teeth after using ultrasonic tips at low or high frequencies for root-end preparation. Thirty bilaterally matched pairs of single-rooted human teeth had root-end resections using a low-speed diamond saw and were ex...

journal_title：Journal of endodontics

authors： Layton CA,Marshall JG,Morgan LA,Baumgartner JC

更新日期：1996-04-01 00:00:00

abstract：INTRODUCTION:The aim of this study was to assess 2 cone-beam computed tomographic systems on the detection of artificially induced vertical root fractures (VRFs) and artifact intensity using birooted teeth restored with different intracanal materials. METHODS:The sample consisted of 20 extracted birooted premolars. Ro...

journal_title：Journal of endodontics

authors： Marinho Vieira LE,Diniz de Lima E,Peixoto LR,Oliveira Pinto MG,Sousa Melo SL,Oliveira ML,Rovaris Silva K,Bento PM,Pita de Melo D

更新日期：2020-02-01 00:00:00

abstract：INTRODUCTION:Complementary methods of anatomic diagnosis, including cone-beam computed tomographic (CBCT) imaging, may be useful in the diagnosis of mesiobuccal (MB) canals of maxillary molars. METHODS:Thirty-five maxillary first molars were subjected to ex vivo analysis and 4 CBCT protocols: i-CAT Classic (Imaging Sc...

journal_title：Journal of endodontics

authors： de Freitas JV,Baratto-Filho F,Coelho BS,Tomazinho FSF,Crozeta BM,de Sousa Neto MD,Gabardo MCL

更新日期：2017-05-01 00:00:00

abstract：:Locating the number and position of orifices on pulp-chamber floors can be difficult. This is especially true when the tooth being treated is heavily restored, malposed, or calcified. After evaluating 500 pulp chambers of extracted teeth, new laws for finding pulp chambers and root-canal orifices are proposed. The use...

journal_title：Journal of endodontics

authors： Krasner P,Rankow HJ

更新日期：2004-01-01 00:00:00

abstract：INTRODUCTION:The pulpal anesthetic success rates for an inferior alveolar nerve block (IANB) alone in patients presenting with symptomatic irreversible pulpitis are less than adequate. Nitrous oxide and clonidine have shown increases in IANB success when administered individually, but their success has not been evaluat...

journal_title：Journal of endodontics

authors： MacDonald E,Drum M,Nusstein J,Fowler S,Beck M,Reader A

更新日期：2020-12-30 00:00:00

abstract：INTRODUCTION:The anatomy of the maxillary C-shaped molar has been the subject of several case reports although no true prevalence research has ever been conducted. The aim of this observational study was to evaluate and characterize the incidence of these morphologies using cone-beam computed tomographic (CBCT) technol...

journal_title：Journal of endodontics

authors： Martins JN,Mata A,Marques D,Anderson C,Caramês J

更新日期：2016-03-01 00:00:00

abstract：:Coconut water is biologically pure and sterile, with a rich presence of amino acids, proteins, vitamins, and minerals. The purpose of this study was to use a collagenase-dispase assay to investigate the potential of a new storage medium, coconut water, in comparison with propolis, Hank's balanced salt solution (HBSS),...

journal_title：Journal of endodontics

authors： Gopikrishna V,Baweja PS,Venkateshbabu N,Thomas T,Kandaswamy D

更新日期：2008-05-01 00:00:00

abstract：INTRODUCTION:This study used micro-computed tomographic imaging to compare the shaping ability of Mtwo (VDW, Munich, Germany), a conventional nickel-titanium file system, and Reciproc (VDW), a reciprocating file system morphologically similar to Mtwo. METHODS:Root canal shaping was performed on the mesiobuccal and dis...

journal_title：Journal of endodontics

authors： Hwang YH,Bae KS,Baek SH,Kum KY,Lee W,Shon WJ,Chang SW

更新日期：2014-08-01 00:00:00

abstract：:Dentinal chips and different biocompatible materials have been used in the past as apical plugs to enhance healing and simplify obturation. The purpose of this study was to evaluate bone reactions to implants of hydroxyapatite, collagen, and calcium hydroxide, alone or in different combinations. The materials were imp...

journal_title：Journal of endodontics

authors： Pissiotis E,Spangberg LS

更新日期：1990-10-01 00:00:00

abstract：:The purpose of this investigation was to compare the antimicrobial effect of MTAD (a mixture of a tetracycline isomer, an acid, and a detergent) with that of NaOCl with and without EDTA. Eighty-five extracted human teeth were contaminated with Enterococcus faecalis for 4 weeks. After biomechanical instrumentation usin...

journal_title：Journal of endodontics

authors： Shabahang S,Torabinejad M

更新日期：2003-09-01 00:00:00

abstract：:Gutta-percha (GP) has been the most widely used root canal filling material because of its well-known low toxicity. The inertness of GP, however, was challenged recently. The purpose of this study was to evaluate the toxicity of marketed endodontic GP using the radiochromium release test. Fourteen commercially availab...

journal_title：Journal of endodontics

authors： Pascon EA,Spångberg LS

更新日期：1990-09-01 00:00:00

abstract：INTRODUCTION:The effect of endodontic involvement on tooth loss has not been quantified, so the present study aimed to assess this relationship after controlling for other relevant risk factors for tooth loss. METHODS:We analyzed data from 791 participants (18,798 teeth) in the Veterans Affairs Dental Longitudinal Stu...

journal_title：Journal of endodontics

authors： Zhong Y,Garcia R,Kaye EK,Cai J,Kaufman JS,Trope M,Wilcosky T,Caplan DJ

更新日期：2010-12-01 00:00:00

abstract：:Immune and nervous systems play key roles in periapical pathosis; however, their spatial associations, which may be a prerequisite for paracrine interactions in the progression of periapical lesions, remain to be examined. In this study we examined the distribution and frequency of spatial associations between major h...

journal_title：Journal of endodontics

authors： Yang G,Kawashima N,Kaneko T,Suzuki N,Okiji T,Suda H

更新日期：2007-02-01 00:00:00

abstract：INTRODUCTION:The aim of this study was to perform a descriptive analysis of the occurrence of external cervical resorption (ECR) in relation to the patients' characteristics (sex, age, and tooth type) and the potentially involved predisposing factors. METHODS:This study includes data on 284 patients (337 teeth with ev...

journal_title：Journal of endodontics

authors： Mavridou AM,Bergmans L,Barendregt D,Lambrechts P

更新日期：2017-10-01 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

authors： Kim D,Ku H,Nam T,Yoon TC,Lee CY,Kim E

更新日期：2016-08-01 00:00:00

abstract：INTRODUCTION:The lysyl oxidase (LOX) family is an emerging family of amine oxidases responsible for the formation of collagen fibrils in the extracellular matrix. To date, 5 LOX family genes have been identified in humans, encoding LOX and LOX-like proteins (LOXL, LOXL2, LOXL3, and LOXL4). The goal of this study was to...

journal_title：Journal of endodontics

authors： Kim EC,Lee HJ,Kim Y

更新日期：2012-06-01 00:00:00

abstract：:The antimicrobial effect of RC-Prep and its components--10% urea peroxide, 15% EDTA, and glycol--were evaluated individually, in vitro, within dentinal tubules. Standardized bovine incisor root specimens that had been infected with either Staphylococcus aureus or Streptococcus peltzer were incubated with each agent fo...

journal_title：Journal of endodontics

authors： Heling I,Irani E,Karni S,Steinberg D

更新日期：1999-12-01 00:00:00

abstract：INTRODUCTION:Optical coherence tomography (OCT) is a noninvasive modality to obtain in-depth images of biological structures. A dental OCT system has become available for chairside application. This in vitro study hypothesized that swept-source OCT can be used to measure the remaining dentin thickness (RDT) at the roof...

journal_title：Journal of endodontics

authors： Majkut P,Sadr A,Shimada Y,Sumi Y,Tagami J

更新日期：2015-08-01 00:00:00

abstract：:This report examines three clinical cases of root-filled teeth with primary endodontic lesions. During endodontic surgery, an area of incomplete root bifurcation beginning in the coronal or middle third of the root surface and terminating at or near the apical foramen were observed. The radicular grooves of two teeth ...

journal_title：Journal of endodontics

authors： Simon JH,Dogan H,Ceresa LM,Silver GK

更新日期：2000-05-01 00:00:00

abstract：:The aim of this review was to consider laboratory experiments and clinical studies of calcium hydroxide-based root canal sealers. An extensive search of the endodontic literature was made to identify publications related to calcium hydroxide-based root canal sealers. The articles were assessed for the outcome of labor...

journal_title：Journal of endodontics

authors： Desai S,Chandler N

更新日期：2009-04-01 00:00:00

abstract：:This study compared apical transportation produced in curved (45- to 60-degree) molar canals instrumented with two MM-3000 Sonic Air test files (Rispi-Sonic and Trio-Sonic) with apical transportation from instrumentation with conventional K-type files. Seventy-five extracted human permanent mandibular molars were equa...

journal_title：Journal of endodontics

authors： Ehrlich AD,Boyer TJ,Hicks ML,Pelleu GB Jr

更新日期：1989-05-01 00:00:00