Procedural accidents: an online study guide.

abstract：INTRODUCTION:The purpose of this in-depth investigation was to identify, clarify, and substantiate clinical terminology relative to apical/periapical/periradicular diagnostic states, which is used routinely in the provision of endodontic care. Furthermore, the information gleaned from this investigation was used to lin...

journal_title：Journal of endodontics

authors： Gutmann JL,Baumgartner JC,Gluskin AH,Hartwell GR,Walton RE

更新日期：2009-12-01 00:00:00

abstract：:Occurrence of apical transportation (AT) may complicate the root filling procedure and result in a compromised seal. In part I of this study, human mandibular premolars with single, curved (21 to 39 degrees), or straight canals were prepared by Lightspeed or a step-back hand filing technique. An AT index was determine...

journal_title：Journal of endodontics

authors： Wu MK,Fan B,Wesselink PR

更新日期：2000-04-01 00:00:00

abstract：:The purpose of this study was to evaluate the influence of Hero 642 rotary Ni-Ti instruments driven at 300, 400, or 600 rpm on root canal straightening, loss of working length, and instrument breakage. Sixty mesial root canals from extracted human mandibular molars were divided into 3 groups of 20 each and were instru...

journal_title：Journal of endodontics

authors： Karagöz-Küçükay I,Ersev H,Engin-Akkoca E,Küçükay S,Gürsoy T

更新日期：2003-07-01 00:00:00

abstract：:This study attempts to evaluate the oral manifestations of and the limited available dental pulp information on diabetes mellitus, a common metabolic disorder of carbohydrate and lipid metabolism affecting over 16 million Americans. Diabetics are particularly prone to bacterial or opportunistic infections. This vulner...

journal_title：Journal of endodontics

authors： Bender IB,Bender AB

更新日期：2003-06-01 00:00:00

abstract：:This review considers oral trauma and its relationship to orthodontics with respect to prevention and primary, secondary, and tertiary care. The level of evidence is not high in regard to this topic, but recommendable approaches to trauma at each stage are discussed on the basis of available literature and published g...

journal_title：Journal of endodontics

authors： Fields HW,Christensen JR

更新日期：2013-03-01 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：: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：:Immunopathologic reactions play a significant role in inflammatory diseases of dental pulp. Interleukin-1beta (IL-1beta) is recognized as a key player in mediating cellular immune response. In this study, we measured the content of IL-1beta and its effect on collagen synthesis in cultures of fibroblasts derived from h...

journal_title：Journal of endodontics

authors： Barkhordar RA,Ghani QP,Russell TR,Hussain MZ

更新日期：2002-03-01 00:00:00

abstract：INTRODUCTION:The direct effect of follicle-stimulating hormone (FSH) on bone resorption has been demonstrated recently. The aim of this study was to evaluate the effect of FSH inhibitor leuprorelin (LE) on alveolar bone loss resulting from experimental periapical lesions in ovariectomized (OVX) rats. METHODS:Twenty-se...

journal_title：Journal of endodontics

authors： Liu S,Cheng Y,Xu W,Bian Z

更新日期：2010-04-01 00:00:00

abstract：:Retrograde (or apical/periapical) peri-implantitis (RPI) presents with radiographic signs of bone loss at the periapical area of endosteal implants and may also present with clinical signs of abscess formation or a sinus tract traceable to the implant periapex. The lesion may form days up to several years after the in...

journal_title：Journal of endodontics

authors： Sarmast ND,Wang HH,Sajadi AS,Munne AM,Angelov N

更新日期：2019-05-01 00:00:00

abstract：INTRODUCTION:Previous studies in patients with irreversible pulpitis have reported increased success of the inferior alveolar nerve block (IANB) using premedication with ketorolac. Preemptive nitrous oxide administration has also shown an increase in the success of the IANB. Recently, ketorolac has been made available ...

journal_title：Journal of endodontics

authors： Stentz D,Drum M,Reader A,Nusstein J,Fowler S,Beck M

更新日期：2018-01-01 00:00:00

abstract：:The effects of parathyroid hormone (PTH), 1,25-dihydroxyvitamin D3, and prostaglandin E2 (PGE2) on alkaline phosphatase activity on cultured dental pulp and gingiva cells of bovine calf were compared. In pulp cells, PTH, 1,25-dihydroxyvitamin D3, and PGE2 significantly increased alkaline phosphatase activity, but no i...

journal_title：Journal of endodontics

authors： Kido J,Ishida H,Nagata T,Hamasaki A,Nishikawa S,Wakano Y

更新日期：1991-04-01 00:00:00

abstract：INTRODUCTION:Cell migration is an important step in pulpal wound healing. Although components in the resin-based dental materials are known to have adverse effects on pulp wound healing including proliferation and mineralization, their effects on cell migration have been scarcely examined. Here, we investigated the eff...

journal_title：Journal of endodontics

authors： Williams DW,Wu H,Oh JE,Fakhar C,Kang MK,Shin KH,Park NH,Kim RH

更新日期：2013-09-01 00:00:00

abstract：:One hundred randomly selected mandibular incisors were examined to assess the prevalence and location of two canals and to describe the canal anatomy that may be encountered during apical surgery. Sections of the root were cut at 1, 2, and 3 mm from the apex, simulating a 20-degree beveled surgical resection. The sect...

journal_title：Journal of endodontics

authors： Mauger MJ,Schindler WG,Walker WA 3rd

更新日期：1998-09-01 00:00:00

abstract：INTRODUCTION:The aim of this study was to assess, by scanning electron microscopic (SEM) analysis, the ability of 17% EDTA and 7% maleic acid in the removal of the smear layer from the human root canal system. METHODS:Eighty single-rooted human anterior teeth were subjected to standardized root canal instrumentation (...

journal_title：Journal of endodontics

authors： Ballal NV,Kandian S,Mala K,Bhat KS,Acharya S

更新日期：2009-11-01 00:00:00

abstract：INTRODUCTION:The aim of this study was to investigate the role of the extracellular signal-regulated kinase 1/2 (ERK1/2) pathway in regulating tricalcium silicate (C3S)-driven proliferation and biomineralization of human dental pulp cells (hDPCs) in vitro. METHODS:Human DPCs were cultured in C3S-containing medium and ...

journal_title：Journal of endodontics

authors： Du R,Wu T,Liu W,Li L,Jiang L,Peng W,Chang J,Zhu Y

更新日期：2013-08-01 00:00:00

abstract：INTRODUCTION:This 2-part study hypothesized that a bioactive scaffold containing a sustained transforming growth factor (TGF)-β1-releasing nanoparticle system will promote migration and enhance differentiation of stem cells from the apical papilla (SCAP). The study aimed to develop and characterize a novel modified chi...

journal_title：Journal of endodontics

authors： Bellamy C,Shrestha S,Torneck C,Kishen A

更新日期：2016-09-01 00:00:00

abstract：:The purpose of this study was to determine the influence of operator experience on the ability to locate and fill extra canals in maxillary first and second molars in vivo. The number of canals located and filled from maxillary first and second molars was recorded from three endodontic residents during the first 6 mon...

journal_title：Journal of endodontics

authors： Corcoran J,Apicella MJ,Mines P

更新日期：2007-01-01 00:00:00

abstract：INTRODUCTION:Irrigation dynamics and antibacterial activity determine the efficacy of root canal disinfection. Sonic or ultrasonic agitation of irrigants is expected to improve irrigation dynamics. This study examined the effects of microbubble emulsion (ME) combined with sonic or ultrasonic agitation on irrigation dyn...

journal_title：Journal of endodontics

authors： Halford A,Ohl CD,Azarpazhooh A,Basrani B,Friedman S,Kishen A

更新日期：2012-11-01 00:00:00

abstract：INTRODUCTION:Information on the nerve fibers innervating the dental pulp is crucial for understanding dental pain and hypersensitivity. This study investigated the morphologic differences of parvalbumin (PV)-positive (+) myelinated fibers in 3 different regions of the human dental pulp. METHODS:Light and electron micr...

journal_title：Journal of endodontics

authors： Kim TH,Park SK,Choi SY,Lee JS,Bae YC

更新日期：2017-06-01 00:00:00

abstract：:Advanced glycation end products (AGEs) have been found to play a role in inflammation and vascular complications. The receptor for AGE (RAGE) is expressed on many cells and is up-regulated during inflammation. To date, RAGE expression or its correlation with nuclear factor kappa beta (NF-kappabeta) expression has not ...

journal_title：Journal of endodontics

authors： Crabtree M,Pileggi R,Bhattacharyya I,Caudle R,Perez F,Riley J,Vertucci F,Katz J

更新日期：2008-06-01 00:00:00

abstract：:Previous studies have indicated that vertical root fracture tends to occur in a buccolingual direction, where dentin thickness is greatest. Factors potentially influencing the location and direction of root fracture include root canal shape, external root morphology, and dentin thickness. In this finite-element study,...

journal_title：Journal of endodontics

authors： Lertchirakarn V,Palamara JE,Messer HH

更新日期：2003-08-01 00:00:00

abstract：INTRODUCTION:This study aimed to evaluate the frequency of dentinal microcracks observed after root canal preparation with 2 reciprocating and a conventional full-sequence rotary system using micro-computed tomographic analysis. METHODS:Thirty mesial roots of mandibular molars presenting a type II Vertucci canal confi...

journal_title：Journal of endodontics

authors： De-Deus G,Silva EJ,Marins J,Souza E,Neves Ade A,Gonçalves Belladonna F,Alves H,Lopes RT,Versiani MA

更新日期：2014-09-01 00:00:00

abstract：:This report presents an unusual indication for root resection of a lower molar tooth and also reviews the history of root resection. ...

journal_title：Journal of endodontics

authors： Johnston DJ,Cowan CG,Hussey DL

更新日期：2000-04-01 00:00:00

abstract：:This study evaluated the degree of conversion of one dual-cured resin cement when used to lute fiber posts with different translucencies. To measure the degree of conversion, polyvinylsiloxane molds were prepared to simulate root canals. The posts, Aestheti-Post or Light-Post, were cemented in these molds and, after p...

journal_title：Journal of endodontics

authors： Faria e Silva AL,Arias VG,Soares LE,Martin AA,Martins LR

更新日期：2007-03-01 00:00:00

abstract：:The aims of this study were to identify microorganisms on the surface of gutta-percha (GP) cones using a polymerase chain reaction (PCR) and to evaluate the sterilization effect of 5.25% sodium hypochlorite (NaOCl), 2% chlorhexidine (CHX), and ChloraPrep on these bacteria. Alterations of the surface texture and physic...

journal_title：Journal of endodontics

authors： Pang NS,Jung IY,Bae KS,Baek SH,Lee WC,Kum KY

更新日期：2007-05-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to compare centering ability and apical canal transportation of K-files (KF), ProGlider (PG), and G-Files (GF) after glide path enlargement in curved canals by using micro-computed tomography. METHODS:Thirty canals each were randomly assigned to KF, GF, and PG. Teeth were sca...

journal_title：Journal of endodontics

authors： Paleker F,van der Vyver PJ

更新日期：2016-07-01 00:00:00

abstract：:The purpose of this study was to investigate histologically and histometrically the changes in pulpal and periapical tissues after pulpal exposure in rats. All animals received a pulpal exposure in the left mandibular first molar. Animals were killed at 1 to 56 days after pulpal exposure, and their mandibles were eval...

journal_title：Journal of endodontics

authors： Yamasaki M,Kumazawa M,Kohsaka T,Nakamura H,Kameyama Y

更新日期：1994-01-01 00:00:00

abstract：:The aim of this in vivo study was to find a way to conduct qualitative and quantitative evaluations of radicular apical third apposition in rats. Twenty rats were injected intraperitoneally with tetracycline at weight-adjusted doses. Mesio-distal sections of the first mandibular molar regions were prepared. The 60 to ...

journal_title：Journal of endodontics

authors： Peli JF,Oriez D

更新日期：1999-04-01 00:00:00

abstract：:The aim of this study was to test the effect of different concentrations of sodium hypochlorite, chlorhexidine, and cetrimide on the following bacterial strains: Facultative aerobes-anaerobes: Candida albicans ATCC 10231; Enterococcus faecalis ATCC 29212; Escherichia coli ATCC 25,922; Pseudomonas aeruginosa ATCC 27,85...

journal_title：Journal of endodontics

authors： D'Arcangelo C,Varvara G,De Fazio P

更新日期：1999-05-01 00:00:00