A method to determine the location and shape of an intracoronal bleach barrier.

abstract：:Taurodontism is a morphoanatomical change in the shape of a tooth, which usually occurs in multirooted teeth. An enlarged body and pulp chamber, as well as apical displacement of the pulpal floor, are characteristic features. Endodontic treatment of a taurodont tooth is challenging, because it requires special care in...

journal_title：Journal of endodontics

authors： Tsesis I,Shifman A,Kaufman AY

更新日期：2003-05-01 00:00:00

abstract：:The purpose of this study was to compare the degree of anesthesia obtained with 2% lidocaine with three different concentrations of epinephrine for inferior alveolar nerve block. Using a repeated measures design, 30 subjects randomly received an inferior alveolar injection using masked cartridges of each solution at t...

journal_title：Journal of endodontics

authors： Dagher FB,Yared GM,Machtou P

更新日期：1997-03-01 00:00:00

abstract：:The effect of two different root canal cements and removal of the smear layer on the apical seal in roots obturated with Thermafil obturators was tested. Thirty extracted human mandibular first molars with 60 canals (mesial roots) were instrumented with the use of a step-back technique. Teeth were placed into 6 groups...

journal_title：Journal of endodontics

authors： Timpawat S,Sripanaratanakul S

更新日期：1998-05-01 00:00:00

abstract：:Microbial control--fundamental to healing of apical periodontitis--is central to endodontic practice. The effectiveness of antibacterial measures is generally monitored (in clinical research studies) by microbiological root canal sampling (MRS), which is often used as a predictor for healing. This article addresses th...

journal_title：Journal of endodontics

authors： Sathorn C,Parashos P,Messer HH

更新日期：2007-03-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to evaluate the antimicrobial effects of root canal sealers on Enterococcus faecalis biofilms in dentinal tubules by using a novel dentin infection model. METHODS:Cells of E. faecalis were introduced into the dentinal tubules by centrifugation and incubated in brain-heart inf...

journal_title：Journal of endodontics

authors： Wang Z,Shen Y,Haapasalo M

更新日期：2014-04-01 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：:In the human dental pulp of five healthy premolars, we detected the presence of vesicles in the cytoplasm of macrophage-like cells. There were, in general, two types of vesicles, with regard to their size and content. The first was of smaller size (35 to 55 nm), and they were electron optically empty. The second type ...

journal_title：Journal of endodontics

authors： Manthos A,Lyroudia K,Economou L

更新日期：1998-03-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to evaluate the effect of various degrees of cyclic fatigue on torsional failure and torsional preloading on the cyclic fatigue life of heat-treated K3XF nickel-titanium (NiTi) instruments (SybronEndo, Orange, CA). METHODS:The mean number of cycles until failure (Nf) of K3XF ...

journal_title：Journal of endodontics

authors： Shen Y,Riyahi AM,Campbell L,Zhou H,Du T,Wang Z,Qian W,Haapasalo M

更新日期：2015-04-01 00:00:00

abstract：:The cytotoxicity against two mesenchymal cell lines, L-929 and WI-38, and two epithelial cell lines, KB and HeLa S-3, of lipopolysaccharide (LPS) purified from strains of Bacteroides gingivalis, Fusobacterium nucleatum, and Veillonella parvula isolated from infected root canals was investigated. The inhibition of cell...

journal_title：Journal of endodontics

authors： Horiba N,Maekawa Y,Abe Y,Ito M,Matsumoto T,Nakamura H,Ozeki M

更新日期：1989-11-01 00:00:00

abstract：INTRODUCTION:Magnetic resonance imaging (MRI) has the potential to aid in determining the presence and extent of cracks/fractures in teeth because of better contrast without ionizing radiation. The objectives were to develop MRI criteria for root crack/fracture identification and to establish reliability and accuracy i...

journal_title：Journal of endodontics

authors： Schuurmans TJ,Nixdorf DR,Idiyatullin DS,Law AS,Barsness BD,Roach SH,Gaalaas L

更新日期：2019-06-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to examine the effect of mineral trioxide aggregate (MTA) on pluripotent-mesenchymal cell differentiation. METHODS:The pluripotent-mesenchymal cell line C2C12 was cultured in a 5% serum medium to induce cell differentiation with or without MTA. The differentiation to myoblast...

journal_title：Journal of endodontics

authors： Matsumoto S,Hayashi M,Suzuki Y,Suzuki N,Maeno M,Ogiso B

更新日期：2013-01-01 00:00:00

abstract：:The purpose of this study was to evaluate the bleaching effect of sodium percarbonate on artificially stained pulpless teeth. Twenty extracted human mandibular premolars were stained by immersing them in human blood mixed with iron sulfide, and divided into three test groups and one control group. The following bleach...

journal_title：Journal of endodontics

authors： Kaneko J,Inoue S,Kawakami S,Sano H

更新日期：2000-01-01 00:00:00

abstract：:This study compared the microshear bond strength of three resin-based sealers to root dentin and assessed whether sealer cements behave differently in thin and thick films. Extracted maxillary premolars were sectioned buccolingually, and 45 root halves were randomly allocated for microshear bond testing with the three...

journal_title：Journal of endodontics

authors： Rahimi M,Jainaen A,Parashos P,Messer HH

更新日期：2009-01-01 00:00:00

abstract：:Cells expressing interleukin-1 (IL-1) were examined in rat periapical lesions using immunohistochemical methods. During the acute phase, both IL-1 alpha- and IL-1 beta-expressing cells were observed adjacent to many osteoclasts that contained large cytoplasms, and consequently the periapical lesions tended to expand. ...

journal_title：Journal of endodontics

authors： Matsumoto A,Anan H,Maeda K

更新日期：1998-12-01 00:00:00

abstract：INTRODUCTION:Platelet-rich plasma (PRP) has been widely used in regenerative dentistry for over 2 decades. Nevertheless, previous studies have shown that its growth factor content is released over a short time period, and the application of anticoagulants limits its regenerative potential. Therefore, a second-generatio...

journal_title：Journal of endodontics

authors： Chai J,Jin R,Yuan G,Kanter V,Miron RJ,Zhang Y

更新日期：2019-08-01 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: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:Two groups of patients with orofacial pains that are clinically important to distinguish from each other are patients with odontogenic pain and temporomandibular disorder (TMD) pain. The aim of this study was to determine the sensitivity and specificity of 2 screening instruments in distinguishing between ...

journal_title：Journal of endodontics

authors： Fonseca Alonso B,Nixdorf DR,Shueb SS,John MT,Law AS,Durham J

更新日期：2017-01-01 00:00:00

abstract：INTRODUCTION:This study evaluated the success rate of and tooth substance removal required for computer-guided preparation of endodontic access cavities. METHODS:Thirty acrylic typodont teeth with root canals (10 each of tooth numbers 11, 14, and 17) were randomly allocated to a study or control group (15 teeth per gr...

journal_title：Journal of endodontics

authors： Kostunov J,Rammelsberg P,Klotz AL,Zenthöfer A,Schwindling FS

更新日期：2021-02-01 00:00:00

abstract：:Extracanal invasive resorption is not a well-defined phenomenon. This article describes its clinical, radiographic, and histological characteristics. Treatment of affected teeth based on the location of the resorptive defect is also described. ...

journal_title：Journal of endodontics

authors： Frank AL,Torabinejad M

更新日期：1998-07-01 00:00:00

abstract：INTRODUCTION:The aim of this study was to compare the efficacy of conventional syringe, ultrasonic, EndoVac (Discus Dental, Culver City, CA), and Self-Adjusting File (SAF) (Re-Dent-Nova, Ra'nana, Israel) irrigation systems in removing calcium hydroxide (Ca[OH]2) from simulated root canal irregularities. METHODS:The ro...

journal_title：Journal of endodontics

authors： Capar ID,Ozcan E,Arslan H,Ertas H,Aydinbelge HA

更新日期：2014-03-01 00:00:00

abstract：:Cytotoxicity was compared between new root canal sealers (New A, New B, and New B-2) and conventional root canal sealers (AH26, Diaket, Canals, Tubi-Seal, and Sealapex). Dental pulp cells of rats, obtained through primary cell culture, were used. In the experiments with the freshly prepared sealers, the incorporation ...

journal_title：Journal of endodontics

authors： Matsumoto K,Inoue K,Matsumoto A

更新日期：1989-02-01 00:00:00

abstract：INTRODUCTION:The purpose of this prospective, randomized controlled trial was to evaluate the healing outcomes of platelet-rich fibrin (PRF) in periapical surgeries involving apicomarginal defects and to compare these results with surgeries not using any guided tissue regeneration techniques. METHODS:Thirty patients w...

journal_title：Journal of endodontics

authors： Dhiman M,Kumar S,Duhan J,Sangwan P,Tewari S

更新日期：2015-07-01 00:00:00

abstract：:Many root canal instruments with several different designs have been introduced during recent years. This article evaluates the machining properties of four such instruments: the Flex-R, K-Flex, Trio-Cut, and S file. There are large variations in the machining properties of these instruments. The results are comparabl...

journal_title：Journal of endodontics

authors： Stenman E,Spångberg LS

更新日期：1990-12-01 00:00:00

abstract：:The mesiobuccal roots of 50 randomly selected maxillary first molars were examined to assess the incidence and position of the canal isthmus. Transverse serial sections of the apical 6 mm of each root were prepared in 1-mm increments. The apical side of each section was stained with methylene blue dye, viewed with a s...

journal_title：Journal of endodontics

authors： Weller RN,Niemczyk SP,Kim S

更新日期：1995-07-01 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：:The purpose of this study was to develop a method for lidocaine detection in dental pulp by high-performance liquid chromatography. The amounts of lidocaine in dog pulps were quantitated after local injection to evaluate lidocaine recovery from pulp tissue with this technique. Comparison was also made between the amou...

journal_title：Journal of endodontics

authors： Kanjanawattana S,Mangkornkarn C,Wilairat P,Vongsavan N

更新日期：2001-01-01 00:00:00

abstract：:Root resorption after replantation of mature permanent dog incisors was examined by scanning electron microscopy. Three groups consisting of three extracted teeth each were kept in a saline solution for 5, 30, and 120 min before replantation. The first group was replanted with the pulp intact. The second and third gro...

journal_title：Journal of endodontics

authors： Günday M,Sazak H,Türkmen C

更新日期：1995-05-01 00:00:00

abstract：:The anatomy of third molars has been described as unpredictable. However restorative, prosthetic, and orthodontic considerations often require endodontic treatment of third molars in order for them to be retained as functional components of the dental arch. The purpose of this study was to investigate and characterize...

journal_title：Journal of endodontics

authors： Sidow SJ,West LA,Liewehr FR,Loushine RJ

更新日期：2000-11-01 00:00:00

abstract：INTRODUCTION:Electrically heated pluggers are the most commonly used instruments during warm obturation techniques. This study aimed to evaluate the effect of sterilization and operating temperature settings on the heat generation of pluggers of various taper sizes. METHODS:Fifty pluggers were sterilized at 132°C for ...

journal_title：Journal of endodontics

authors： Correa M Jr,Dutner JM,Phillips MB,Sidow SJ,McPherson J

更新日期：2019-12-01 00:00:00