abstract：:The present survey was conducted to obtain answers to some basic questions regarding the use of intracanal medications, root canal filling methods, and the intracanal breakage of instruments. A letter was sent to 300 endodontists listed in the 1995-1996 membership roster of the American Association of Endodontists. Ei...

journal_title：Journal of endodontics

authors： Itoh A,Higuchi N,Minami G,Yasue T,Yoshida T,Maseki T,Nakamura H

更新日期：1999-12-01 00:00:00

abstract：:The purpose of this study was to compare the cleaning efficacy of passive ultrasonic activation with that of passive sonic activation after hand instrumentation. Sixty curved molar canals were hand-instrumented to size 35 and divided into three groups. Group 1 received no further treatment. Group 2 received 3 min of p...

journal_title：Journal of endodontics

authors： Jensen SA,Walker TL,Hutter JW,Nicoll BK

更新日期：1999-11-01 00:00:00

abstract：:In this study, the effects of heparin on dentinal resorption was investigated in rats. Animals were injected with 2 x 2 IU/g Na-Heparin subcutaneously for 33 days. Histopathological examination of the anterior teeth revealed capillary proliferation, congestion, and fibrosis in the pulp in addition to resorptive lacuna...

journal_title：Journal of endodontics

authors： Kuraner T,Ozçelik B,Serper A,Mocan G,Mümin E,Eryilmaz M

更新日期：1999-10-01 00:00:00

abstract：:The shape of root canals cross-sectioned through their roots at 2 mm from their apices and its correlation with the D0 diameter of endodontic instruments was evaluated in 40 first upper molars. The molars were grouped according to age: under 13 yr (children), 18 to 20 yr (adolescents), 30 to 40 yr (adults), and over 5...

journal_title：Journal of endodontics

authors： Gani O,Visvisian C

更新日期：1999-10-01 00:00:00

abstract：:The purpose of this in vitro study was to compare dye leakage between canals backfilled in a single increment and canals backfilled in multiple increments using the Obtura II system with two different sealers. Sixty extracted single canal teeth were decoronated, cleaned, and shaped. After master cone fit and placement...

journal_title：Journal of endodontics

authors： Johnson BT,Bond MS

更新日期：1999-09-01 00:00:00

abstract：:This study evaluated the sealing ability of fast and regular set Super-EBA with different powder-to-liquid ratios as a root-end filling material. Fifty extracted maxillary central incisors were uniformly cleaned and shaped using a crown-down technique with Gates-Glidden drills and Profile series 29.04 taper rotary ins...

journal_title：Journal of endodontics

authors： Yaccino JM,Walker WA 3rd,Carnes DL Jr,Schindler WG

更新日期：1999-08-01 00:00:00

abstract：:In the present study, we investigated the effect of the addition of different grades of gum rosins and hydrogenated resins to Grossman cement on dimensional stability, solubility and disintegration. pH and conductivity, which may affect these properties, were also determined. The experiments were performed according t...

journal_title：Journal of endodontics

authors： Sousa-Neto MD,Guimarães LF,Saquy PC,Pécora JD

更新日期：1999-07-01 00:00:00

abstract：:Black-pigmented bacteria (BPB) have been associated with endodontic infections. The purpose of this study was to evaluate further the presence of BPB with the clinical signs and symptoms associated with endodontic infections. Microbial samples were collected from the root canals of 40 intact teeth with necrotic pulps ...

journal_title：Journal of endodontics

authors： Baumgartner JC,Watkins BJ,Bae KS,Xia T

更新日期：1999-06-01 00:00:00

abstract：:Occlusal endodontic access preparations are occasionally made in teeth without removing the original restoration. However, microleakage between restorative materials that are placed at different times has not been extensively studied. Therefore, our objective was to compare microleakage at three areas: between an acce...

journal_title：Journal of endodontics

authors： Pai SF,Yang SF,Sue WL,Chueh LH,Rivera EM

更新日期：1999-06-01 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

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 the present study was to evaluate the in vivo antimicrobial activity of 2% chlorhexidine gluconate (FCFRP-USP) used as a root canal irrigating solution in teeth with pulp necrosis and radiographically visible chronic periapical reactions. Culture techniques and measurement of the inhibition zone were used. ...

journal_title：Journal of endodontics

authors： Leonardo MR,Tanomaru Filho M,Silva LA,Nelson Filho P,Bonifácio KC,Ito IY

更新日期：1999-03-01 00:00:00

abstract：:The purpose of this study was to examine the effect of the smear layer on apical microleakage over 16 wk. One hundred and four extracted human teeth were assigned to four groups treated as follows: group A1--smear layer was left intact and canals were obturated with gutta-percha and Roth 811; group A2--smear layer was...

journal_title：Journal of endodontics

authors： Economides N,Liolios E,Kolokuris I,Beltes P

更新日期：1999-02-01 00:00:00

abstract：:The purpose of the present study was to investigate the effect of laser irradiation on calcified nodule formation in human dental pulp (HDP) cells. HDP cells were irradiated once with a Ga-Al-As laser for 5 and 10 min, and calcified nodule formation was determined by von Kossa staining. The laser irradiation increased...

journal_title：Journal of endodontics

authors： Ohbayashi E,Matsushima K,Hosoya S,Abiko Y,Yamazaki M

更新日期：1999-01-01 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：:A comparison of the microleakage of mineral trioxide aggregate (MTA) and a high copper admix amalgam (Valiant PhD) in root-end preparations was made using a fluid conductive device. Thirty-three bilaterally matched pairs of extracted, single-rooted teeth were prepared and obturated using lateral compaction of gutta-pe...

journal_title：Journal of endodontics

authors： Yatsushiro JD,Baumgartner JC,Tinkle JS

更新日期：1998-11-01 00:00:00

abstract：:The purpose of this study was to compare intracanal bacterial reduction on teeth instrumented with 0.04 tapered nickel-titanium (NiTi) rotary instrumentation to bacterial reduction when using a stainless-steel K-file step-back technique using sterile saline irrigation. Forty-eight patients with apical periodontitis we...

journal_title：Journal of endodontics

authors： Dalton BC,Orstavik D,Phillips C,Pettiette M,Trope M

更新日期：1998-11-01 00:00:00

abstract：:Ultrasonic root-end preparation techniques have recently been introduced and revolutionized the field of endodontic surgery. The purpose of this study was to compare quantitatively the quality of root-end preparation techniques prepared by a specially designed ultrasonic retrotip with those prepared in a traditional m...

journal_title：Journal of endodontics

authors： Lin CP,Chou HG,Kuo JC,Lan WH

更新日期：1998-10-01 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：:A tight and long-lasting seal of root-end fillings is of prime clinical importance. A hundred standard bovine root sections, each 3 mm high and with a central pulp lumen of 2.6 mm in diameter, were filled with five commonly used or potential root-end filling materials. At 24 h, or at 3, 6, or 12 months after filling, ...

journal_title：Journal of endodontics

authors： Wu MK,Kontakiotis EG,Wesselink PR

更新日期：1998-08-01 00:00:00

abstract：:K-type files, Sureflex NiTi files, and FlexoFiles were evaluated morphometrically as they come from the manufacturer, and after being used to instrument root canals 1, 3, and 5 times in maxillary premolars. Evaluation was made using a stereomicroscope at x40 magnification and photomicrographs. The abnormalities found ...

journal_title：Journal of endodontics

authors： Bonetti Filho I,Miranda Esberard R,de Toledo Leonardo R,del Rio CE

更新日期：1998-07-01 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：:The purpose of this study was to evaluate the dental anxiety expressed among patients undergoing endodontic treatment with respect to some social and dental parameters. The dental records of 98 patients, 42 men and 56 women who were referred for root canal treatment to an endodontist, were examined. Patients completed...

journal_title：Journal of endodontics

authors： Peretz B,Moshonov J

更新日期：1998-06-01 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：:Three randomly assigned groups of single-canaled extracted teeth obturated with gutta-percha were retreated using controlled application of one of three organic solvents: chloroform, xylene, or halothane. Two additional groups of teeth served as positive and negative controls. Residual volume of solvent expressed thro...

journal_title：Journal of endodontics

authors： Chutich MJ,Kaminski EJ,Miller DA,Lautenschlager EP

更新日期：1998-04-01 00:00:00

abstract：:The purpose of this study was to evaluate the strengthening effect of an internal resin bonding technique. One hundred central incisors were endodontically treated and divided equally into five groups. Group 1, without any cervical preparation and with access repaired with bonded resin, served as the positive control....

journal_title：Journal of endodontics

authors： Katebzadeh N,Dalton BC,Trope M

更新日期：1998-04-01 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：: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

authors： Hinrichs RE,Walker WA 3rd,Schindler WG

更新日期：1998-02-01 00:00:00

abstract：:A method of using osseointegrated implants as an alternative treatment modality for transverse root fractures near the osseous crest is presented. A 15-mm Branemark implant was placed immediately after extraction of a maxillary central incisor with transverse root fracture. Five months after stage I surgery, the impla...

journal_title：Journal of endodontics

authors： Hernandez RE,Balshi TJ

更新日期：1998-02-01 00:00:00

abstract：:The purposes of this study were to determine quantitatively the amount of debris and irrigant forced in an apical direction, the frequency of apical plug development, and the time required to prepare canals when a step-back technique using K-files was compared with the .04 Taper system. Sixty-nine extracted teeth with...

journal_title：Journal of endodontics

authors： Beeson TJ,Hartwell GR,Thornton JD,Gunsolley JC

更新日期：1998-01-01 00:00:00

abstract：:Thirteen teeth in human cadaver sections were accessed and #15 K-files were placed at various lengths in one root canal of each tooth. Using a positioner to ensure duplicate views, radiographs were taken with both Ultraspeed and Ektaspeed Plus X-ray film. Each of the 26 radiographs was coded and then placed in random ...

journal_title：Journal of endodontics

authors： Brown R,Hadley JN,Chambers DW

更新日期：1998-01-01 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

authors： Thompson SA,Dummer PM

更新日期：1997-12-01 00:00:00

abstract：:Dentin permeability and hypersensitivity are both reduced when the dentinal tubules are occluded. Previous scanning electron microscopic studies showed that Nd:YAG laser could cause melting of dentin and closure of exposed dentinal tubules without dentin surface cracking. Therefore, the aim of the present study was to...

journal_title：Journal of endodontics

authors： Liu HC,Lin CP,Lan WH

更新日期：1997-11-01 00:00:00

abstract：:This study was carried out to investigate the effect of changes in tooth structure due to masticatory cycles on amalgam retrofillings performed to different cavity depths. Forty upper maxillary first molars were tested. In the obturated palatal root apical amalgam was inserted to different depths (1.5 and 3 mm). Eight...

journal_title：Journal of endodontics

authors： Blum JY,Esber S,Parahy E,Franquin JC

更新日期：1997-10-01 00:00:00

abstract：:Endodontic fillings were challenged with bacterial ingress in mandibular premolars of 4 beagle dogs. Groups 1, 2, and 3 (n = 9), had canals filled with gutta-percha and sealer, gutta-percha alone, and sealer alone, respectively. After 2 wk, pulp chambers were inoculated with plaque. Group 4 (n = 9) and group 5 (n = 5)...

journal_title：Journal of endodontics

authors： Friedman S,Torneck CD,Komorowski R,Ouzounian Z,Syrtash P,Kaufman A

更新日期：1997-09-01 00:00:00

abstract：:This report presents a rare case of odontogenic cutaneous sinus tract caused by a vertical root fracture. The root-fractured molar was probably caused by an accidental blow by a cow 3 years ago. Despite all treatments by physicians and surgeons for nearly 1 year, the sinus tract recurred repeatedly. After diagnosis an...

journal_title：Journal of endodontics

authors： Chan CP,Chang SH,Huang CC,Wu SK,Huang SK

更新日期：1997-09-01 00:00:00

abstract：:The purpose of this study was to compare three engine driven (nickel-titanium) NiTi instrument systems with hand files for their effect on canal transportation. Mesial roots of mature lower first molars with separate canals were paired on the basis of curvature and morphology. Canal lengths were standardized to 11 mm ...

journal_title：Journal of endodontics

authors： Short JA,Morgan LA,Baumgartner JC

更新日期：1997-08-01 00:00:00

abstract：:The purpose of this study was to compare ultrasonic and high-speed-bur root-end preparations. Seventy-six roots from 29 bilaterally matched pairs of human teeth in cadavers were used in this study. In group 1 ultrasonic preparations were made in 38 roots and filled with amalgam. In group 2 high-speed bur preparations ...

journal_title：Journal of endodontics

authors： Mehlhaff DS,Marshall JG,Baumgartner JC

更新日期：1997-07-01 00:00:00

abstract：:A technique using K files with modified tips has been developed for the penetration of constricted canals. The tip of a #10 K file was sliced diagonally to make it thinner. Because this modified K file has an especially fine tip and an appropriate stiffness, it followed constricted or sharply curved canals well and ha...

journal_title：Journal of endodontics

authors： Kobayashi C

更新日期：1997-06-01 00:00:00

abstract：:Atypical odontalgia is characterized by prolonged periods of throbbing or burning pain in the teeth or alveolar process, which occurs in the absence of any identifiable odontogenic etiology. The pain may be bilateral and change in location. This article presents two cases of atypical odontalgia that were misdiagnosed ...

journal_title：Journal of endodontics

authors： Lilly JP,Law AS

更新日期：1997-05-01 00:00:00