Abstract：
:This study evaluated the ability of ultrasonics and calcium hydroxide to remove pulp tissue debris from the mesial root canals of human mandibular molars. All teeth were instrumented using a standard filing technique and irrigated with an equal volume of 2.6% sodium hypochlorite before the application of the experimental debridement methods. Debridement comparisons were made of both instrumented and uninstrumented controls at the 3-mm and 1-mm levels of the canals and isthmuses. Statistical analysis showed no differences among the experimental groups or the instrumented controls in the canals at either level or isthmuses at the 3-mm level. In the isthmuses at the 1-mm level, no differences were found among the experimental groups, but they were all significantly cleaner than the instrumented controls. These results indicate that calcium hydroxide and ultrasonics are equally effective in debriding the root canal system, and that both are significantly better than standard instrumentation alone in the isthmuses at the 1-mm level.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Metzler RS,Montgomery Sdoi
10.1016/s0099-2399(89)80076-7subject
Has Abstractpub_date
1989-08-01 00:00:00pages
373-8issue
8eissn
0099-2399issn
1878-3554pii
S0099-2399(89)80076-7journal_volume
15pub_type
杂志文章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
pub_type： 杂志文章
doi：10.1097/00004770-200001000-00006
更新日期：2000-01-01 00:00:00
abstract：:The persistent presence of bacteria in the root canal system often leads to the failure of treatment. The aim of this study was to study the in vitro penetration of root dentinal tubules by bacteria. Bovine dentin was inoculated with a strain of Streptococcus sanguis, NCTC 7863; samples were taken at 10, 20, and 28 da...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/s0099-2399(06)80460-7
更新日期：1993-06-01 00:00:00
abstract：INTRODUCTION:The purpose of this study was to assess the ex vivo torsional performance of a novel rotary system in small root canals after 2 different glide path preparations. METHODS:Each independent canal of 8 mesial roots of mandibular molars was randomly assigned to achieve a reproducible glide path with a new set...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.10.034
更新日期：2017-03-01 00:00:00
abstract：INTRODUCTION:The diagnosis and treatment planning of cracked teeth depend on the understanding of how cracks affect the surrounding tissues. This study evaluated the dentin and pulp conditions in teeth affected by cracks and attrition. METHODS:Specimens under investigation included 12 cracked posterior teeth and 8 tee...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2014.09.021
更新日期：2015-03-01 00:00:00
abstract：INTRODUCTION:Difficult handling, long setting time, and potential discoloration are important drawbacks of white mineral trioxide aggregate (WMTA). The development of Biodentine, a recently developed calcium silicate-based material (CSM), has overcome some of these shortcomings; however, there are no available data on ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.12.021
更新日期：2013-04-01 00:00:00
abstract：:The purpose of this in vitro study was to evaluate the accuracy of Root ZX apex locator to determine the working length in teeth with simulated apical root resorption. Fifty extracted, single-rooted, human teeth with mature apices were used in this study. An irregular cavity defect was drilled at the apex of each toot...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200206000-00011
更新日期：2002-06-01 00:00:00
abstract：:This study assessed in vitro the diagnostic ability of cone beam computed tomography (CBCT) scans with different voxel resolutions in the detection of simulated external root resorption (ERR). For that purpose, 59 teeth were viewed through iCAT tomography (Imaging Sciences International, Inc, Hatfield, PA) following t...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2008.11.005
更新日期：2009-02-01 00:00:00
abstract：:The purpose of this study was to evaluate the effect of citric acid and EDTA solutions on the microhardness and the roughness of human root canal dentin. Forty-five human teeth sectioned longitudinally were used. Specimens were randomly divided into three groups of 30 teeth each and were treated as follows: (a) one mo...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/01.don.0000136212.53475.ad
更新日期：2005-02-01 00:00:00
abstract：INTRODUCTION:The health of human teeth depends on the integrity of the hard tissue and the activity of the pulp and periodontal tissues, which are responsible for nutritional supply. Without the nourishing of the pulp tissue, the possibility of tooth fracture can increase. In immature permanent teeth, root development ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.10.002
更新日期：2013-02-01 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
pub_type： 杂志文章,评审
doi：10.1016/j.joen.2010.09.005
更新日期：2011-02-01 00:00:00
abstract：INTRODUCTION:The purpose of this study was to compare digital periapical and cone-beam computed tomography (CBCT) images to determine the number of canals in the mesiobuccal root of maxillary molars and to compare these counts with micro computed tomography (μCT), which was also used to determine canal configuration. ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2013.01.010
更新日期：2013-07-01 00:00:00
abstract：:A technique utilizing fiberoptics to transilluminate a beveled root surface during periradicular surgery is described. This procedure when integrated with other standard endodontic surgical aids may help diagnose apical variations and vertical root fractures. ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)80301-8
更新日期：1994-08-01 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
pub_type： 杂志文章,评审
doi：10.1097/00004770-200004000-00016
更新日期：2000-04-01 00:00:00
abstract：INTRODUCTION:This study evaluated 4 different light-emitting diode (LED) transilluminators and the impact of operator experience in the detection of dentinal defects through an ex vivo TRUEJAW surgical model (Dental Engineering Laboratories, Santa Barbara, CA). METHODS:Forty-four extracted and endodontically treated m...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.10.031
更新日期：2020-02-01 00:00:00
abstract：INTRODUCTION:We evaluated the radiopacity and antibacterial properties of various concentrations of double antibiotic paste (DAP) containing barium sulfate (BaSO4) or zirconium oxide (ZrO2) radiopaque agents. METHODS:The radiopacity of 1, 10, and 25 mg/mL DAP containing 30% (w/v) BaSO4 or ZrO2, DAP-free radiopaque pas...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2018.06.010
更新日期：2018-09-01 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
pub_type： 杂志文章
doi：10.1097/00004770-200401000-00002
更新日期：2004-01-01 00:00:00
abstract：INTRODUCTION:The aim of this study was to examine the effect of pulp cell injection on host angiogenesis during wound healing. METHODS:Pulp cells were isolated from extracted premolars by the outgrowth method. Fluorescently labeled pulp cells or phosphate-buffered saline were locally injected into a mouse wound healin...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2013.01.011
更新日期：2013-06-01 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
pub_type： 杂志文章
doi：10.1097/00004770-200203000-00003
更新日期：2002-03-01 00:00:00
abstract：INTRODUCTION:Complement activation is considered a major mechanism in innate immunity. Although it is mainly involved in initiating inflammation, recent data reported its involvement in other processes such as tissue regeneration. In the dental pulp, complement C5a fragment has been shown to be involved in the recruitm...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.06.011
更新日期：2016-09-01 00:00:00
abstract：:This report describes the case of a patient with mesenchymal chondrosarcoma in the region of tooth #18 that mimicked apical periodontitis. Forty-five days after endodontic treatment, gingival swelling and intense pain were observed. The endodontist suspected a furcation lesion, and the treatment option that the patien...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2008.08.016
更新日期：2008-11-01 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
pub_type： 杂志文章
doi：10.1097/00004770-200005000-00012
更新日期：2000-05-01 00:00:00
abstract：:Intermediate Restorative Material (IRM) has been advocated as a root-end filling material based primarily on reports of clinical success and various leakage studies. The objectives of this study were to determine the excisional wound healing responses of the periradicular tissues to IRM root-end filling material and t...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(97)80201-4
更新日期：1997-01-01 00:00:00
abstract：INTRODUCTION:Regenerative endodontic procedures are an alternative treatment for immature teeth with necrotic pulps. Typically, intracanal medicaments such as triple antibiotic paste (TAP) or double antibiotic paste (DAP) and calcium hydroxide (Ca[OH](2)) are used for disinfection. However, their effect on human stem c...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.06.018
更新日期：2012-10-01 00:00:00
abstract：BACKGROUND:The aim of this in vitro study was to evaluate the depth of penetration of 4 different endodontic resin sealers into the radicular dentinal tubules with the aid of confocal microscopy. METHODS:Eighty single-rooted teeth were instrumented and divided into 4 groups composed of 20 teeth each. The samples were ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.05.017
更新日期：2012-10-01 00:00:00
abstract：INTRODUCTION:Collagen dentin matrix may represent a suitable scaffold to be remineralized in the presence of bioactive materials. The purpose of this study was to determine if experimental resin cements containing bioactive fillers may modulate matrix metalloproteinase-mediated collagen degradation of etched dentin. M...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.05.011
更新日期：2012-09-01 00:00:00
abstract：INTRODUCTION:This in vitro study compared the cyclic fatigue resistance of ProFile Vortex rotary instruments (DENTSPLY Tulsa Dental, Tulsa, OK) made of two different raw materials: M-Wire and regular superelastic wire (SE-wire) at two different rotational speeds. Two rotary-based Profile Vortex instruments with taper 0...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2010.02.015
更新日期：2010-07-01 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
pub_type： 杂志文章
doi：10.1097/00004770-200011000-00011
更新日期：2000-11-01 00:00:00
abstract：INTRODUCTION:This study compared the efficacy of a reciprocating single-instrument system and a rotary multi-instrument system followed by a supplementary approach with a finishing instrument in removing the filling material from curved canals during retreatment. METHODS:Forty mesial canals from extracted mandibular m...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.04.007
更新日期：2016-07-01 00:00:00
abstract：:The purpose of this in vitro study was to compare the extrusion of thermoplacticized gutta-percha in teeth instrumented with Profile 0.06 or Profile GT, and obturated with Thermafil Plus and Thermafil GT, respectively. A total of 120, extracted, human maxillary central incisors were divided into four equal groups. Gro...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200406000-00010
更新日期：2004-06-01 00:00:00
abstract：:Enterococcus faecalis, a pathogenic gram-positive bacterium, is closely related to refractory apical periodontitis. Because lipoteichoic acid (LTA) is considered a major virulence factor of gram-positive bacteria, in the present study, highly pure LTA from E. faecalis was prepared, and its ability to stimulate murine ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2008.05.005
更新日期：2008-08-01 00:00:00
