Abstract:
:Previous dye leakage studies have shown that mineral trioxide aggregate leaks significantly less than other commonly used root-end filling materials. This study determined the time needed for Staphylococcus epidermidis to penetrate a 3-mm thickness of amalgam, Super-EBA, Intermediate Restorative Material (IRM), or mineral trioxide aggregate (MTA) as root-end filling materials. Fifty-six single-rooted extracted human teeth were cleaned and shaped using a step-back technique. Following root-end resection, 48 root-end cavities were filled with amalgam, Super-EBA, IRM, or MTA. Four root-end cavities were filled with thermoplasticized gutta-percha without a root canal sealer (+ control), and another four were filled with sticky wax covered with two layers of nail polish (- control). After attaching the teeth to plastic caps of 12-ml plastic vials and placing the root ends into phenol red broth, the set-ups were sterilized overnight with ethylene dioxide gas. A tenth of a microliter of broth containing S. epidermidis was placed into the root canal of 46 teeth (40 experimental, 3 positive, and 3 negative control groups). In addition, the root canals of two teeth with test root-end filling materials and one tooth from the positive and negative control groups were filled with sterile saline. The number of days required for the test bacteria to penetrate various root-end filling materials was determined. Most samples whose apical 3 mm were filled with amalgam, Super-EBA, or IRM began leaking at 6 to 57 days.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Torabinejad M,Rastegar AF,Kettering JD,Pitt Ford TRdoi
10.1016/s0099-2399(06)80433-4subject
Has Abstractpub_date
1995-03-01 00:00:00pages
109-12issue
3eissn
0099-2399issn
1878-3554pii
S0099-2399(06)80433-4journal_volume
21pub_type
杂志文章abstract::Historically, pulp-necrotizing agents were commonly used in endodontic treatments. They act quickly and devitalize the pulp within a few days. However, they are cytotoxic to gingiva and bone. If such an agent diffuses out of the cavity, it can readily cause widespread necrosis of gingiva and bone, which can lead to os...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/01.don.0000125881.18872.ef
更新日期:2004-10-01 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
pub_type: 杂志文章
doi:10.1016/j.joen.2008.10.009
更新日期:2009-01-01 00:00:00
abstract::A case is presented in which a previous partial root canal treatment on a mandibular molar developed internal resorption of the distal canal. The case was followed at the University of Oklahoma student clinic and endodontic treatment completed in the mesial canals, with calcium hydroxide placed in the distal canal for...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200107000-00010
更新日期:2001-07-01 00:00:00
abstract::This study was aimed at comparing the cultivable microorganisms in canals with periapical radiolucencies with exposed and unexposed pulp space. Microbiological samples were taken and analyzed from 45 canals with exposed pulp space, and 43 canals with unexposed pulp space. The canal contents were analyzed by aerobic/an...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/01.don.0000148149.27636.9c
更新日期:2005-06-01 00:00:00
abstract::With all the potential for endodontic success, the fact remains clinicians are confronted with posttreatment endodontic disease. When the elected treatment plan is endodontic nonsurgical retreatment, then the goal is to access the pulp chamber and remove materials from the root canal space and if present, address defi...
journal_title:Journal of endodontics
pub_type: 杂志文章,评审
doi:10.1097/01.don.0000145033.15701.2d
更新日期:2004-12-01 00:00:00
abstract:INTRODUCTION:This study evaluated the cyclic fatigue resistance (CFR) of Reciproc (R25 and R40; VDW, Munich, Germany) and Reciproc Blue (R25 and R40, VDW) instruments used in an artificial S-shaped canal. METHODS:A total of 80 files were tested in an S-shaped canal (n = 20 for each file, Reciproc R25 and R40 and Recip...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2017.04.009
更新日期:2017-10-01 00:00:00
abstract:INTRODUCTION:In a clinical situation, an apically resected tooth is often accompanied by a varying degree of periodontal bone loss. The purpose of this study was to assess the influence of apical root resection combined with periodontal bone loss on the biomechanical response of a single-rooted tooth. METHODS:A basic ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2014.11.011
更新日期:2015-03-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to assess the effect of nitrogen ion implantation on the flexibility of rotary nickel-titanium (NiTi) instruments as measured by the load required to bend implanted and nonimplanted instruments at a 30° angle. METHODS:Thirty K3 files, size #40, 0.02 taper and 25-mm length, were a...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2012.01.012
更新日期:2012-05-01 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:This clinical study was conducted to measure the endotoxin levels in infected root canals (RCs) and exudates related to acute apical abscesses (AAAs). In addition, the effectiveness of RC procedures in reducing the endotoxin levels in RCs was monitored. METHODS:Paired samples of infected RCs and exudates ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.10.008
更新日期:2014-02-01 00:00:00
abstract::The purpose of this study was to evaluate a new periapical index based on cone beam computed tomography (CBCT) for identification of apical periodontitis (AP). The periapical index proposed in this study (CBCTPAI) was developed on the basis of criteria established from measurements corresponding to periapical radioluc...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2008.08.013
更新日期:2008-11-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to evaluate the effects of endodontic irrigants on the push-out strength and hydration behavior of accelerated mineral trioxide aggregate (MTA) in its early setting phase. METHODS:In an in vitro perforation model, MTA with or without 10% CaCl(2) was condensed and allowed to i...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2010.08.039
更新日期:2010-12-01 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
pub_type: 杂志文章,评审
doi:10.1097/00004770-200306000-00001
更新日期:2003-06-01 00:00:00
abstract:INTRODUCTION:The aim was to assess the association of inducible costimulator (ICOS) and ICOS ligand with bone destruction in apical periodontitis (AP). METHODS:Specimens from patients presenting with AP were obtained during apicoectomy and subjected to histopathologic analysis and molecular assessment of ICOS/ICOS lig...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2019.03.018
更新日期:2019-07-01 00:00:00
abstract:INTRODUCTION:The purpose of this investigation was to determine the effect that apical preparation size and preparation taper have on the volume of irrigant delivered at the working length for different canal curvatures using apical negative pressure irrigation. METHODS:One hundred fifty-five human teeth (55 maxillary...
journal_title:Journal of endodontics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.joen.2012.10.008
更新日期:2013-01-01 00:00:00
abstract::Fusion and gemination are developmental anomalies of the dental hard tissues that might require endodontic and surgical treatment for functional, orthodontic, or esthetic reasons. In this article, we report a rare case of successful endodontic management of unilateral fused mandibular second molar with a paramolar. Th...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2007.06.021
更新日期:2007-10-01 00:00:00
abstract:INTRODUCTION:Teeth undergoing initial endodontic therapy have a very high survival rate. Some teeth that continue to show signs of pathosis after the initial therapy will require nonsurgical (orthograde) retreatment. Outcome assessment of endodontic retreatment is crucial for appropriate case selection and treatment pl...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2010.02.009
更新日期:2010-05-01 00:00:00
abstract::Twenty volunteers with first molars free of restorations and caries were recruited. One molar from each arch was selected, and rubber dam was applied. Seven sites on each crown were electric pulp tested 4 times with an Elements Diagnostic Unit, and lowest threshold responses were recorded. Data were analyzed with one-...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2007.08.006
更新日期:2007-11-01 00:00:00
abstract:INTRODUCTION:This in vitro study compared cone-beam computed tomography (CBCT) exam with different voxel sizes with digital periapical radiography in the detection of vertical root fractures in teeth with and without intracanal metallic posts. METHODS:Eighteen single-rooted human teeth were endodontically treated, pre...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.08.031
更新日期:2013-12-01 00:00:00
abstract::The treatment of an undeveloped (immature) tooth with a carious exposure has been reported extensively in the literature. The main objective of treatment is to provide vital pulp therapy to allow continued development of root dentin in the hope that the root will attain full maturity. A case report is presented that i...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200311000-00022
更新日期:2003-11-01 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
pub_type: 杂志文章
doi:10.1016/j.joen.2016.05.006
更新日期:2016-08-01 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
pub_type: 杂志文章
doi:10.1016/j.joen.2006.08.014
更新日期:2007-02-01 00:00:00
abstract::The purpose of treating furcal perforation is to seal the artificial communication between the endodontic space and the periradicular tissue to prevent alveolar bone resorption and damage to the periodontal ligament. These complications are not infrequent in cases of furcal and/or old perforations, which show a worse ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2008.05.019
更新日期:2008-09-01 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
pub_type: 杂志文章
doi:10.1016/j.joen.2014.02.019
更新日期:2014-09-01 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
pub_type: 杂志文章,评审
doi:10.1016/s0099-2399(06)81130-1
更新日期:1997-09-01 00:00:00
abstract::Orthodontic tooth movement has been implicated in secondary changes to the dental pulp. The purpose of this study was to correlate the effects of orthodontic tooth movement on the dental pulp by histomorphometric parameters. Four groups, each consisting of 36 male adult Sprague-Dawley strain rats, were studied with di...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)81034-4
更新日期:1993-01-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to evaluate the fracture strength of roots instrumented with the Self-Adjusting File (SAF; ReDent-Nova, Ra'anana, Israel) and the ProTaper system (Dentsply Maillefer, Ballaigues, Switzerland) and filled with the cold lateral compaction technique. METHODS:In total, 50 mandibul...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.08.030
更新日期:2014-04-01 00:00:00
abstract:INTRODUCTION:Calcium hydroxide has been used as a traditional pulpotomy agent for a long time but has some disadvantages. iRoot BP Plus (Innovative Bioceramix Inc, Vancouver, Canada) is a newly developed, ready-to-use calcium silicate-based bioactive ceramic with excellent bioactivity and sealing ability. However, whet...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2019.12.010
更新日期:2020-03-01 00:00:00
abstract:INTRODUCTION:This study aimed at evaluating the bond strength to root dentin of 2 mineral trioxide aggregate (MTA)-based sealers (Endo-CPM sealer and MTA Fillapex) and of 1 epoxy resin-based sealer (AH Plus sealer). METHODS:Forty-five extracted human teeth with single roots were prepared by using the step-back techniq...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2011.10.018
更新日期:2012-02-01 00:00:00
abstract::A previous study showed that the ferret canine is an appropriate model for inducing periapical lesions. Ferret canines were used in this study to study changes in periapical lesions after root canal treatment (RCT). After periapical pathosis was induced in the maxillary and mandibular canines of six ferrets, RCT was p...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)80506-6
更新日期:1993-03-01 00:00:00