Abstract：
:The purpose of this study was to quantify the amount of remaining gutta-percha/sealer after retreatment of post space prepared teeth obturated with a lateral condensation technique or with Thermafil with plastic and metallic carrier. The time required for retreatment was also recorded. Forty-five extracted mandibular premolars were prepared using a step-back flared technique and obturated. The post space was prepared and a 5-mm obturation was left in the canal. Retreatment of all groups was done using a solvent technique. The teeth were split longitudinally and photographed. The total area of the canal and the area of gutta-percha/sealer were traced on white paper. Both areas were quantified using a computerized image analysis system and the ratio of remaining obturation material to root canal periphery was derived and statistically analyzed. Statistical analysis (analysis of variance, p = 0.01) showed no differences among the techniques when the average percentage of remaining gutta-percha/sealer was compared. Results revealed that the Thermafil metallic retreatment group consumed significantly more time than the others (analysis of variance, Scheffe p = 0.01). The metallic carriers were not easily removed from the canals, six metal carriers could not be retrieved during the retreatment routine.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Zuolo ML,Imura N,Ferreira MOdoi
10.1016/s0099-2399(06)80019-1subject
Has Abstractpub_date
1994-01-01 00:00:00pages
9-12issue
1eissn
0099-2399issn
1878-3554pii
S0099-2399(06)80019-1journal_volume
20pub_type
杂志文章abstract：INTRODUCTION:Pain present 6 months after root canal treatment (RCT) may be of odontogenic or nonodontogenic origin. This is important because treatments and prognoses are different; therefore, the aim of this study was to provide specific diagnoses of patients reporting pain 6 months after receiving initial orthograde ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2014.12.012
更新日期：2015-04-01 00:00:00
abstract：INTRODUCTION:The dental pulp is highly vascularized and innervated tissue that is uniquely designed, being highly biologically active, while being enclosed within the calcified structure of the tooth. It is well-established that the dental pulp vasculature is a key requirement for the functional performance of the toot...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2020.06.033
更新日期：2020-09-01 00:00:00
abstract：INTRODUCTION:The pulpal anesthetic success rates for an inferior alveolar nerve block (IANB) alone in patients presenting with symptomatic irreversible pulpitis are less than adequate. Nitrous oxide and clonidine have shown increases in IANB success when administered individually, but their success has not been evaluat...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2020.12.014
更新日期：2020-12-30 00:00:00
abstract：:This case series reports the outcomes of 8 patients (ages 9-14 years) who presented with 9 immature permanent teeth with pulpal necrosis and apical periodontitis. During treatment, 5 of the teeth were found to have at least some residual vital tissue remaining in the root canal systems. After NaOCl irrigation and medi...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2008.03.023
更新日期：2008-07-01 00:00:00
abstract：INTRODUCTION:This study intended to evaluate the angiogenic properties of vital pulp therapy materials including white mineral trioxide aggregate (WMTA), calcium hydroxide (Ca[OH]2), Geristore (Den-Mat, Santa Maria, CA), and nano WMTA biomaterials. METHODS:WMTA, Ca(OH)2, Geristore, and nano WMTA disks were prepared, d...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2018.02.008
更新日期：2018-05-01 00:00:00
abstract：INTRODUCTION:The purpose of this prospective, randomized, single-blinded study was to measure the degree of anesthesia obtained with 1.8 mL and 3.6 mL of 2% lidocaine with 1:100,000 epinephrine in posterior superior alveolar (PSA) nerve blocks. METHODS:Thirty-one adult subjects randomly received PSA nerve blocks of 1....
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2010.01.009
更新日期：2010-04-01 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
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2009.07.021
更新日期：2009-11-01 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
pub_type： 杂志文章
doi：10.1097/00004770-200307000-00005
更新日期：2003-07-01 00:00:00
abstract：INTRODUCTION:Various materials have been advocated for use as root-end filling materials. The purpose of the present in vitro study was to compare the cytotoxicity of 4 root-end filling materials: glass ionomer cement (GIC; Fuji II, GC Corp, Tokyo, Japan), reinforced zinc oxide-eugenol cement (IRM; Dentsply Tulsa Denta...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.09.004
更新日期：2012-12-01 00:00:00
abstract：:The purpose of this survey was to investigate the frequency and characteristics of surgery among active endodontists in the United States. The survey also inquired about residency and postresidency training in endodontic surgery. A Web-based questionnaire regarding endodontic surgery was distributed via e-mail to 2,53...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2008.10.008
更新日期：2009-01-01 00:00:00
abstract：INTRODUCTION:Passive ultrasonic irrigation (PUI) is the most widespread method used to activate irrigation solutions. Concerns have been raised that PUI is less effective in curved root canals and is not passive at all. Our aim was to compare a novel passive sonic irrigation (PSI) device (6000 Hz) with PUI and manual i...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.08.024
更新日期：2016-12-01 00:00:00
abstract：:Hepatocyte growth factor (HGF) is a potent mitogenic and angiogenic factor involved in the development of many tissues including the teeth. We previously reported that dental pulp cells express the HGF receptor c-met and that HGF can enhance cell proliferation and differentiation. The purpose of this study was to dete...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2008.11.031
更新日期：2009-03-01 00:00:00
abstract：INTRODUCTION:Complementary methods of anatomic diagnosis, including cone-beam computed tomographic (CBCT) imaging, may be useful in the diagnosis of mesiobuccal (MB) canals of maxillary molars. METHODS:Thirty-five maxillary first molars were subjected to ex vivo analysis and 4 CBCT protocols: i-CAT Classic (Imaging Sc...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.12.011
更新日期：2017-05-01 00:00:00
abstract：INTRODUCTION:The study was designed as a randomized double-blind trial to evaluate the anesthetic efficacy of 4% articaine with 1:100,000 epinephrine in inferior alveolar nerve block (IANB) and infiltration anesthetic techniques to anesthetize mandibular molars with irreversible pulpitis. METHODS:The study was compose...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2011.09.009
更新日期：2011-12-01 00:00:00
abstract：INTRODUCTION:It has been reported that integrin-α5 (ITGA5) activity is related to cell proliferation, differentiation, migration, and organ development. However, the involvement of ITGA5 in the biological functions of human dental pulp stem cells (hDPSCs) has not been explored. The aim of this study was to investigate ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2013.08.011
更新日期：2014-02-01 00:00:00
abstract：INTRODUCTION:The primary aim was to explore the criteria used in characterization of reparative cells and mineralized matrices formed after treatment of pulp exposures, and the sequence of relative events. The secondary aim was to evaluate whether the reparative events depend on the experimental model species, age, and...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2018.12.002
更新日期：2019-03-01 00:00:00
abstract：INTRODUCTION:Lipopolysaccharide (LPS) has been shown to regulate the function of odontoblasts. However, the molecular mechanisms of the effect of LPS on odontoblasts are poorly understood. Decorin (DCN), one of the major matrix proteoglycans, is known to affect the mineralization of teeth. In this study, we investigate...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2011.12.021
更新日期：2012-04-01 00:00:00
abstract：INTRODUCTION:The purpose of this study was to compare the ability of MTA (Dentsply Maillefer, Tulsa, OK) and EndoSequence Root Repair Material (ESRRM; Brasseler USA, Savannah, GA) to set in the presence of human blood and minimal essential media. METHODS:A model was created using polymethyl methacrylate blocks each pr...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2013.04.041
更新日期：2013-08-01 00:00:00
abstract：:A unique case of a mandibular molar with 5 canals is described. Literature pertaining to the analysis of the morphology of mandibular first molars is reviewed. Clinicians should thoroughly examine the pulpal floor and radiographs for the possibility of additional canals. ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(97)80211-7
更新日期：1997-01-01 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
pub_type： 杂志文章
doi：10.1016/s0099-2399(99)80135-6
更新日期：1999-03-01 00:00:00
abstract：INTRODUCTION:Dental discoloration with use of materials containing bismuth oxide has been reported. It is postulated that the discoloration is a result of chemical interaction of bismuth oxide with dentin. The aim of the study was to analyze dental color alteration and the chemical interaction of bismuth oxide with the...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2014.01.044
更新日期：2014-08-01 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
pub_type： 杂志文章
doi：10.1016/S0099-2399(97)80347-0
更新日期：1997-12-01 00:00:00
abstract：INTRODUCTION:The lysyl oxidase (LOX) family is an emerging family of amine oxidases responsible for the formation of collagen fibrils in the extracellular matrix. To date, 5 LOX family genes have been identified in humans, encoding LOX and LOX-like proteins (LOXL, LOXL2, LOXL3, and LOXL4). The goal of this study was to...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.03.014
更新日期：2012-06-01 00:00:00
abstract：:Little is known about the effect of aging on characteristic functions of pulp cells. When damaged pulp is recovered and mineralized tissue is formed to protect remaining pulp tissue, the general responses of pulp tissue after adequate stimuli (pulp cell proliferation and activation of alkaline phosphatase [ALPase]) ar...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200301000-00003
更新日期：2003-01-01 00:00:00
abstract：INTRODUCTION:Odontoblasts produce dentin throughout life and in response to trauma. The purpose of this study was to identify the roles of endogenous Wnt signaling in regulating the rate of dentin accumulation. METHODS:Histology, immunohistochemistry, vital dye labeling, and histomorphometric assays were used to quant...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.07.014
更新日期：2019-11-01 00:00:00
abstract：:Type IV matrix metalloproteinases (MMPs) are members of the family of MMPs and are thought to play an important role in degradation of extracellular components. Human pulp cells can secrete and produce these enzymes. Recent evidence shows that MMPs may play a role in pulpal inflammation. To date little is known regard...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200111000-00007
更新日期：2001-11-01 00:00:00
abstract：INTRODUCTION:Failure in endodontic treatment is often caused by the persistence of microorganisms in the root canal after therapy. When treatment fails, an immune response develops that is characterized by an extensive network of immunologic mechanisms that lead to the production of cytokines and chemokines. METHODS:T...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2011.08.007
更新日期：2011-12-01 00:00:00
abstract：:This in vitro study evaluated the survival rate and fracture resistance of maxillary central incisors restored with different post and core systems. The post and core systems investigated were a prefabricated high precious metal post with cast core (group A), zirconia post with a prefabricated bonded ceramic core (gro...
journal_title：Journal of endodontics
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/00004770-200210000-00008
更新日期：2002-10-01 00:00:00
abstract：INTRODUCTION:Porphyromonas gingivalis and Tannerella forsythia are anaerobic bacteria commonly involved in root canal infections. Although previous investigations have assessed these species by strictly qualitative approaches, accurate determination of their cell levels by a sensitive quantitative technique may contrib...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2009.08.005
更新日期：2009-11-01 00:00:00
abstract：INTRODUCTION:The aim of the present study was to investigate the impact of ambient temperature on the life span of nickel-titanium (NiTi) files. METHODS:Cyclic fatigue testing of NiTi instruments was performed in a stainless steel artificial canal. During the experiment, 4 different temperatures (0°C, 20°C, 35°C, and ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2018.06.006
更新日期：2018-10-01 00:00:00
