Abstract:
INTRODUCTION:The aim of this study was to compare the efficacy of passive ultrasonic irrigation (PUI) and the EndoVac (EV) System (Discus Dental, Culver City, CA) in hard tissue debris removal and its influence on the quality of the root canal filling with the aid of micro-computed tomographic scanner. METHODS:Twenty-four mandibular molars were subjected to 4 microtomographic scannings (ie, before and after instrumentation, after final irrigation, and after obturation) using the SkyScan 1176 X-ray microtomograph (Bruker microCT, Kontich, Belgium) at a resolution of 17.42 μm. Mesial canals were prepared using R25 Reciproc instruments (VDW GmbH, Munich, Germany) and divided into 2 groups according to the final irrigation method: the PUI group (n = 12) and the EV group (n = 12). All specimens were filled with the continuous wave of condensation technique. CTAn and CTvol software (Bruker microCT) were used for volumetric analysis and 3-dimensional model reconstruction of the root canals, hard tissue debris, and the filling material. Data were statistically analyzed using the Student t test. RESULTS:Analysis of the micro-computed tomographic scans revealed debris accumulated inside the root canals, occupying an average of 3.4% of the canal's volume. Irrigation with PUI and the EV system reduced the volume of hard tissue debris in 55.55% and 53.65%, respectively, with no statistical difference between them (P > .05). Also, there was no difference among the groups with regard to the volume of filling material and voids (P > .05). CONCLUSIONS:PUI and the EV system were equally efficient in the removal of hard tissue debris and the quality of root canal filling was similar in both groups, with no influence from the irrigation method.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Freire LG,Iglecias EF,Cunha RS,Dos Santos M,Gavini Gdoi
10.1016/j.joen.2015.05.001subject
Has Abstractpub_date
2015-10-01 00:00:00pages
1660-6issue
10eissn
0099-2399issn
1878-3554pii
S0099-2399(15)00409-4journal_volume
41pub_type
杂志文章abstract:INTRODUCTION:The aim of this study was to assess the root canal configurations in permanent mandibular lateral incisors (PMLIs) and the correlation between the root canal configurations of PMLIs with the appearance of a distolingual root (DLR) in permanent mandibular first molars (PMFMs) using cone-beam computed tomogr...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2017.08.027
更新日期:2018-01-01 00:00:00
abstract::Dentinal chips and different biocompatible materials have been used in the past as apical plugs to enhance healing and simplify obturation. The purpose of this study was to evaluate bone reactions to implants of hydroxyapatite, collagen, and calcium hydroxide, alone or in different combinations. The materials were imp...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(07)80175-0
更新日期:1990-10-01 00:00:00
abstract::This study examined the effects of calcium-depleting endodontic irrigants, ethylenediamine tetra-acetic acid (EDTA) and BioPure MTAD, on the dissolution, surface characteristics, and ultrastructural characteristics of white mineral trioxide aggregate (MTA). The latter was mixed in a 0.35 water-cement ratio, condensed ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2006.12.002
更新日期:2007-04-01 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
pub_type: 杂志文章
doi:10.1016/S0099-2399(97)80190-2
更新日期:1997-06-01 00:00:00
abstract::The purpose of this study was to evaluate the durability of insulated probes designed to be used with the Endocater Apex Locator when put through multiple cleaning and autoclaving cycles. The manufacturer has reported that the plastic coating on the probes is reliable with normal use and sterilizable up to a maximum o...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)81502-5
更新日期:1993-08-01 00:00:00
abstract:INTRODUCTION:More information regarding the ability of single files to maintain the original canal position is required before adopting a single-file approach to cleaning and shaping. This study compares apical transportation in curved root canals when instrumenting with a single WaveOne (WO) file (Dentsply Tulsa Denta...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.09.021
更新日期:2014-05-01 00:00:00
abstract::The effectiveness of endodontic antimicrobial treatment could be determined using sensitive molecular methods. The purpose of this study was to determine if antibiotics or endodontic reagents interfere with the ability of PCR to detect Enterococcus faecalis in vitro. Amoxicillin (25 mg/ml), clindamycin (15 mg/ml), tet...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/01.don.0000152899.54247.4e
更新日期:2005-07-01 00:00:00
abstract:INTRODUCTION:The objective of this study was to compare the outcomes of initial nonsurgical root canal therapy for different tooth types provided by both endodontists and other providers. METHODS:By using an insurance company database, 487,476 initial nonsurgical root canal therapy procedures were followed from the ti...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2016.02.008
更新日期:2016-05-01 00:00:00
abstract:INTRODUCTION:The inferior alveolar nerve (IAN) injection is 1 of the most commonly administered and useful injections in the field of dentistry. Practitioners use intraoral anatomic landmarks, which vary greatly among patients. The objective of this study was to assist practitioners by identifying a range of normal var...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2015.12.009
更新日期:2016-03-01 00:00:00
abstract:INTRODUCTION:The management of endodontic emergencies has been particularly challenging during the coronavirus disease 2019 (COVID-19) outbreak because of the possible generation of airborne particles and aerosols. The aim of this report was to contribute to the practice of endodontics by proposing a general protocol f...
journal_title:Journal of endodontics
pub_type: 杂志文章,评审
doi:10.1016/j.joen.2020.09.018
更新日期:2021-01-01 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: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:Issues pertaining to the effective elimination of bacterial biofilm and disruption of biofilm structure still remains in endodontic disinfection. Nanoparticulates such as chitosan (CS-np) and zinc oxide (ZnO-np) are known to possess significant antibacterial properties. This study aimed to test (1) the eff...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2010.02.008
更新日期:2010-06-01 00:00:00
abstract::EDTA-T and 10% citric acid used as root canal irrigants lead to more visible dentinal tubules than 5% sodium hypochlorite associated with 3% hydrogen peroxide. However, these cleansing agents must be compatible with apical periodontal tissue. We analyzed the cytotoxicity of 10% citric acid and EDTA-T in cultured fibro...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200112000-00007
更新日期:2001-12-01 00:00:00
abstract::It is known that many factors participate in the process of inflammation and pain transmission. Recently, various neuropeptides have been demonstrated in the intrapulpal nerve fibers immunobiohistochemically. These neuropeptides may play some role in the process of inflammation and transmission of pain sensation. In t...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)81566-9
更新日期:1990-02-01 00:00:00
abstract::The objective of this study was to evaluate the cytotoxicity of three endodontic sealers (AH Plus/Maillefer-Dentsply, Epiphany/Pentron, GuttaFlow, Coltene-Whaledent). Materials were mixed according to the manufacturer instructions and packed into Teflon molds (10 x 1 mm). For cytotoxicity testing (MTT method), the spe...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2006.05.006
更新日期:2006-10-01 00:00:00
abstract:INTRODUCTION:This ex vivo study compared the disinfection and shaping abilities of 2 preparation protocols in C-shaped canals. METHODS:Mandibular second molars with type I C-shaped canals were pair matched based on micro-computed tomographic (micro-CT) analysis and distributed into 2 groups. The canals were contaminat...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2020.11.007
更新日期:2020-11-18 00:00:00
abstract:INTRODUCTION:This study addressed the following population, intervention, comparator, outcome, timing, study design and setting question: in patients with preoperative pain who undergo single-visit nonsurgical endodontic treatment, what is the comparative efficacy of corticosteroids compared with other analgesics or pl...
journal_title:Journal of endodontics
pub_type: 杂志文章,meta分析
doi:10.1016/j.joen.2018.05.015
更新日期:2018-09-01 00:00:00
abstract::The purpose of this study was to evaluate the effect of occlusal load on the integrity of root canal obturation. Maxillary anterior teeth were cleaned, shaped, and obturated with either gutta-percha (GP)/AH Plus or Resilon/Epiphany. Afterwards, teeth were placed under 100 N force at 2 Hz for 22 hours in a 37 degrees C...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2008.01.022
更新日期:2008-04-01 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
pub_type: 杂志文章
doi:10.1016/S0099-2399(98)80131-3
更新日期:1998-05-01 00:00:00
abstract:INTRODUCTION:This retrospective study aimed to analyze the effect of repairing endodontic access cavities with composite on the survival of single crowns and retainer restorations of fixed or removable dental prostheses. METHODS:Dental records of patients attending a university dental clinic were retrospectively scree...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2019.11.012
更新日期:2020-03-01 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::In this study, we examined the effects of TNF-alpha on Bone morphogenetic protein (BMP-2), Smads (which play intracellular signaling of BMPs) expression and alkaline phosphatase (ALP) activity of human dental pulp (HDP) cells to clarify the mechanism of tertiary dentin formation. The quantity of RT-PCR product for BMP...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2005.12.007
更新日期:2006-06-01 00:00:00
abstract::Conventional and surgical endodontic management were performed on a two-rooted maxillary central incisor with a periapical lesion. Anatomical complexity of the tooth lead to perforation in the distal root during conventional treatment, thus a surgical approach was taken. A 4-month postoperative radiograph shows repair...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200306000-00011
更新日期:2003-06-01 00:00:00
abstract::This study is a quantitative assessment of the luminous energy transmitted through different translucent fiber posts. After embedding the posts in black resin, the blocks were submitted to sequential cuts in a precision machine, and depths of 16 mm, 12 mm, 8 mm, and 4 mm were assessed for light transmission with a dig...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2007.12.007
更新日期:2008-03-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to evaluate the effect of chitosan-hydroxyapatite precursor (C-HA) nanocomplex conditioning on the chemical modifications at the tricalcium silicate sealer-dentin interface using time-of-flight secondary ion mass spectrometry. METHODS:Dentin slabs from human premolar root den...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2019.08.011
更新日期:2019-12-01 00:00:00
abstract::No information could be found in the dental literature on the hardness or strength of the materials in root canal instruments. Hardness testing is a convenient method for examining these products, and strength properties can be deduced from available strength-hardness data. The Vickers hardness of cross-sections of st...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(96)80274-3
更新日期:1996-02-01 00:00:00
abstract:INTRODUCTION:Previous studies in patients with irreversible pulpitis have reported increased success of the inferior alveolar nerve block (IANB) using premedication with ketorolac. Preemptive nitrous oxide administration has also shown an increase in the success of the IANB. Recently, ketorolac has been made available ...
journal_title:Journal of endodontics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.joen.2017.09.011
更新日期:2018-01-01 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::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
pub_type: 杂志文章
doi:10.1016/S0099-2399(89)80195-5
更新日期:1989-11-01 00:00:00