Abstract:
INTRODUCTION:The objective of this ex vivo study was to compare the efficacy of passive ultrasonic irrigation (PUI) versus a new activation system using reciprocating motion (EasyClean [EC]; Easy Equipamentos Odontológicos, Belo Horizonte, Brazil) to remove debris from the root canal walls at 6 predetermined apical levels using environmental scanning electron microscopy. METHODS:Mesiobuccal root canals of 10 mandibular molars were prepared with a 30/.05 final instrument. The specimens were embedded in flasks containing heavy body silicone, cleaved longitudinally, and 6 round indentations were made into the apical region of the buccal half at 1-mm intervals. The same specimens were used to prepare a blank control group (no debris), a negative control group (completely covered by debris), and 2 experimental groups: PUI and irrigation with reciprocating activation. Standardized images of the indentations were obtained under environmental scanning electron microscopy and assessed by 2 examiners. The amount of debris was then classified using a 4-category scoring system. The kappa test was applied to determine interexaminer agreement, whereas the Kruskal-Wallis, Dunn, and Friedman tests were used to compare scores. RESULTS:The EC group had results statistically similar to those of the blank control group for all 6 root levels examined. The PUI group had results statistically similar to those of the negative control group for the 3 most apical levels and similar to those of the blank control group for the 3 most cervical levels. CONCLUSIONS:Activating the irrigant with a reciprocating system (EC) promoted more effective debris removal from the more apical regions of the root canal when compared with PUI.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Kato AS,Cunha RS,da Silveira Bueno CE,Pelegrine RA,Fontana CE,de Martin ASdoi
10.1016/j.joen.2016.01.016subject
Has Abstractpub_date
2016-04-01 00:00:00pages
659-63issue
4eissn
0099-2399issn
1878-3554pii
S0099-2399(16)00068-6journal_volume
42pub_type
杂志文章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
pub_type: 杂志文章
doi:10.1016/s0099-2399(97)80301-9
更新日期:1997-07-01 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::Endodontic microsurgery has reduced the degree of treatment trauma compared with traditional apical surgery and further increased the success rate of natural teeth retention. However, when root apices of the mandibular posterior teeth are far from the buccal cortical bone surface or near to the inferior alveolar nerve...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2020.07.033
更新日期:2020-08-11 00:00:00
abstract::The antimicrobial effect of RC-Prep and its components--10% urea peroxide, 15% EDTA, and glycol--were evaluated individually, in vitro, within dentinal tubules. Standardized bovine incisor root specimens that had been infected with either Staphylococcus aureus or Streptococcus peltzer were incubated with each agent fo...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(99)80296-9
更新日期:1999-12-01 00:00:00
abstract:INTRODUCTION:Speed of injection may affect the solution spread in the pterygomandibular space. It was hypothesized that speed of injection will affect the anesthetic efficacy of inferior alveolar nerve block (IANB) in patients with symptomatic irreversible pulpitis. METHODS:Fifty-nine adult volunteers who were activel...
journal_title:Journal of endodontics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.joen.2012.08.006
更新日期:2012-12-01 00:00:00
abstract:INTRODUCTION:The occurrence of multiple injuries of the same tooth is extremely rare. This case report describes the treatment in a midroot and complicated crown-root-fractured permanent incisor that remained untreated for 4 years after the accident. METHODS:The tooth was treated by delayed partial pulpotomy using cal...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2010.03.036
更新日期:2010-07-01 00:00:00
abstract::The aim of this study was to investigate the correlation between endodontic clinical signs and symptoms and the presence of Porphyromonas gingivalis, Treponema denticola, and Tannerella forsythia or their association by nested polymerase chain reaction assay. Microbial samples were taken from 50 cases with necrotic pu...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2007.05.017
更新日期:2007-09-01 00:00:00
abstract::In the rat, perforations of maxillary molars were created and treated with either tricalcium phosphate (Synthograft) or Cavit. At four time intervals (1 day, 1 wk, 2 wk, and 1 month), four evaluative factors (inflammation, bone resorption, cementum and dentin resorption, and epithelial proliferation) were analyzed and...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(89)80171-2
更新日期:1989-09-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to determine the extent of disinfection mediated by 2 concentrations of sodium hypochlorite for bacteria-laden dentin wall of a root canal. METHODS:A dual-species film, Enterococcus faecalis and Porphyromonas gingivalis, was cultivated on root canal dentin for 7 days. The canal w...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.09.045
更新日期:2014-06-01 00:00:00
abstract:INTRODUCTION:Culture-independent studies have revealed a broad spectrum of oral bacterial taxa that may be associated with disease. This study investigated the prevalence of three new candidate oral pathogens: Prevotella baroniae, Prevotella multisaccharivorax, and as-yet-uncultivated Bacteroidetes oral clone X083 in p...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2009.05.033
更新日期:2009-10-01 00:00:00
abstract:INTRODUCTION:A ferrule on anterior endodontic-treated teeth has been evaluated using clinical trials, in vitro tests, and finite element analysis (FEA). The patient-specific FEA with a nonuniform ferrule and nonlinear contact biting load associated with clinical validation can be used to predict failure. METHODS:A pat...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2017.04.024
更新日期:2017-09-01 00:00:00
abstract::Vascular casts of cat premolar pulps in various stages of growth were made by injection of low-viscosity resin into the pulpal blood vessels. Examination under a scanning electron microscope revealed that, in the young pulp, the main arterioles ascend in the center of the pulp and venules run along the side of the roo...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(89)80028-7
更新日期:1989-10-01 00:00:00
abstract::This study highlighted the characteristics and distribution of cracked tooth syndrome (CTS) and the associated factors in adult attendees in the University of Nigeria Teaching Hospital. Three hundred seventy patients aged 18 years to 77 years with CTS-like conditions were included and studied over 12 months. The follo...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2008.12.011
更新日期:2009-03-01 00:00:00
abstract:INTRODUCTION:This article reports on the feasibility of conducting a large-scale endodontic prospective cohort study in The National Dental Practice-Based Research Network. This study was designed to measure pain and burden associated with initial orthograde root canal therapy (RCT) and to explore potential prognostic ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2012.08.002
更新日期:2012-11-01 00:00:00
abstract:INTRODUCTION:Revascularization is a valuable treatment in immature necrotic teeth that allows the continuation of root development. In this article we describe successful revascularization treatment of 2 necrotic immature first mandibular molars. METHODS:The clinical and radiographic examinations showed extensive coro...
journal_title:Journal of endodontics
pub_type: 杂志文章,评审
doi:10.1016/j.joen.2011.01.011
更新日期:2011-04-01 00:00:00
abstract:INTRODUCTION:This study aimed to evaluate the precision of electronic apex locators (EALs) in locating the apical constriction (AC) during a root canal treatment compared with a histologic evaluation of the AC as well as the effects of possible influencing factors by means of a systematic review of the literature and m...
journal_title:Journal of endodontics
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.joen.2015.08.012
更新日期:2015-11-01 00:00:00
abstract::A case study is presented that described an acute flare-up of a tooth following a vital bleaching procedure. The case illustrates (a) the importance of assessing the pulpal and periradicular status of a tooth prior to any vital bleaching procedure; and (b) the alteration of the local adaptation syndrome by the bleachi...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)80488-7
更新日期:1992-07-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to compare the accuracy of the Root ZX II Apex Locator (RZX), the Elements Apex Locator (ELE), and the Precision Apex Locator (PAL). METHODS:Forty single-rooted extracted teeth were decoronated and the root canals coronally flared. Actual canal lengths were determined by inse...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2009.09.016
更新日期:2010-02-01 00:00:00
abstract::The apical sealing ability of amalgam, cold-burnished gutta-percha, amalgam with cavity varnish, and SuperEBA cement was evaluated in extracted human teeth. For each experimental group, the roots of 20 single-rooted teeth were sectioned from their crowns. Canals were cleaned, shaped, and obturated with vertically cond...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(89)80132-3
更新日期:1989-03-01 00:00:00
abstract:INTRODUCTION:Vertical root fractures (VRFs) are among the most frequent causes of tooth loss, mainly of endodontically treated teeth. However, very few data is available about the occurrence of VRFs following apical surgery. METHODS:Patient charts from 864 patients with 1058 teeth treated with apical surgery (Septembe...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2020.10.012
更新日期:2021-02-01 00:00:00
abstract:INTRODUCTION:The purpose of this in vivo study was to evaluate the accuracy of small-volume cone-beam computed tomographic (CBCT) imaging compared with conventional periapical radiography (CPR) in the diagnosis of vertical root fractures (VRFs) using exploratory surgery as the reference standard. METHODS:Eighty-two de...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2020.04.015
更新日期:2020-08-01 00:00:00
abstract::The diameter of nine sizes of three brands of endodontic spreaders was measured at D1 and D16 and compared with corresponding sizes of six brands of accessory gutta-percha cones. Two evaluators independently measured 20 randomly selected samples of each size of finger spreader and accessory gutta-percha cone. A standa...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(07)80153-1
更新日期:1991-01-01 00:00:00
abstract::Pulp revascularization is a promising procedure for the treatment of adolescents' immature permanent teeth with necrotic pulp and/or apical periodontitis. However, the ability to successfully perform pulp revascularization in a middle-aged patient remains unclear. A 39-year-old woman was referred for treatment of teet...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2015.04.022
更新日期:2015-09-01 00:00:00
abstract::In the past, measurement of microleakage has been based on measurement of dye or radioactive isotope penetration. A method has been developed to allow electronic monitoring of microflow in the same specimen over a period of time. This method was used to compare previously reported retrograde materials with an amalgam/...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)80072-5
更新日期:1994-11-01 00:00:00
abstract:INTRODUCTION:Candida in endodontic infections has been investigated in a large number of studies, but its role as an endodontic pathogen is still debatable. The aim of this study was to systematically review the literature on the prevalence of Candida species in root canal infections. METHODS:Extensive literature rese...
journal_title:Journal of endodontics
pub_type: 杂志文章,meta分析
doi:10.1016/j.joen.2018.07.016
更新日期:2018-11-01 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
pub_type: 杂志文章
doi:10.1016/S0099-2399(97)80403-7
更新日期:1997-11-01 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 aim of this study was to evaluate the effect of calcium hydroxide (CH) and antibiotic pastes, including a mixture of metronidazole and ciprofloxacin, with and without minocycline or cefaclor, on the dislocation resistance of mineral trioxide aggregate (MTA) to root dentin. METHODS:Eighty single-rooted...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2014.08.018
更新日期:2014-12-01 00:00:00
abstract::Polymerase chain reaction (PCR) followed by reverse dot blot was used to detect Enterococcus faecalis leakage through mineral trioxide aggregate (MTA) apical obturations of pulpless teeth with open apices. Prepared root canals of 34 extracted teeth were given a standard apical foramen opening and received orthograde a...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/01.don.0000128749.50151.24
更新日期:2004-12-01 00:00:00
abstract:INTRODUCTION:Platelet-rich plasma (PRP) has been widely used in regenerative dentistry for over 2 decades. Nevertheless, previous studies have shown that its growth factor content is released over a short time period, and the application of anticoagulants limits its regenerative potential. Therefore, a second-generatio...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2019.04.002
更新日期:2019-08-01 00:00:00