Abstract:
INTRODUCTION:The aim of this study was to assess 2 cone-beam computed tomographic systems on the detection of artificially induced vertical root fractures (VRFs) and artifact intensity using birooted teeth restored with different intracanal materials. METHODS:The sample consisted of 20 extracted birooted premolars. Root fracture was induced in half of the sample. Seven intracanal material combinations were used in each tooth, 1 at a time: unrestored, gutta-percha, a buccal root with gutta-percha and a lingual root with a fiberglass post, a buccal root with gutta-percha and a lingual root with a metal core fiberglass post, fiberglass posts, metal core fiberglass posts, and NiCr posts. Cone-beam computed tomographic scans were acquired using CS 9000 3D (Carestream Dental Rochester, NY) and OP300 (Instrumentarium Dental Inc, Tuusula, Finland) units. Exposure parameters were fixed at 90 kV and 8 mA. The voxel size and field of view were set at 0.085 mm and 5 × 5 cm for OP300 and 0.076 mm and 5 × 3.75 cm for CS 9000, respectively. Two observers assessed all images using a 5-point confidence scale for VRF detection and a 4-point score for artifact interference. The sensitivity, specificity, accuracy, and area under the receiver operating characteristic curve were compared using 2-way analysis of variance and the Tukey test (α = 0.05). Artifact interference was evaluated by descriptive statistics and the chi-square test. RESULTS:There were significant differences between scanners (P > .05) and among the different intracanal material groups (OP300) (P < .05) for specificity. When a metal post was present in both roots, severe artifact interference was observed in all images. CONCLUSIONS:CS 9000 3D presented better performance than OP300 on VRF detection of endodontically treated teeth. Unrestored teeth and teeth filled with fiberglass posts were considered the groups with the lowest artifact interference and the highest VRF detection results.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Marinho Vieira LE,Diniz de Lima E,Peixoto LR,Oliveira Pinto MG,Sousa Melo SL,Oliveira ML,Rovaris Silva K,Bento PM,Pita de Melo Ddoi
10.1016/j.joen.2019.10.028subject
Has Abstractpub_date
2020-02-01 00:00:00pages
264-270issue
2eissn
0099-2399issn
1878-3554pii
S0099-2399(19)30837-4journal_volume
46pub_type
杂志文章abstract:INTRODUCTION:The purpose of this article was to compare the cyclic fatigue resistance of Reciproc and Reciproc Blue files (VDW GmbH, Munich, Germany) that were used to prepare root canals of mandibular molar teeth with or without a glide path. METHODS:Sixty Reciproc R25 and 60 Reciproc Blue R25 files were used. The Re...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2018.03.004
更新日期:2018-06-01 00:00:00
abstract:INTRODUCTION:The purpose of the present study was to evaluate the thickness and the anatomic characteristics of the Schneiderian membrane and cortical bone using limited cone beam computed tomography (CBCT) scannning in patients referred for planning of apical surgery of maxillary molars. METHODS:This controlled study...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2011.09.023
更新日期:2012-01-01 00:00:00
abstract::Various classes of immunoglobulins have been found in human periapical lesions. The specificity of secreted antibodies against antigens egressing from the root canal system has yet to be thoroughly investigated. The purpose of this study was to test the specificity of antibodies present in human periapical lesions. Hu...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)81923-0
更新日期:1991-05-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to determine the variations in root canal length (RCL) occurring during endodontic treatment stages (initial, preflared, and concluded) and correlate them with the accuracy of Root ZX II (RZX). METHODS:After coronal access, 26 mandibular molars had the apical foramen of the 52 me...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2016.07.022
更新日期:2016-11-01 00:00:00
abstract:INTRODUCTION:The aim of this retrospective study was to evaluate the outcome of endodontic microsurgery and to examine prognostic factors related to healing. METHODS:The clinical records of all patients who had undergone endodontic microsurgery from 1997-2003 at the National Dental Centre of Singapore were examined. T...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2014.04.005
更新日期:2014-08-01 00:00:00
abstract::Twenty-one teeth with clinically asymptomatic periapical pathosis (class 3) were extracted and the isolation, identification, and localization of bacteria in the root apex were examined. Mixtures involving several bacteria were isolated from more than 60% of the cases. Scanning electron microscopy revealed bacterial m...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(07)80216-0
更新日期:1990-11-01 00:00:00
abstract::Pulp regeneration is a biologic process occurring under specific circumstances. An endodontic treatment modality to accomplish pulp regeneration has emerged based on the response of undifferentiated cells that are often referred to as stem cells. The treatment itself is currently empirical based on clinicians' thought...
journal_title:Journal of endodontics
pub_type: 杂志文章,评审
doi:10.1016/j.joen.2014.01.017
更新日期:2014-04-01 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::This study investigated the sealing properties of cold laterally compacted gutta percha and Thermafil applied over different apically fractured rotary nickel-titanium files. Extracted human premolars were prepared by using ProTaper (Dentsply-Maillefer, Ballaigues, Switzerland) or ProFile (Dentsply-Maillefer) systems (...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2007.10.023
更新日期:2008-02-01 00:00:00
abstract::The objective of this study was to assess and compare canal blockages and apical extrusion of dentin debris during canal shaping with eight preparation techniques. A total of 208 canals in extracted human teeth were prepared by one operator using one type of file. The techniques included were standardized, stepback wi...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(06)80443-7
更新日期:1995-03-01 00:00:00
abstract:INTRODUCTION:This study aimed to investigate the roles of ephrinB2 in stabilizing vascularlike structures generated by stem cells from apical papilla (SCAPs) and human umbilical vein endothelial cells (HUVECs). METHODS:HUVECs were seeded alone or with SCAPs concurrently or 12 hours later. Angiogenesis and ephrinB2 pho...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2016.05.012
更新日期:2016-09-01 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: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::Porphyromonas endodontalis (formerly Bacteroides endodontalis) is a black-pigmented anaerobic Gram-negative rod which is associated with endodontal infections. It has been isolated from infected dental root canals and submucous abscesses of endodontal origin. The presence of P. endodontalis in infected dental root can...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(06)80843-5
更新日期:1992-09-01 00:00:00
abstract:INTRODUCTION:The aims of this study were to evaluate the vertical and horizontal relationships between the maxillary sinus floor (MSF) and the root apices of maxillary posterior teeth with various root configurations and the distance from the root apex to the MSF and the buccal cortical plate. METHODS:Serial axial, co...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2015.08.011
更新日期:2015-11-01 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: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:This clinical study evaluates the effect of ultrasonic root-end preparations on dentinal defect creation and propagation. METHODS:Eighty-four teeth were treated with periapical microsurgery using a modern microsurgical protocol in a private practice setting. The root apices were resected and inspected for...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2016.07.016
更新日期:2016-10-01 00:00:00
abstract:INTRODUCTION:The purpose of this prospective, randomized controlled trial was to evaluate the healing outcomes of platelet-rich fibrin (PRF) in periapical surgeries involving apicomarginal defects and to compare these results with surgeries not using any guided tissue regeneration techniques. METHODS:Thirty patients w...
journal_title:Journal of endodontics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.joen.2015.04.004
更新日期:2015-07-01 00:00:00
abstract:INTRODUCTION:We aimed to compare the antimicrobial efficacy of chlorhexidine (CHX) and sodium hypochlorite (NaOCl), 2 irrigants routinely used in root canal therapy of permanent teeth. METHODS:Electronic databases, including PubMed, EMBASE, Web of Science, and Cochrane Library, were searched for randomized controlled ...
journal_title:Journal of endodontics
pub_type: 杂志文章,meta分析
doi:10.1016/j.joen.2020.05.002
更新日期:2020-08-01 00:00:00
abstract::The cytotoxicity of four different calcium hydroxide-based root canal sealers (Sealapex, Apexit, CRCS, and Endoflas FS) was tested using human gingiva fibroblasts. The fibroblasts were acquired from the attached gingiva of apparently healthy patients. The sealers were allowed to set for 24 and 48 h before being covere...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)81309-9
更新日期:1992-03-01 00:00:00
abstract:INTRODUCTION:This systematic review and meta-analysis investigated evidence to support whether apical periodontitis (AP) can modify the systemic levels of inflammatory markers (IM) in humans. METHODS:The MEDLINE, Embase, Cochrane, and PubMed databases were searched between 1948 and 2012, with no language restriction. ...
journal_title:Journal of endodontics
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.joen.2013.06.014
更新日期:2013-10-01 00:00:00
abstract::The objective of this study was to compare the sealing ability of ActiV GP/glass ionomer (GI) sealer (Brasseler USA, Savannah, GA), Resilon/Epiphany (Pentron Clinical Technologies, Wallingford, CT), and gutta-percha (GP)/AH Plus (Dentsply Maillefer, Tulsa, OK). Seventy-three human single-rooted teeth were randomly div...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2008.03.006
更新日期:2008-06-01 00:00:00
abstract::The aim of this study was to investigate the cytotoxic and nitric oxide (NO)-inducing effects of bismuth oxide (Bi(2)O(3))-containing Portland cement (BPC) on human dental pulp cells. We also assessed whether heme oxygenase-1 (HO-1) is involved in BPC-induced cytotoxicity in dental pulp cells. Cytotoxicity and NO prod...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2007.07.012
更新日期:2007-11-01 00:00:00
abstract:INTRODUCTION:This study evaluated the biocompatibility of 5 and 10 μg/mL LL-37 in vitro and its effect on the differentiation of human dental pulp stem cells (DPSCs) into odontoblast-like cells. METHODS:Cell viability, genotoxicity, nitric oxide production, cell cycle, dentine sialophosphoprotein (DSPP) production, an...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2017.08.010
更新日期:2017-12-01 00:00:00
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::Calcium hydroxide is the "gold standard" endodontic medication, but it may fail to eliminate certain facultative bacteria and yeasts found in root canal systems. In this study, standardized bovine dentin blocks infected with Enterococcus faecalis were treated with an aqueous calcium hydroxide or bioactive glass S53P4 ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200404000-00009
更新日期:2004-04-01 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
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:INTRODUCTION:Mineral trioxide aggregate (MTA) has been used successfully for perforation repair, vital pulpotomies, and direct pulp capping. However, little is known about the interactions between MTA and glass ionomer cement (GIC) in final restorations. In this study, 2 null hypotheses were tested: (1) GIC placement t...
journal_title:Journal of endodontics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.joen.2012.04.013
更新日期:2012-08-01 00:00:00