Abstract:
INTRODUCTION:The aim of this study was to compare the transportation and centering abilities of the ProGlider (PG; Dentsply-Sirona, Ballaigues, Switzerland), WaveOne Gold Glider (WOGG; Dentsply-Sirona), and R-Pilot (RP; VDW, Munich, Germany) file systems and the changes in the structure model index (SMI), surface area, and root canal volume (after creating the glide path in the mandibular first molar teeth's mesial canals with moderate curvature) using the micro-computed tomographic (micro-CT) method. METHODS:In the present study, 24 mandibular first molar teeth with 2 separate mesial canals and moderate (10°-20°) curvature were used. After scanning with micro-CT imaging before the procedure, the teeth were divided into 3 groups, PG, WOGG, and RP (n = 10/each group), followed by the glide path procedure. After the root canal preparation, changes in the root canals regarding the volume, surface area, SMI, transportation made by the files, and the change of their centering ability in the apical, middle, and coronal third were analyzed by micro-CT imaging. The data were statistically evaluated using 1-way analysis of variance and the Kruskal-Wallis test with a significance level set at 5% (P < .05). RESULTS:The WOGG and RP file systems showed better centering abilities at all thirds compared with the PG file system (P < .05). No significant difference was found in the apical third between the groups in terms of canal transportation degree (P > .05). However, in the WOGG and RP groups, less transportation was observed in the middle and coronal thirds compared with the PG group (P < .05). When the SMI changed, after the root canal preparation was compared, no significant differences were found between the groups (P > .05). Nevertheless, the changes in volume and surface area of the root canal in the WOGG and RP groups were significantly lower than in the PG group (P < .05). CONCLUSIONS:The WOGG and RP file systems caused similar levels of change in the root canal systems based on all parameters. Moreover, it was determined that the PG file system caused a significantly higher volume and surface area increase than the WOGG and RP file systems.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Aydın ZU,Keskin NB,Özyürek T,Geneci F,Ocak M,Çelik HHdoi
10.1016/j.joen.2019.02.012subject
Has Abstractpub_date
2019-06-01 00:00:00pages
791-796issue
6eissn
0099-2399issn
1878-3554pii
S0099-2399(19)30121-9journal_volume
45pub_type
杂志文章abstract:INTRODUCTION:The objective of this study was to investigate the expression of matrix metalloproteinases (MMPs) in apical periodontitis and during the periapical healing phase after root canal treatment. METHODS:Apical periodontitis was induced in dog teeth, and root canal treatment was performed in a single visit or b...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2009.10.030
更新日期:2010-02-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to evaluate and compare the resistance to cyclic fatigue of the new One Curve (OC) instrument in double (S-shaped) and single curvature canals compared with other nickel-titanium rotary instruments. METHODS:Size 25/.06 of OC, 2Shape (TS), Vortex Blue (VB), ProFile Vortex (PV), an...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2018.07.023
更新日期:2018-11-01 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::Mineral trioxide aggregate (MTA) is being advocated for vital pulp therapy. In the case of direct pulp capping, hemorrhage control is an important step on success, but little is known about the effect of MTA on pulpal bleeding. In addition, there has been a lack of information on the effect of MTA on smooth muscle con...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2007.03.007
更新日期:2007-07-01 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::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:It is important to develop an antimicrobial agent without any damage on dental pulp. In the present study, we examined whether pretreatment of bacterial lipopolysaccharides (LPS) with ozonated water (O(3)aq) improves LPS-induced responses of rat odontoblastic cell line, KN-3. METHODS:After the pretreatmen...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2009.01.016
更新日期:2009-05-01 00:00:00
abstract::Ninety extracted human teeth with a single canal and a large patent foramen were obturated by one of three methods after placement of a master gutta-percha cone and sealer. The apical seals were evaluated by ink penetration. Statistical analysis of the results indicated that the group obturated with the high-temperatu...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(89)80052-4
更新日期:1989-07-01 00:00:00
abstract:INTRODUCTION:The aim of this prospective, randomized, double-blind clinical trial was to evaluate the effect of a preoperative, single, oral dose of diclofenac potassium (DFK) on postoperative pain and rescue analgesic intake in patients with symptomatic irreversible pulpitis in mandibular molars treated in 1 visit. M...
journal_title:Journal of endodontics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.joen.2020.05.008
更新日期:2020-08-01 00:00:00
abstract:INTRODUCTION:The objective of this study was to evaluate the pH and calcium ion release of calcium hydroxide pastes associated with different substances. METHODS:Forty acrylic teeth with simulated root canals were divided into 4 groups according to the substance associated to the calcium hydroxide paste: chlorhexidine...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2009.05.009
更新日期:2009-09-01 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::The persistent presence of bacteria in the root canal system often leads to the failure of treatment. The aim of this study was to study the in vitro penetration of root dentinal tubules by bacteria. Bovine dentin was inoculated with a strain of Streptococcus sanguis, NCTC 7863; samples were taken at 10, 20, and 28 da...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(06)80460-7
更新日期:1993-06-01 00:00:00
abstract:INTRODUCTION:This study compared the accuracy of cone beam computed tomography (CBCT) scans made by five different systems in detecting vertical root fractures (VRFs). It also assessed the influence of the presence of root canal filling (RCF), CBCT slice orientation selection, and the type of tooth (premolar/molar) on ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2009.09.013
更新日期:2010-01-01 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::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:INTRODUCTION:The purpose of this study was to evaluate the effect of low-surface tension EDTA solutions on the push-out bond strength of resin-based sealer to young and old root canal dentin. METHODS:Root canals from 64 (n = 32 age <30 years old and n = 32 >60 years old) extracted, decoronized, single-rooted human tee...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2017.09.007
更新日期:2018-03-01 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::The cytotoxic effects of a new epoxy resin-based root canal sealer (AH-plus), together with those of two other commonly used endodontic sealers (AH26 and zinc oxide-eugenol), have been studied in vitro on a culture of human gingival fibroblasts. Cytotoxicity was assessed by direct incubation of sealers' extracts with ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200008000-00008
更新日期:2000-08-01 00:00:00
abstract:INTRODUCTION:The anatomy of the maxillary C-shaped molar has been the subject of several case reports although no true prevalence research has ever been conducted. The aim of this observational study was to evaluate and characterize the incidence of these morphologies using cone-beam computed tomographic (CBCT) technol...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2015.12.013
更新日期:2016-03-01 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::This study was carried out to investigate the effect of changes in tooth structure due to masticatory cycles on amalgam retrofillings performed to different cavity depths. Forty upper maxillary first molars were tested. In the obturated palatal root apical amalgam was inserted to different depths (1.5 and 3 mm). Eight...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(97)80169-0
更新日期:1997-10-01 00:00:00
abstract::The purpose of this study was to evaluate the strengthening effect of an internal resin bonding technique. One hundred central incisors were endodontically treated and divided equally into five groups. Group 1, without any cervical preparation and with access repaired with bonded resin, served as the positive control....
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(98)80108-8
更新日期:1998-04-01 00:00:00
abstract::The purpose of this study was to compare the flow of gutta-percha and Resilon (RealSeal; SybronEndo, Orange, CA) into lateral grooves and depressions in the apical 7 mm of a root canal by using warm vertical compaction. A split-tooth model was constructed with lateral grooves and depressions prepared at 1, 3, 5, and 7...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2007.02.017
更新日期:2007-06-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to evaluate the influence of anorganic bovine bone as a grafted biomaterial on newly formed bone and cementum in periapical regions after surgical endodontic treatment in cats. METHODS:After inducing apical periodontitis in 9 cats, root canal and surgical endodontic treatment...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2011.10.002
更新日期:2012-02-01 00:00:00
abstract::This study investigated the possibility of saliva recontamination occurring between the root canal wall and sealer through dentinal tubules exposed after the cementum was removed at the cervical level by root planing and treatment with citric acid. Thirty-four extracted human maxillary anterior teeth were randomly pla...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(96)80024-0
更新日期:1996-11-01 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::The purpose of this study was to compare intracanal bacterial reduction on teeth instrumented with 0.04 tapered nickel-titanium (NiTi) rotary instrumentation to bacterial reduction when using a stainless-steel K-file step-back technique using sterile saline irrigation. Forty-eight patients with apical periodontitis we...
journal_title:Journal of endodontics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/S0099-2399(98)80170-2
更新日期:1998-11-01 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:INTRODUCTION:This study evaluated the physicochemical, antimicrobial, and biological properties of white mineral trioxide aggregate (MTA) mixed with aqueous and propylene glycol extracts of Arctium lappa L. and Casearia sylvestris Sw. METHODS:The setting-time test was performed according to American Society for Testin...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2016.12.023
更新日期:2017-05-01 00:00:00
abstract:INTRODUCTION:The purpose of the study was to evaluate the effects of intracanal, intraoral, and extraoral cryotherapy on postoperative pain in molar teeth with symptomatic apical periodontitis. METHODS:A total of 100 patients were randomly distributed into 4 groups: control (without cryotherapy application), intracana...
journal_title:Journal of endodontics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.joen.2017.11.002
更新日期:2018-03-01 00:00:00