Abstract：
:Infection control guidelines recommend disinfection of extracted teeth in 10% formalin for 2 weeks before use. Although extracted teeth are routinely used for in vitro endodontic research, the potential influence of formalin has not been evaluated. The purpose of this study was to investigate the effect of formalin storage on the apical seal integrity of obturated canals. There were 100 single-rooted human teeth decoronated, accessed, and randomly divided into four groups. Group 1 was composed of specimens that were instrumented and obturated after extraction without storage in formalin. Groups 2, 3, and 4 were stored in formalin for 2, 4, and 8 weeks, respectively, before treatment. Canals were instrumented to a master apical file size #7 ProFile .04 Taper Series 29 and obturated with Obtura II thermoplasticized gutta-percha and Roth 801 sealer. The teeth were immersed in India ink, cleared, and the greatest extent of linear dye leakage was measured. Microleakage testing displayed significantly less microleakage after 2 and 4 weeks of formalin storage. Leakage measurements after 4 weeks of storage were 62.3% lower than nonfixed specimens. The 8-week storage group demonstrated lower dye penetration compared with the nonfixed group; however, the difference was not statistically significant. Within the scope of this study, storage of extracted teeth in formalin for 2 and 4 weeks resulted in a significant decrease in apical microleakage compared with nonfixed specimens.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
George SW,Pichardo MR,Bergeron BE,Jeansonne BGdoi
10.1016/j.joen.2006.04.009subject
Has Abstractpub_date
2006-09-01 00:00:00pages
869-71issue
9eissn
0099-2399issn
1878-3554pii
S0099-2399(06)00370-0journal_volume
32pub_type
杂志文章abstract：INTRODUCTION:The aim of this prospective study was to evaluate the postoperative pain that followed root canal treatments performed with a single-file reciprocating system on asymptomatic uniradicular necrotic teeth with and without foraminal enlargements (FEs). METHODS:Forty-six volunteers were randomly divided into ...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2015.09.018
更新日期：2016-01-01 00:00:00
abstract：:The choice of one-visit versus two-visit root canal therapy for necrotic teeth with apical periodontitis is a source of current debate. The primary objective of this randomized controlled clinical trial was to compare radiographic evidence of periapical healing after root canal therapy completed in one visit or two vi...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2007.12.015
更新日期：2008-03-01 00:00:00
abstract：:Cytotoxicity was compared between new root canal sealers (New A, New B, and New B-2) and conventional root canal sealers (AH26, Diaket, Canals, Tubi-Seal, and Sealapex). Dental pulp cells of rats, obtained through primary cell culture, were used. In the experiments with the freshly prepared sealers, the incorporation ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(89)80109-8
更新日期：1989-02-01 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：:Intracoronal bleaching of pulpless teeth with 30% hydrogen peroxide may result in external cervical root resorption. One of several suggested etiological factors associated with this complication is the pH of the bleaching materials. Because the available data on the pH values of bleaching materials were conflicting, ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)81988-6
更新日期：1991-08-01 00:00:00
abstract：INTRODUCTION:An accurate differential diagnosis of apical periodontitis (AP) and nasopalatine duct cyst (NPDC) should be established to define the best treatment for endodontically treated maxillary anterior teeth with apical periodontitis. Three-dimensional cone beam computed tomography (CBCT) images help to plan trea...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2010.11.022
更新日期：2011-03-01 00:00:00
abstract：:When dentin is planed by endodontic instruments, a smear layer forms. Whether this layer should be removed is unknown and controversial. This study was conducted to assess the effect of the smear layer on retention of bacteria using an in vitro root canal bacterial colonization model. Canals of 26 extracted human cani...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)81186-6
更新日期：1994-02-01 00:00:00
abstract：INTRODUCTION:The root canal treatment of a mandibular molar with aberrant canal configuration can be diagnostically and technically challenging. METHODS:This case report presents the clinical management of a mandibular first molar with three separate mesial canals including middle mesial canal, which was confirmed by ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2009.11.008
更新日期：2010-03-01 00:00:00
abstract：:A retrograde root-end cover with a special resin composite (Retroplast) combined with the dentin bonding agent Gluma (Bayer AG) has been used since 1984 by the authors. Its content of silver, added to promote radiopacity, has been found to lower the working time and storage stability of the composite and might cause d...
journal_title：Journal of endodontics
pub_type： 临床试验,杂志文章
doi：10.1016/S0099-2399(96)80082-3
更新日期：1996-09-01 00:00:00
abstract：:The treatment of an undeveloped (immature) tooth with a carious exposure has been reported extensively in the literature. The main objective of treatment is to provide vital pulp therapy to allow continued development of root dentin in the hope that the root will attain full maturity. A case report is presented that i...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200311000-00022
更新日期：2003-11-01 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:In a clinical situation, an apically resected tooth is often accompanied by a varying degree of periodontal bone loss. The purpose of this study was to assess the influence of apical root resection combined with periodontal bone loss on the biomechanical response of a single-rooted tooth. METHODS:A basic ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2014.11.011
更新日期：2015-03-01 00:00:00
abstract：:Historically, pulp-necrotizing agents were commonly used in endodontic treatments. They act quickly and devitalize the pulp within a few days. However, they are cytotoxic to gingiva and bone. If such an agent diffuses out of the cavity, it can readily cause widespread necrosis of gingiva and bone, which can lead to os...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/01.don.0000125881.18872.ef
更新日期：2004-10-01 00:00:00
abstract：INTRODUCTION:This in vitro study compared cone-beam computed tomography (CBCT) exam with different voxel sizes with digital periapical radiography in the detection of vertical root fractures in teeth with and without intracanal metallic posts. METHODS:Eighteen single-rooted human teeth were endodontically treated, pre...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2013.08.031
更新日期：2013-12-01 00:00:00
abstract：INTRODUCTION:The purpose of this prospective, randomized, single-blind crossover study was to evaluate the anesthetic efficacy of a combination palatal and buccal infiltration of the maxillary first molar. MATERIALS AND METHODS:Using a crossover design, 40 subjects received two sets of maxillary first molar infiltrati...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2011.01.005
更新日期：2011-04-01 00:00:00
abstract：:Removing posts from root canals prior to endodontic retreatment is often a challenge. The Gonon post removing system (Thomas Extracteur De Pivots; FFDM-Pneumat, Bourges, France) is safe and efficient and can be used for anterior, bicuspid, and even molar teeth. The Gonon system is illustrated with one clinical case. ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(89)80200-6
更新日期：1989-11-01 00:00:00
abstract：:A comparison of the microleakage of mineral trioxide aggregate (MTA) and a high copper admix amalgam (Valiant PhD) in root-end preparations was made using a fluid conductive device. Thirty-three bilaterally matched pairs of extracted, single-rooted teeth were prepared and obturated using lateral compaction of gutta-pe...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(98)80160-X
更新日期：1998-11-01 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：INTRODUCTION:The aim of this study was to investigate the number of roots and the morphology of the root canals of maxillary and mandibular premolars in a selected German population. METHODS:Randomly selected full-size cone-beam computed tomographic images were collected from 700 patients (45% men and 55% women, avera...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2017.03.044
更新日期：2017-09-01 00:00:00
abstract：:A molar-incisor malformation (MIM) is a newly reported type of dental anomaly that involves a characteristic root malformation in permanent first molars and deciduous second molars and a crown defect in permanent central incisors. This case report describes a nonsurgical root canal treatment of a MIM-affected molar by...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2015.11.004
更新日期：2016-04-01 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：:The aim of this study was to investigate the extent of calcium ion (Ca(2+)) removal on root dentin after treatment with 1.25% NaOCl, 2.5% NaOCl, 5.25% NaOCl, 2% chlorhexidine (CHX), 2% iodine potassium iodide (IKI), and MTAD in 3 immersion time periods. Extracted human mandibular premolars were bisected longitudinally...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2008.11.016
更新日期：2009-02-01 00:00:00
abstract：:The purpose of this in vitro study was to investigate the canal configuration types, and the prevalence and location of anatomical variations in the mesiobuccal (MB) and mesial roots of permanent maxillary and mandibular first molars after instrumentation. The number and the type of canals were determined before instr...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/01.don.0000145425.73364.91
更新日期：2005-05-01 00:00:00
abstract：INTRODUCTION:The purpose of this study was to evaluate the influence of pH that is due to setting reaction of Biodentine, glass ionomer cement (GIC), and intermediate restorative material (IRM) on transforming growth factor-β1 (TGF-β1) release and on the fibrin architecture of platelet-rich fibrin (PRF). METHODS:PRF w...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.02.009
更新日期：2016-05-01 00:00:00
abstract：:Plasminogen activator converts plasminogen to plasmin, and plasmin activates the latent matrix metalloproteinases. Tissue plasminogen activator (t-PA) is one of the important proteolysis factors present in human inflamed tissues. However, few studies reported on the mechanisms of tissue destruction via a t-PA proteoly...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200302000-00007
更新日期：2003-02-01 00:00:00
abstract：INTRODUCTION:This study aimed to compare the success rates of direct pulp capping (DPC) by using either ProRoot Mineral Trioxide Aggregate (MTA) or Biodentine in the cariously exposed permanent teeth of 6- to 18-year-old patients. Gray discoloration was also evaluated. METHODS:Fifty-nine cariously exposed permanent te...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2017.10.012
更新日期：2018-03-01 00:00:00
abstract：:Increased levels of interleukin-1 (IL)-1, tumor necrosis factor-alpha (TNF-alpha), IL-6, and prostaglandin E2 (PGE2) have been detected in inflamed pulp tissue. To gain further insight into the molecular pathogenesis of pulpitis, we investigated the effects of IL-1alpha or TNF-alpha and PGE2, either alone or in combin...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200203000-00013
更新日期：2002-03-01 00:00:00
abstract：INTRODUCTION:Many studies have investigated the morphology of the mandibular molar, but the prevalence of the middle mesial (MM) canal in the mesial root of the mandibular molar is still the subject of controversy. In addition, in previous literature, a true MM canal has not been clearly distinguished from an isthmus b...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2017.02.008
更新日期：2017-07-01 00:00:00
abstract：INTRODUCTION:Electronic working length measurement during root canal treatment in teeth with enlarged apical foramina is a challenge. The aims of this in vitro study were (1) to assess the influence of foramen widening on the accuracy of 5 different electronic foramen locators (EFLs) and (2) to compare the accuracy of ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2013.09.032
更新日期：2014-01-01 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
