Abstract：
:This study was aimed at comparing the cultivable microorganisms in canals with periapical radiolucencies with exposed and unexposed pulp space. Microbiological samples were taken and analyzed from 45 canals with exposed pulp space, and 43 canals with unexposed pulp space. The canal contents were analyzed by aerobic/anaerobic culture, and conventional identification techniques. There were 211 isolates of bacteria belonging to 28 genera and 55 species recovered from exposed canals. In the unexposed group, 185 isolates of bacteria were recovered, of which 54 species of 28 genera were identified. Among the four most common genera, Prevotella was significantly more common in the exposed group (51/211 in the exposed group versus 30/185 in the unexposed group) (p = 0.049), while there were no differences in prevalence of Actinomyces, Peptostreptococcus, and Campylobacter between two groups of canals. In addition, Fusobacterium nucleatum and Propionibacterium acne were significantly more common in the unexposed canals (p = 0.047 and p = 0.0051, respectively). Similarity in bacterial species in these two groups suggests that pulp space exposure may not be a significant factor in determining the type of bacteria present in infected canals.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Chu FC,Tsang CS,Chow TW,Samaranayake LPdoi
10.1097/01.don.0000148149.27636.9ckeywords:
subject
Has Abstractpub_date
2005-06-01 00:00:00pages
424-9issue
6eissn
0099-2399issn
1878-3554pii
S0099-2399(05)60845-Xjournal_volume
31pub_type
杂志文章abstract：:Patients with odontogenic cutaneous sinus tracts usually seek treatment from a physician instead of a dentist and the etiology is frequently misdiagnosed. This case report describes a patient who sought treatment from a dentist because of a history of a previous cutaneous swelling on the ipsilateral side of his cheek....
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/s0099-2399(06)80959-3
更新日期：1992-06-01 00:00:00
abstract：INTRODUCTION:The outcome of periapical surgery has been directly improved with the introduction of novel material formulations. The aim of the study was to compare the retrograde obturation quality of the following materials: calcium silicate (Biodentine; Septodont, Saint-Maur-des-Fosses, France), mineral trioxide aggr...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2017.09.022
更新日期：2018-05-01 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:Calcium hydroxide has been used as a traditional pulpotomy agent for a long time but has some disadvantages. iRoot BP Plus (Innovative Bioceramix Inc, Vancouver, Canada) is a newly developed, ready-to-use calcium silicate-based bioactive ceramic with excellent bioactivity and sealing ability. However, whet...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.12.010
更新日期：2020-03-01 00:00:00
abstract：:The aim of this study was to evaluate the time required by four different root canal medications coupled with the temporary filling material Cavit (ESPE, Seefeld, Germany) to prevent penetration of bacteria into the root canal. There were 145 roots prepared in a standardized manner. Four groups with 15 samples each we...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2005.10.023
更新日期：2006-02-01 00:00:00
abstract：:Amalgam cores with cemented dowels are commonly used to restore endodontically treated teeth. These restorations were widely studied for their mechanical properties; however, less is known about their sealing ability. The effect of the cement type used for the dowel and that of a bonding agent application were studied...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200104000-00015
更新日期：2001-04-01 00:00:00
abstract：:Endodontic therapy has played an important role in maintaining the integrity of the natural dentition as a fully functional and esthetic masticatory apparatus. Although the sealing of the root canal system is usually accomplished by the conservative endodontic approach, cases which have failed or which involve perfora...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)81793-0
更新日期：1991-10-01 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：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 most striking disadvantage of most apex locators is that if there are electrolytes in the canal the meter shows a reading which is too short or sometimes the measurement itself becomes impossible. To overcome this drawback, a new concept for electrically measuring the root canal length has been developed. The devi...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)80053-1
更新日期：1994-03-01 00:00:00
abstract：:This study evaluated the degree of conversion of one dual-cured resin cement when used to lute fiber posts with different translucencies. To measure the degree of conversion, polyvinylsiloxane molds were prepared to simulate root canals. The posts, Aestheti-Post or Light-Post, were cemented in these molds and, after p...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2006.11.015
更新日期：2007-03-01 00:00:00
abstract：INTRODUCTION:The objective of this study was to investigate the association between chronic apical periodontitis (CAP) and low-birth-weight preterm births (LBWPB). METHODS:Sixty-three women in postpartum period were included in this case-control study. The case group consisted of mothers of LBWPB infants (n = 33), and...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2014.11.018
更新日期：2015-03-01 00:00:00
abstract：INTRODUCTION:It has been widely accepted that dental pulp stem cells (DPSCs), which are a class of self-renewal and differentiation potential of adult stem cells, play an important role in the repair procession of pulp's inflammation. We investigated whether tumor necrosis factor alpha (TNF-α) could induce the prolifer...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2015.02.020
更新日期：2015-07-01 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：: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：:The aim of this study was to determine the relationship between histologic and radiologic signs of inflammation in human root-filled teeth. In addition, other factors with possible importance for apical inflammation were assessed. Fifty-three block sections of root-filled teeth were gathered from human cadavers. The b...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200402000-00003
更新日期：2004-02-01 00:00:00
abstract：:This case-control study sought to identify variables predictive of subsequent root canal therapy (RCT) in teeth receiving full coverage restorations. The University of North Carolina School of Dentistry's computerized treatment database was used to identify all patients receiving a single-unit crown on a nonendodontic...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2005.11.001
更新日期：2006-08-01 00:00:00
abstract：:A method of using osseointegrated implants as an alternative treatment modality for transverse root fractures near the osseous crest is presented. A 15-mm Branemark implant was placed immediately after extraction of a maxillary central incisor with transverse root fracture. Five months after stage I surgery, the impla...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(98)80096-4
更新日期：1998-02-01 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：INTRODUCTION:The aim was to assess the association of inducible costimulator (ICOS) and ICOS ligand with bone destruction in apical periodontitis (AP). METHODS:Specimens from patients presenting with AP were obtained during apicoectomy and subjected to histopathologic analysis and molecular assessment of ICOS/ICOS lig...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.03.018
更新日期：2019-07-01 00:00:00
abstract：:With all the potential for endodontic success, the fact remains clinicians are confronted with posttreatment endodontic disease. When the elected treatment plan is endodontic nonsurgical retreatment, then the goal is to access the pulp chamber and remove materials from the root canal space and if present, address defi...
journal_title：Journal of endodontics
pub_type： 杂志文章,评审
doi：10.1097/01.don.0000145033.15701.2d
更新日期：2004-12-01 00:00:00
abstract：INTRODUCTION:Pulp capping materials allow healing of injured pulp with a layer of reparative dentin. Glucose is needed to cure the injured area. Glucose is transported by glucose transporter (Glut) 2 and Glut4, which are transmembrane proteins that act as gatekeepers. We hypothesized that the transport of glucose via G...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.10.003
更新日期：2020-01-01 00:00:00
abstract：INTRODUCTION:This study aimed to evaluate the frequency of dentinal microcracks observed after root canal preparation with 2 reciprocating and a conventional full-sequence rotary system using micro-computed tomographic analysis. METHODS:Thirty mesial roots of mandibular molars presenting a type II Vertucci canal confi...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2014.02.019
更新日期：2014-09-01 00:00:00
abstract：:Retrograde (or apical/periapical) peri-implantitis (RPI) presents with radiographic signs of bone loss at the periapical area of endosteal implants and may also present with clinical signs of abscess formation or a sinus tract traceable to the implant periapex. The lesion may form days up to several years after the in...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.01.002
更新日期：2019-05-01 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:This study reports the antimicrobial effect of photodynamic therapy (PDT) combined with endodontic treatment in patients with necrotic pulp infected with microflora resistant to a previous antibiotic therapy. METHODS:Thirty anterior teeth from 21 patients with periapical lesions that had been treated with...
journal_title：Journal of endodontics
pub_type： 临床试验,杂志文章
doi：10.1016/j.joen.2010.06.001
更新日期：2010-09-01 00:00:00
abstract：:Taurodontism is a morphoanatomical change in the shape of a tooth, which usually occurs in multirooted teeth. An enlarged body and pulp chamber, as well as apical displacement of the pulpal floor, are characteristic features. Endodontic treatment of a taurodont tooth is challenging, because it requires special care in...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200305000-00009
更新日期：2003-05-01 00:00:00
abstract：INTRODUCTION:The present study quantitatively assessed tissue regeneration after regenerative endodontic procedures (REPs) with 2 different apical preparation sizes in mature teeth using magnetic resonance imaging (MRI). METHODS:Eighteen maxillary anterior mature necrotic teeth with periapical lesions were selected fo...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2020.01.026
更新日期：2020-05-01 00:00:00
abstract：:The purpose of this study was to quantify the amount of remaining gutta-percha/sealer after retreatment of post space prepared teeth obturated with a lateral condensation technique or with Thermafil with plastic and metallic carrier. The time required for retreatment was also recorded. Forty-five extracted mandibular ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/s0099-2399(06)80019-1
更新日期：1994-01-01 00:00:00
abstract：:The purpose of this study was to compare the wicking propensity of multifilament sutures. Dexon II, Vicryl, and black silk suture (BSS) were dipped in saline or soaked for 48 h, then suspended on a microscope slide. Fluorescein isothiocyanate-dextran (FITC-D) was placed at the suture mid points, and its movement was o...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/01.don.0000121617.67923.05
更新日期：2004-09-01 00:00:00
