Abstract:
:The aim of this in vitro study was to investigate the effect of the smear layer on apical microleakage in teeth obturated with mineral trioxide aggregate (MTA). Fifty single-rooted central maxillary teeth were used in this study. All teeth were instrumented to size 60 by using the step-back technique. The selected teeth were randomly divided into 2 groups (n = 20). In the first group (smear [+]), the teeth were irrigated with only NaOCl (5.25%). In the second group (smear [-]), the teeth were irrigated with ethylenediaminetetraacetic acid (EDTA) (17%) and NaOCl (5.25%) to remove the smear layer. The teeth were then filled with MTA. The computerized fluid filtration method was used for evaluation of apical microleakage. The quantitative apical leakage of each tooth was measured after 2, 30, and 180 days. Statistical analysis was done with the Mann-Whitney U and Wilcoxon signed ranks tests. At the end of this study there was no difference in 2 days between the groups, but removal of the smear layer caused significantly more apical microleakage than when the smear layer was left intact for 30 and 180 days (P < .005). Within the constraints of this study it can be concluded that the apical microleakage of MTA is less when the smear layer is present than when it is absent.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Yildirim T,Oruçoğlu H,Cobankara FKdoi
10.1016/j.joen.2008.08.022subject
Has Abstractpub_date
2008-12-01 00:00:00pages
1537-40issue
12eissn
0099-2399issn
1878-3554pii
S0099-2399(08)00746-2journal_volume
34pub_type
杂志文章,随机对照试验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::The purpose of this investigation was to compare the antimicrobial effect of MTAD (a mixture of a tetracycline isomer, an acid, and a detergent) with that of NaOCl with and without EDTA. Eighty-five extracted human teeth were contaminated with Enterococcus faecalis for 4 weeks. After biomechanical instrumentation usin...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200309000-00008
更新日期:2003-09-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to combine multiple displacement amplification and checkerboard DNA-DNA hybridization to qualitatively and quantitatively evaluate the microbiota present in infections refractory to endodontic treatment. METHODS:The subjects of this study were 40 patients presenting with peri...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2016.05.014
更新日期:2016-08-01 00:00:00
abstract:INTRODUCTION:Elucidating the microbial ecology of endodontic infections (EIs) is a necessary step in developing effective intracanal antimicrobials. The aim of the present study was to investigate the bacterial composition of symptomatic and asymptomatic primary and persistent infections in a Greek population using hig...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2015.03.010
更新日期:2015-08-01 00:00:00
abstract::Osteoradionecrosis (ORN) of the jaw is considered the most severe long-term adverse effect that can occur in radiation therapy patients. Teeth extractions and dental diseases are the main risk factors for ORN in irradiated patients. The aim of this case series was to evaluate the outcome of primary root canal treatmen...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2019.12.005
更新日期:2020-04-01 00:00:00
abstract:INTRODUCTION:The aim was to present a novel surgical technique using virtually preplanned 3-dimensional (3D)-printed templates for guided osteotomies. These were to ensure atraumatic uncovering of a severely impacted donor tooth including guided drilling of the recipient alveolus followed by a secure autotransplantatio...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2020.07.024
更新日期:2020-07-29 00:00:00
abstract:INTRODUCTION:This study aimed at evaluating the bond strength to root dentin of 2 mineral trioxide aggregate (MTA)-based sealers (Endo-CPM sealer and MTA Fillapex) and of 1 epoxy resin-based sealer (AH Plus sealer). METHODS:Forty-five extracted human teeth with single roots were prepared by using the step-back techniq...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2011.10.018
更新日期:2012-02-01 00:00:00
abstract::The inferior alveolar nerve is sometimes affected by periapical pathoses and mandibular cysts. However, mandibular intraosseous lesions have not been reported to disturb the lingual nerve. A case of simultaneous paresthesia of the right lingual nerve and the right inferior alveolar nerve is presented. The possible mec...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/01.don.0000158011.64829.7b
更新日期:2005-10-01 00:00:00
abstract:INTRODUCTION:Calcium hydroxide (Ca[OH]2) is a widely used interappointment dressing, but its antibacterial property is compromised by dentin. Hence, the addition of chlorhexidine (CHX) with Ca(OH)2 has been proposed. However, the antimicrobial efficacy of this mixture compared with Ca(OH)2 alone is currently still deba...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2016.01.020
更新日期:2016-05-01 00:00:00
abstract::The cleaning capacity of manual and rotary instrumentation techniques in mesial-distal flattened canals was studied by morphometric analysis. Twenty human mandibular incisors were divided into two groups of 10 teeth each: group 1, crown-down technique with rotary instrumentation using ProFile .04; group 2, crown-down ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200205000-00004
更新日期:2002-05-01 00:00:00
abstract:INTRODUCTION:Newer antibacterial alternatives such as chitosan nanoparticles (CSnps) and photodynamic therapy (PDT) have been investigated to achieve effective root canal disinfection. The current study aims to assess the effect of various tissue inhibitors such as dentin, dentin matrix, pulp tissue, bacterial lipopoly...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2012.05.006
更新日期:2012-09-01 00:00:00
abstract::Ultrasonic instruments are a valuable asset for removing intraradicular posts from root canals before nonsurgical endodontic therapy. The purpose of this study was to evaluate the relative efficacy of post removal by ultrasonic and sonic devices. Fifty extracted teeth were instrumented and obturated. The canals were p...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)80044-0
更新日期:1994-10-01 00:00:00
abstract::It is a general belief that large cyst-like periapical lesions and apical true cysts caused by root canal infection are less likely to heal after nonsurgical root canal therapy. Nevertheless, there is no direct evidence to support this assumption. A large cyst-like periapical lesion or an apical true cyst is formed wi...
journal_title:Journal of endodontics
pub_type: 杂志文章,评审
doi:10.1016/j.joen.2009.02.012
更新日期:2009-05-01 00:00:00
abstract:INTRODUCTION:More information regarding the ability of single files to maintain the original canal position is required before adopting a single-file approach to cleaning and shaping. This study compares apical transportation in curved root canals when instrumenting with a single WaveOne (WO) file (Dentsply Tulsa Denta...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.09.021
更新日期:2014-05-01 00:00:00
abstract:INTRODUCTION:Mixtures of clodronate with sodium hypochlorite (NaOCl) better maintain free available chlorine (FAC) than etidronate-hypochlorite mixtures. This research aimed to compare organic tissue dissolution and residual FAC between clodronate and etidronate mixtures. Additionally, clodronate-hypochlorite mixtures ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2019.10.020
更新日期:2020-02-01 00:00:00
abstract::Gutta-percha (GP) has been the most widely used root canal filling material because of its well-known low toxicity. The inertness of GP, however, was challenged recently. The purpose of this study was to evaluate the toxicity of marketed endodontic GP using the radiochromium release test. Fourteen commercially availab...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(06)81885-6
更新日期:1990-09-01 00:00:00
abstract:INTRODUCTION:We evaluated the radiopacity and antibacterial properties of various concentrations of double antibiotic paste (DAP) containing barium sulfate (BaSO4) or zirconium oxide (ZrO2) radiopaque agents. METHODS:The radiopacity of 1, 10, and 25 mg/mL DAP containing 30% (w/v) BaSO4 or ZrO2, DAP-free radiopaque pas...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2018.06.010
更新日期:2018-09-01 00:00:00
abstract::The anatomy of third molars has been described as unpredictable. However restorative, prosthetic, and orthodontic considerations often require endodontic treatment of third molars in order for them to be retained as functional components of the dental arch. The purpose of this study was to investigate and characterize...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200011000-00011
更新日期:2000-11-01 00:00:00
abstract:INTRODUCTION:In this study, we investigated if apical periodontitis (AP) associated with diabetes influenced the levels of endogenous antioxidants, the total antioxidant capacity (TAC), and the oxidant parameter in the serum of Wistar rats. METHODS:Forty male rats were divided into 4 equal groups: normal rats (N), rat...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2017.05.014
更新日期:2017-10-01 00:00:00
abstract::This case series reports the outcomes of 8 patients (ages 9-14 years) who presented with 9 immature permanent teeth with pulpal necrosis and apical periodontitis. During treatment, 5 of the teeth were found to have at least some residual vital tissue remaining in the root canal systems. After NaOCl irrigation and medi...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2008.03.023
更新日期:2008-07-01 00:00:00
abstract:INTRODUCTION:The purpose of this retrospective study was to determine the success of the inferior alveolar nerve (IAN) block using either 3.6 mL or 1.8 mL 2% lidocaine with 1:100,000 epinephrine in patients presenting with symptomatic irreversible pulpitis. METHODS:As part of 7 previously published studies, 319 emerge...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.04.007
更新日期:2013-08-01 00:00:00
abstract:INTRODUCTION:Complementary methods of anatomic diagnosis, including cone-beam computed tomographic (CBCT) imaging, may be useful in the diagnosis of mesiobuccal (MB) canals of maxillary molars. METHODS:Thirty-five maxillary first molars were subjected to ex vivo analysis and 4 CBCT protocols: i-CAT Classic (Imaging Sc...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2016.12.011
更新日期:2017-05-01 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:Studies have found women try to avoid pain more than men, accept it less, and fear it more. The role of operator gender on subject gender pain in a clinical setting needs further study. The purpose of this randomized, double-blind investigation was to evaluate operator gender and its influence on reported ...
journal_title:Journal of endodontics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.joen.2014.10.001
更新日期:2015-02-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to evaluate and compare the centering ability and canal transportation of the ProTaper Next (PTN; Dentsply Maillefer, Ballaigues, Switzerland) and Self-adjusting File (SAF; ReDent-Nova, Ra'anana, Israel) systems in long oval root canals using cone-beam computed tomography imag...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2019.07.007
更新日期:2019-10-01 00:00:00
abstract::This study compared the quality of obturation of high- and low-temperature thermoplasticized injectable gutta-percha techniques and standard lateral condensation. A new model system was developed to more closely simulate the clinical environment. All obturations were performed in this same model which allowed direct c...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)81863-7
更新日期:1991-06-01 00:00:00
abstract::Adsorption of some paraformaldehyde was noted in a previous study evaluating its sterilizing effect on gutta-percha (GP). This study examined histologically the effect of this adsorption when formaldehyde-exposed GP was implanted into the subcutaneous connective tissue of rats. GP implants were prepared in cylinder sh...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)81372-5
更新日期:1992-02-01 00:00:00
abstract:INTRODUCTION:This study examined the effect of a new bioactive dentin substitute material (Biodentine) on the viability of human gingival fibroblasts. METHODS:Biodentine, White ProRoot mineral trioxide aggregate (MTA), and glass ionomer cement were evaluated. Human gingival fibroblasts were incubated for 1, 3, and 7 d...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2012.11.026
更新日期:2013-04-01 00:00:00
abstract:INTRODUCTION:The aim of the present study was to compare sonic activation using EDDY (VDW, Munich, Germany), passive ultrasonic irrigation (PUI), and mechanical activation using the XPendo Finisher (FKG Dentaire, La Chaux-des-Fonds, Switzerland) for the removal of calcium hydroxide from artificial grooves in straight r...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2018.11.001
更新日期:2019-03-01 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