Abstract：
:In this study, cell reaction after exposure to several dental cements was determined using a dentin barrier test device. The reaction of mouse fibroblasts grown on the "pulpal" side of a bovine dentin disk was determined after exposure to dental cements applied on the "cavity" side of the disk. For pretreatment, dentin disks (500-micrometer-thick) were etched on one side and either sterilized by autoclaving or disinfected with ethanol. It was found for both pretreatment groups that zinc phosphate cement was less toxic than the conventional glass ionomer cements. A light-cured glass ionomer cement and zinc oxide-eugenol were the most toxic materials tested. Disinfecting the dentin slices instead of autoclaving reduced the toxicity of the phosphate cement and the glass ionomer cements tendentiously. Because the strong cytotoxic reaction evoked by zinc oxide-eugenol and by the glass ionomer cements is in contrast to in vivo findings, further improvements of the dentin barrier test device will be necessary.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Schmalz G,Schweikl H,Esch J,Hiller KAdoi
10.1016/s0099-2399(96)80285-8subject
Has Abstractpub_date
1996-03-01 00:00:00pages
112-5issue
3eissn
0099-2399issn
1878-3554pii
S0099-2399(96)80285-8journal_volume
22pub_type
杂志文章abstract：:The purpose of this study was to evaluate gray mineral trioxide aggregate (MTA), white MTA, and Fuji II LC cement as coronal barriers to bacterial leakage. Seventy-eight, matched, human teeth were obturated with gutta-percha. In group I, 18 pairs received a 3-mm barrier of gray or white MTA. In group II, 18 pairs rece...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200411000-00008
更新日期：2004-11-01 00:00:00
abstract：:The purpose of the present study was to investigate the effect of laser irradiation on calcified nodule formation in human dental pulp (HDP) cells. HDP cells were irradiated once with a Ga-Al-As laser for 5 and 10 min, and calcified nodule formation was determined by von Kossa staining. The laser irradiation increased...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(99)80395-1
更新日期：1999-01-01 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：:The aim of this study was to evaluate the presence of bacterial biofilm on the external surface of the root apex in teeth with pulp necrosis, with and without radiographically visible periapical lesions, and in teeth with a vital pulp. Twenty-one teeth were extracted, eight with pulp necrosis and periapical lesions, e...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200212000-00006
更新日期：2002-12-01 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：:This study investigated possible collateral C-fiber innervation between the pulps of rat molars by assessing neurogenic inflammation (NI) induced by the C-fiber excitant mustard oil (MO). MO was applied to the pulp of the left mandibular first molar in two groups of rats: group 1, guanethidine sympathectomized rats (t...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(96)80242-1
更新日期：1996-08-01 00:00:00
abstract：INTRODUCTION:Regenerative endodontic procedures are an alternative treatment for immature teeth with necrotic pulps. Typically, intracanal medicaments such as triple antibiotic paste (TAP) or double antibiotic paste (DAP) and calcium hydroxide (Ca[OH](2)) are used for disinfection. However, their effect on human stem c...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.06.018
更新日期：2012-10-01 00:00:00
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 tee...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2008.08.022
更新日期：2008-12-01 00:00:00
abstract：:The antibacterial activity of three commercial 10% carbamide peroxide bleaching agents (Nite White, Karisma, and Opalescence) on Streptococcus mutans, Streptococcus mitis, Streptococcus sanguis, Lactobacillus casei, and Lactobacillus acidophilus was examined. Chlorhexidine (0.2%) was used as a positive control. Test m...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(96)80217-2
更新日期：1996-07-01 00:00:00
abstract：INTRODUCTION:During apicoectomy and retrograde cavity preparation, a smear layer, which contains microorganisms and necrotic pulpal tissues, is formed on the dentinal surfaces cut by the instruments. Bacteria can survive and proliferate inside or below the smear layer. The purpose of this study was to evaluate in vitro...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2011.03.001
更新日期：2011-06-01 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：:No information could be found in the dental literature on the hardness or strength of the materials in root canal instruments. Hardness testing is a convenient method for examining these products, and strength properties can be deduced from available strength-hardness data. The Vickers hardness of cross-sections of st...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(96)80274-3
更新日期：1996-02-01 00:00:00
abstract：:Studies of endodontic outcomes suggest that fracture of the tooth after endodontic therapy may be a greater problem than endodontic reinfection. Immediate full coverage with or without a post and core is the best way to prevent fracture. Unfortunately, in many population areas, due predominantly to cost, this restorat...
journal_title：Journal of endodontics
pub_type： 杂志文章,评审
doi：10.1016/j.joen.2019.12.012
更新日期：2020-04-01 00:00:00
abstract：INTRODUCTION:Culture-independent studies have revealed a broad spectrum of oral bacterial taxa that may be associated with disease. This study investigated the prevalence of three new candidate oral pathogens: Prevotella baroniae, Prevotella multisaccharivorax, and as-yet-uncultivated Bacteroidetes oral clone X083 in p...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2009.05.033
更新日期：2009-10-01 00:00:00
abstract：OBJECTIVES:Dentists can choose between metal and fiber post systems to provide post-retained restorations. The risk of tooth loss and other complications differs between different post systems, as do the initial treatment costs. We aimed to assess the cost-effectiveness of (1) cast metal (MC), (2) preformed metal (MP),...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2017.01.002
更新日期：2017-05-01 00:00:00
abstract：:Twenty volunteers with first molars free of restorations and caries were recruited. One molar from each arch was selected, and rubber dam was applied. Seven sites on each crown were electric pulp tested 4 times with an Elements Diagnostic Unit, and lowest threshold responses were recorded. Data were analyzed with one-...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2007.08.006
更新日期：2007-11-01 00:00:00
abstract：:The purpose of this study was to evaluate the integrity of resected root-end surfaces of extracted human teeth after using ultrasonic tips at low or high frequencies for root-end preparation. Thirty bilaterally matched pairs of single-rooted human teeth had root-end resections using a low-speed diamond saw and were ex...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(96)80091-4
更新日期：1996-04-01 00:00:00
abstract：:The purpose of this study was to compare the cleaning efficacy of passive ultrasonic activation with that of passive sonic activation after hand instrumentation. Sixty curved molar canals were hand-instrumented to size 35 and divided into three groups. Group 1 received no further treatment. Group 2 received 3 min of p...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(99)80120-4
更新日期：1999-11-01 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：INTRODUCTION:This study aimed to evaluate the precision of electronic apex locators (EALs) in locating the apical constriction (AC) during a root canal treatment compared with a histologic evaluation of the AC as well as the effects of possible influencing factors by means of a systematic review of the literature and m...
journal_title：Journal of endodontics
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.joen.2015.08.012
更新日期：2015-11-01 00:00:00
abstract：INTRODUCTION:The purpose of this study was to compare the accuracy in vivo of 2 electronic apex locators (EALs), the Raypex 5 and the Mini Apex Locator. METHODS:The working length (WL) was determined electronically for 40 human root canals by using a K-file and 1 of the 2 EALs. The files were fixed at the WL, and the ...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2011.06.021
更新日期：2011-10-01 00:00:00
abstract：:The purpose of this study was to evaluate the dental anxiety expressed among patients undergoing endodontic treatment with respect to some social and dental parameters. The dental records of 98 patients, 42 men and 56 women who were referred for root canal treatment to an endodontist, were examined. Patients completed...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(98)80028-9
更新日期：1998-06-01 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：: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：INTRODUCTION:The purpose of this study was to investigate the effects of instrumentation and irrigation on the initial adherence of Enterococcus faecalis to root canal dentin and to explore initial microbial adhesion to root filling materials. METHODS:The following specimens were prepared: instrumented and uninstrumen...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.04.006
更新日期：2019-07-01 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：INTRODUCTION:Information on the nerve fibers innervating the dental pulp is crucial for understanding dental pain and hypersensitivity. This study investigated the morphologic differences of parvalbumin (PV)-positive (+) myelinated fibers in 3 different regions of the human dental pulp. METHODS:Light and electron micr...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2017.01.010
更新日期：2017-06-01 00:00:00
abstract：:A laboratory study was performed on Gates Glidden and Peeso drills to determine the bending characteristics and related metallurgical properties. Sizes #1 to #6 stainless steel Gates Glidden drills, sizes #1 to #6 stainless steel and carbon steel type P Peeso drills, and sizes #009 to #023 carbon steel-type B-1 Peeso ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)80530-3
更新日期：1993-09-01 00:00:00
abstract：INTRODUCTION:The purpose of this study was to assess the ex vivo torsional performance of a novel rotary system in small root canals after 2 different glide path preparations. METHODS:Each independent canal of 8 mesial roots of mandibular molars was randomly assigned to achieve a reproducible glide path with a new set...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.10.034
更新日期：2017-03-01 00:00:00
abstract：:This study is a quantitative assessment of the luminous energy transmitted through different translucent fiber posts. After embedding the posts in black resin, the blocks were submitted to sequential cuts in a precision machine, and depths of 16 mm, 12 mm, 8 mm, and 4 mm were assessed for light transmission with a dig...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2007.12.007
更新日期：2008-03-01 00:00:00
