Abstract：
:The purpose of this study was to evaluate the bleaching effect of sodium percarbonate on artificially stained pulpless teeth. Twenty extracted human mandibular premolars were stained by immersing them in human blood mixed with iron sulfide, and divided into three test groups and one control group. The following bleaching agents were used: sodium perborate mixed with 30% hydrogen peroxide (WB), sodium percarbonate mixed with distilled water (PW) or 30% hydrogen peroxide (PH). On days 5, 10, and 15, each pulp chamber was refilled with fresh bleaching paste. The L* (average lightness) of the midbuccal area of specimens was measured before and after staining, and on days 5, 10, 15, and 20 by colorimeter. The bleaching effect was evaluated by the lightness recovery rate (LRR) calculated from L*. WB showed the highest LRR among all groups, and PW and PH showed significantly higher LRR when compared with the control group. PW and PH were not significantly different. Results showed that sodium percarbonate had an obvious bleaching effect without hydrogen peroxide and indicated that it could be a safe intracoronal bleaching agent.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Kaneko J,Inoue S,Kawakami S,Sano Hdoi
10.1097/00004770-200001000-00006keywords:
subject
Has Abstractpub_date
2000-01-01 00:00:00pages
25-8issue
1eissn
0099-2399issn
1878-3554pii
S0099-2399(05)60992-2journal_volume
26pub_type
杂志文章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：:This study compared the apical seal produced by four obturation techniques. Sixty-four extracted human teeth were prepared and obturated using lateral condensation of gutta-percha that was either unmodified or was dipped in chloroform, eucalyptol, or eucapercha paste. After storage in normal saline and 0.02% azide sol...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(89)80158-X
更新日期：1989-12-01 00:00:00
abstract：INTRODUCTION:An ideal orthograde or retrograde filling material should seal the pathways of communication between the root canal system and its surrounding tissues. It should also be nontoxic, noncarcinogenic, nongenotoxic, biocompatible, insoluble in tissue fluids, and dimensionally stable. Mineral trioxide aggregate ...
journal_title：Journal of endodontics
pub_type： 杂志文章,评审
doi：10.1016/j.joen.2009.09.006
更新日期：2010-01-01 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:This article reports on the feasibility of conducting a large-scale endodontic prospective cohort study in The National Dental Practice-Based Research Network. This study was designed to measure pain and burden associated with initial orthograde root canal therapy (RCT) and to explore potential prognostic ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.08.002
更新日期：2012-11-01 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 verify the expression of the calcium-sensing receptor (CaSR) and its role in mineral trioxide aggregate (MTA)-induced odontoblastic differentiation and mineralization in human dental pulp cells (hDPCs). METHODS:The expression of CaSR in human dental pulp tissue and hDPCs w...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.03.019
更新日期：2019-07-01 00:00:00
abstract：INTRODUCTION:It was recently reported that heme oxygenase-1 (HO-1) activity is related to stem cell differentiation; however, the involvement of HO-1 in pulp cell growth and differentiation has not been well explored. The purpose of this study was to investigate the role of HO-1 in the growth and differentiation of hum...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2010.04.011
更新日期：2010-08-01 00:00:00
abstract：INTRODUCTION:The aim of this study was to investigate the influence of apical filling material and the modification made to the apical preparation design in surgical endodontics on the areas of stress concentration in the mesial root of a mandibular molar using finite element analysis. METHODS:The filling material was...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.12.007
更新日期：2020-04-01 00:00:00
abstract：:The expression of the vanilloid receptor subtype 1 (VR1, TRPV1) was detected in human dental pulp fibroblasts (PF-10) using RT-PCR, Western blotting, and immunocytochemical analysis. As revealed by ELISA, capsaicin induced IL-6 expression in PF-10 cells, and the VR1 antagonist capsazepine dose-dependently inhibited ca...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/01.don.0000155259.22746.ae
更新日期：2005-09-01 00:00:00
abstract：INTRODUCTION:Stem cells from the apical papilla (SCAPs) possess strong odonto/osteogenic differentiation potential. This study investigated the effect of cyclic adenosine monophosphate (cAMP) on odonto/osteogenic differentiation of SCAPs and the underlining interplay between cAMP and transforming growth factor beta 1 (...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2018.10.008
更新日期：2019-02-01 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：INTRODUCTION:This study aimed to investigate the effects of 2 inorganic polyphosphates (poly[P]) are linear polymers of orthophosphate (Pi) residues linked by energy-rich phosphoanhydride poly(P) compounds, sodium triphosphate (STP, Na5P3O10) and sodium hexametaphosphate (SHMP, Na15P13O40 ∼ Na20P18O40) on the prolifera...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2015.01.038
更新日期：2015-06-01 00:00:00
abstract：INTRODUCTION:This study aimed to examine the dynamic recovery of established multispecies biofilms of oral bacteria after an initial treatment by D-enantiomeric peptide DJK-5, L-enantiomeric peptide 1018, or chlorhexidine digluconate (CHX). METHODS:Oral biofilms from 2 donors were grown on collagen-coated hydroxyapati...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2020.11.020
更新日期：2020-11-25 00:00:00
abstract：:Polymerase chain reaction (PCR) followed by reverse dot blot was used to detect Enterococcus faecalis leakage through mineral trioxide aggregate (MTA) apical obturations of pulpless teeth with open apices. Prepared root canals of 34 extracted teeth were given a standard apical foramen opening and received orthograde a...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/01.don.0000128749.50151.24
更新日期：2004-12-01 00:00:00
abstract：:Calcium hydroxide is the "gold standard" endodontic medication, but it may fail to eliminate certain facultative bacteria and yeasts found in root canal systems. In this study, standardized bovine dentin blocks infected with Enterococcus faecalis were treated with an aqueous calcium hydroxide or bioactive glass S53P4 ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200404000-00009
更新日期：2004-04-01 00:00:00
abstract：:Pulp revascularization is a promising procedure for the treatment of adolescents' immature permanent teeth with necrotic pulp and/or apical periodontitis. However, the ability to successfully perform pulp revascularization in a middle-aged patient remains unclear. A 39-year-old woman was referred for treatment of teet...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2015.04.022
更新日期：2015-09-01 00:00:00
abstract：INTRODUCTION:An evaluation was made of the connective tissue reaction in rats after subcutaneous implantation of methacrylate resin-based sealers (EndoREZ [Ultradent Products, Inc, South Jordan, UT] with a polymerization accelerator and RealSeal [Sybron Dental Specialties, Orange, CA]) and Pulp Canal Sealer (Sybron Den...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2010.06.019
更新日期：2010-09-01 00:00:00
abstract：INTRODUCTION:Enterococcus faecalis is frequently recovered from root-filled teeth with refractory apical periodontitis. The ability of E. faecalis to form a matrix-encased biofilm contributes to its pathogenicity; however, the role of extracellular dextran and DNA in biofilm formation and its effect on the susceptibili...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.04.007
更新日期：2012-07-01 00:00:00
abstract：:The purpose of this in vitro study was to compare the extrusion of thermoplacticized gutta-percha in teeth instrumented with Profile 0.06 or Profile GT, and obturated with Thermafil Plus and Thermafil GT, respectively. A total of 120, extracted, human maxillary central incisors were divided into four equal groups. Gro...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200406000-00010
更新日期：2004-06-01 00:00:00
abstract：:The purpose of this investigation was twofold: (1) to search for clinical articles pertaining to success and failure of periapical surgery and (2) to assign levels of evidence to these studies except case reports. Electronic and manual searches were conducted to identify all the literature regarding success and failur...
journal_title：Journal of endodontics
pub_type： 杂志文章,评审
doi：10.1097/01.don.0000133158.35394.8a
更新日期：2005-01-01 00:00:00
abstract：:A long-standing lesion associated with an undetected perforation of the furca in a mandibular molar was successfully managed using a multidisciplinary treatment approach. The sequence of therapeutic procedures involved conventional endodontic retreatment, an initial orthograde sealing of the perforation, guided tissue...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)80989-1
更新日期：1995-11-01 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:This study evaluated the influence of cervical preflaring on the incidence of root dentin defects after root canal preparation. METHODS:Extracted human maxillary central incisors were selected and allocated to 1 control group and 12 experimental groups (n = 15). Teeth in the control group were left unprep...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2017.09.021
更新日期：2018-02-01 00:00:00
abstract：INTRODUCTION:Communication between pulp and periodontal tissue has been well established. However, it is unknown when periodontal disease begins to affect the clinical response of pulp tissue. The aim of this study was to assess the influence of periodontal severity on pulp sensibility by means of electric and thermal ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2017.07.006
更新日期：2017-11-01 00:00:00
abstract：:The aim of this study was to measure root-dentin microhardness after instrumentation with two types of files and using irrigation with 2.5% sodium hypochlorite. Thirty roots were instrumented with irrigation: 10 roots had the pulp extirpated only; 10 roots were instrumented with stainless steel files, and 10 roots wer...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200204000-00012
更新日期：2002-04-01 00:00:00
abstract：INTRODUCTION:The purpose of this study was to evaluate the effects of endodontic irrigants on the push-out strength and hydration behavior of accelerated mineral trioxide aggregate (MTA) in its early setting phase. METHODS:In an in vitro perforation model, MTA with or without 10% CaCl(2) was condensed and allowed to i...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2010.08.039
更新日期：2010-12-01 00:00:00
abstract：INTRODUCTION:The health of human teeth depends on the integrity of the hard tissue and the activity of the pulp and periodontal tissues, which are responsible for nutritional supply. Without the nourishing of the pulp tissue, the possibility of tooth fracture can increase. In immature permanent teeth, root development ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.10.002
更新日期：2013-02-01 00:00:00
abstract：:With the recent influx of osseointegrated endosseous implants in dentistry, attention has been drawn away from using endodontic stabilizers as a means of stabilizing and retaining teeth. It is our opinion that endodontic stabilizers should be considered in the treatment planning of seemingly nonretainable teeth. They ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)81268-9
更新日期：1992-05-01 00:00:00
abstract：INTRODUCTION:This study compared the efficacy of a reciprocating single-instrument system and a rotary multi-instrument system followed by a supplementary approach with a finishing instrument in removing the filling material from curved canals during retreatment. METHODS:Forty mesial canals from extracted mandibular m...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.04.007
更新日期：2016-07-01 00:00:00
