Abstract：
:It is thought that externally applied bleaching agents may penetrate into the pulp chamber. This study was conducted to evaluate the diffusion of peroxide bleaching agents into the pulp chamber of teeth restored with various restorative materials. Sixty-five human extracted anterior maxillary teeth were separated into the 13 groups containing 5 teeth. Five teeth (control group) were not subjected to any cavity preparation and restoration. Standardized class V cavities were prepared in the other 60 teeth and restored using composite resin (Charisma), polyacid modified composite resin (Dyract), or resin-modified glass ionomer cement (Vitremer). All teeth were sectioned 3 mm apical to the cementoenamel junction to remove the intracoronal pulp tissue, and the pulp chamber was filled with acetate buffer to absorb and stabilize any peroxide that might penetrate. Vestibular crown surfaces of teeth in the experimental groups were subjected to four different bleaching agents for 30 min at 37 degrees C, whereas the teeth in the control groups were exposed only to distilled water. Then the acetate buffer solution in the pulp chamber of each tooth was removed, and the pulp chamber of each tooth was rinsed with 100 ml of distilled water twice. Leukocrystal violet and enzyme horseradish peroxidase were added to the mixture of the acetate buffer and rinse water. The optical density of the resulting blue solution was determined spectrophotometrically and converted into microgram equivalents of hydrogen peroxide. Higher hydrogen peroxide concentrations resulted in a higher pulpal peroxide penetration. The highest pulpal peroxide penetration was found in resin-modified glass ionomer cement groups, whereas composite resin groups showed the lowest pulpal peroxide penetration.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Gökay O,Yilmaz F,Akin S,Tunçbìlek M,Ertan Rdoi
10.1097/00004770-200002000-00008keywords:
subject
Has Abstractpub_date
2000-02-01 00:00:00pages
92-4issue
2eissn
0099-2399issn
1878-3554pii
S0099-2399(05)61008-4journal_volume
26pub_type
杂志文章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：:Analyses with the scanning electron microscope and the X-ray microprobe were performed on 13 silver cones removed from 12 patients. The cones showed changes that ranged from surface dulling to black corrosion and pitting. Sulfur and chlorine were detected at the apical end of the cones and in the biopsy specimens of p...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(75)80198-1
更新日期：1975-06-01 00:00:00
abstract：INTRODUCTION:This study aimed to compare the physicochemical and biological properties of premixed calcium silicate-based endodontic sealers with other conventional root canal filling materials by systematically reviewing laboratory studies. METHODS:The search was conducted in 3 databases (Medline via PubMed, Scopus, ...
journal_title：Journal of endodontics
pub_type： 杂志文章,评审
doi：10.1016/j.joen.2016.11.019
更新日期：2017-04-01 00:00:00
abstract：INTRODUCTION:The morphogenic complexities of dens invaginatus (DI) Oehlers type 3 in maxillary canines offer significant endodontic challenges. METHODS:A case report is provided of a 14-year-old female patient who presented with an anomalous-looking permanent maxillary canine associated with a sinus tract. Pulp testin...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2014.06.008
更新日期：2014-10-01 00:00:00
abstract：:The aim of this study was to investigate the response of human pulp tissue to a dentin bonding agent, Scotchbond Multi-Purpose Plus (SMPP), in exposed class V cavities. Sixteen human premolar teeth were mechanically exposed. Ten pulps were capped with SMPP and six teeth were capped with Dycal. The cavities were filled...
journal_title：Journal of endodontics
pub_type： 临床试验,杂志文章
doi：10.1097/01.don.0000137649.24821.91
更新日期：2005-03-01 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:Cross-sectional studies describe the health status of a population and measure the prevalence of disease or treatment. Neither the prevalence of periapical radiolucency, a surrogate for disease, nor the prevalence of root canal treatment have been subjected to a systematic review, which is the highest leve...
journal_title：Journal of endodontics
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.joen.2012.05.023
更新日期：2012-09-01 00:00:00
abstract：:A technique utilizing fiberoptics to transilluminate a beveled root surface during periradicular surgery is described. This procedure when integrated with other standard endodontic surgical aids may help diagnose apical variations and vertical root fractures. ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)80301-8
更新日期：1994-08-01 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:Lipopolysaccharide (LPS) has been shown to regulate the function of odontoblasts. However, the molecular mechanisms of the effect of LPS on odontoblasts are poorly understood. Decorin (DCN), one of the major matrix proteoglycans, is known to affect the mineralization of teeth. In this study, we investigate...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2011.12.021
更新日期：2012-04-01 00:00:00
abstract：INTRODUCTION:Previously, we have shown that stem cells from apical papilla (SCAPs) can be chemoattracted by stromal cell-derived factor-1α (SDF-1α). The purpose of this study was to investigate the intracellular signaling pathways involved in SDF-1α-mediated migration of SCAPs. METHODS:Chemotaxis assays were performed...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.04.014
更新日期：2016-07-01 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：:A technique using K files with modified tips has been developed for the penetration of constricted canals. The tip of a #10 K file was sliced diagonally to make it thinner. Because this modified K file has an especially fine tip and an appropriate stiffness, it followed constricted or sharply curved canals well and ha...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(97)80190-2
更新日期：1997-06-01 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：:The current external inflammatory root resorption treatment protocol, which uses calcium hydroxide dressing, usually comprises multiple and long-term applications. In addition to the need for multiple appointments for calcium hydroxide replacement, the long-term maintenance of this compound in the root canal weakens d...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2015.03.019
更新日期：2015-09-01 00:00:00
abstract：INTRODUCTION:The aim of this study was to investigate the release of growth factors into root canal space after the irrigation procedure of regenerative endodontic procedure. METHODS:Sixty standardized root segments were prepared from extracted single-root teeth. Nail varnish was applied to all surfaces except the roo...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.04.029
更新日期：2016-12-01 00:00:00
abstract：INTRODUCTION:The management of endodontic emergencies has been particularly challenging during the coronavirus disease 2019 (COVID-19) outbreak because of the possible generation of airborne particles and aerosols. The aim of this report was to contribute to the practice of endodontics by proposing a general protocol f...
journal_title：Journal of endodontics
pub_type： 杂志文章,评审
doi：10.1016/j.joen.2020.09.018
更新日期：2021-01-01 00:00:00
abstract：INTRODUCTION:A major complication after endodontic treatment is persistent pain on biting or chewing. Although unsuccessful endodontic treatment can account for such pain, pain to chewing and biting can also be a result of an unsupported or propagated crown fracture. Crown fractures that extend apically result in deter...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2014.06.021
更新日期：2015-01-01 00:00:00
abstract：INTRODUCTION:The effect of rheumatoid arthritis (RA) on the healing and pathophyisiology of apical periodontitis is unknown because there is no study in the literature evaluating the association of RA with the prevalence of periapical rarefying osteitis (PAR) and endodontic treatment. Therefore, the goal of this cross-...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2017.02.015
更新日期：2017-07-01 00:00:00
abstract：:Occlusal endodontic access preparations are occasionally made in teeth without removing the original restoration. However, microleakage between restorative materials that are placed at different times has not been extensively studied. Therefore, our objective was to compare microleakage at three areas: between an acce...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(99)80278-7
更新日期：1999-06-01 00:00:00
abstract：:The aim of this study was to test the effect of different concentrations of sodium hypochlorite, chlorhexidine, and cetrimide on the following bacterial strains: Facultative aerobes-anaerobes: Candida albicans ATCC 10231; Enterococcus faecalis ATCC 29212; Escherichia coli ATCC 25,922; Pseudomonas aeruginosa ATCC 27,85...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)81170-2
更新日期：1999-05-01 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:Securing a reproducible glide path before instrumentation is recommended to maintain the original geometry of the root canal system and to prevent file separation. Mechanical glide path management systems have been introduced to expedite this step. The aim of this study was to compare apical transportation...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2015.07.014
更新日期：2015-11-01 00:00:00
abstract：:The purpose of this study was to compare three engine driven (nickel-titanium) NiTi instrument systems with hand files for their effect on canal transportation. Mesial roots of mature lower first molars with separate canals were paired on the basis of curvature and morphology. Canal lengths were standardized to 11 mm ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(97)80310-X
更新日期：1997-08-01 00:00:00
abstract：:Little is known about the effect of aging on characteristic functions of pulp cells. When damaged pulp is recovered and mineralized tissue is formed to protect remaining pulp tissue, the general responses of pulp tissue after adequate stimuli (pulp cell proliferation and activation of alkaline phosphatase [ALPase]) ar...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200301000-00003
更新日期：2003-01-01 00:00:00
abstract：INTRODUCTION:The aim of this study was to compare the shaping ability of 4 different nickel-titanium systems, considering their variation in alloy treatment, kinematics, and design, used to prepare canals with severe curvature using micro-computed tomographic analysis. METHODS:Thirty-two mesial roots of mandibular mol...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.02.018
更新日期：2019-06-01 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：INTRODUCTION:This case report describes the effect of unintentionally extruded mineral trioxide aggregate (MTA) into periradicular lesions and tissues on the prognosis of periradicular healing in maxillary left central incisor with periradicular lesion. METHODS:A 17-year-old girl with a large periradicular lesion from...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2009.11.026
更新日期：2010-04-01 00:00:00
abstract：:Reports on the prevalence of Enterococcus faecalis in root canals vary considerably, potentially because of variations in clinical sampling and sample analysis methods. This study compared culture and real-time quantitative polymerase chain reaction (qPCR) to detect and quantify E. faecalis in the same root canal samp...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2005.10.037
更新日期：2006-03-01 00:00:00
abstract：:This report presents an unusual indication for root resection of a lower molar tooth and also reviews the history of root resection. ...
journal_title：Journal of endodontics
pub_type： 杂志文章,评审
doi：10.1097/00004770-200004000-00016
更新日期：2000-04-01 00:00:00
