Abstract:
:Root canal bacteria in teeth with apical periodontitis were enumerated after extraction and incubation. Canals in 36 teeth were sampled after: S1, incubation for 2 hours (group A), 2 days (group B), 4 days (group C), and 6 days (group D); S2, subsequent incubation for 1 week; S3, canal disinfection; and S4, final incubation for 1 week. Bacterial concentrations were determined by culture (colony-forming unit [CFU]) and epifluorescence-microscopy (EFM) and compared by using pairwise and exact-permutation tests (p < 0.05). CFU counts were lower than EFM counts. CFU counts in S1 were higher in Gp(A) than in Gp(C) (p < 0.004) and Gp(D) (p < 0.02). EFM counts in S1 were higher in Gp(A) than in Gp(C) (p < 0.02). Both enumeration methods showed bacterial counts decreasing from S1 to S2 (p < 0.04). EFM was superior to culture in this ex vivo model. The indigenous flora survived incubation for 6 days, but the adverse effect of initial access would preclude testing of disinfection protocols that require two sessions.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Villette G,Manek S,Legner M,Fillery ED,Torneck CD,Basrani BR,Friedman Sdoi
10.1016/j.joen.2008.08.038subject
Has Abstractpub_date
2008-12-01 00:00:00pages
1490-6issue
12eissn
0099-2399issn
1878-3554pii
S0099-2399(08)00796-6journal_volume
34pub_type
杂志文章abstract:INTRODUCTION:The purpose of this study was to evaluate the influence of anorganic bovine bone as a grafted biomaterial on newly formed bone and cementum in periapical regions after surgical endodontic treatment in cats. METHODS:After inducing apical periodontitis in 9 cats, root canal and surgical endodontic treatment...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2011.10.002
更新日期:2012-02-01 00:00:00
abstract::Stem cell therapy is a potential strategy to regenerate the dentin-pulp complex, enabling the conservation and restoration of functional teeth. We assessed the efficacy and safety of pulp stem cell transplantation as a prelude before the initiation of clinical trials. Granulocyte-colony stimulating factor (G-CSF) indu...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2014.01.020
更新日期:2014-04-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to evaluate the effect of low-surface tension EDTA solutions on the push-out bond strength of resin-based sealer to young and old root canal dentin. METHODS:Root canals from 64 (n = 32 age <30 years old and n = 32 >60 years old) extracted, decoronized, single-rooted human tee...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2017.09.007
更新日期:2018-03-01 00:00:00
abstract::In the present study, we used Fos expression as an index of nociceptive input to the spinal trigeminal nucleus after exposure of the coronal pulp tissue of maxillary right first molars and examined the effects of pretreatment with an opioid, a nonsteroidal anti-inflammatory drug or a local anesthetic before pulp expos...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/01.don.0000153844.61709.64
更新日期:2005-08-01 00:00:00
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 bleach...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200001000-00006
更新日期:2000-01-01 00:00:00
abstract::This in vitro study evaluated the survival rate and fracture resistance of maxillary central incisors restored with different post and core systems. The post and core systems investigated were a prefabricated high precious metal post with cast core (group A), zirconia post with a prefabricated bonded ceramic core (gro...
journal_title:Journal of endodontics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00004770-200210000-00008
更新日期:2002-10-01 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: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:The aim of this study was to evaluate the effect of calcium hydroxide (CH) and antibiotic pastes, including a mixture of metronidazole and ciprofloxacin, with and without minocycline or cefaclor, on the dislocation resistance of mineral trioxide aggregate (MTA) to root dentin. METHODS:Eighty single-rooted...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2014.08.018
更新日期:2014-12-01 00:00:00
abstract::An in vitro, flow-through optical system was designed to measure hemoglobin (Hb) concentrations in the pulp space. The system included light-emitting diodes and a silicon photodetector positioned on opposing surfaces of human teeth. A syringe pump allowed a controlled flow of blood through the pulp chamber. The Hb con...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(96)80230-5
更新日期:1996-01-01 00:00:00
abstract::This report presents a rare case of odontogenic cutaneous sinus tract caused by a vertical root fracture. The root-fractured molar was probably caused by an accidental blow by a cow 3 years ago. Despite all treatments by physicians and surgeons for nearly 1 year, the sinus tract recurred repeatedly. After diagnosis an...
journal_title:Journal of endodontics
pub_type: 杂志文章,评审
doi:10.1016/s0099-2399(06)81130-1
更新日期:1997-09-01 00:00:00
abstract:INTRODUCTION:The effect of endodontic involvement on tooth loss has not been quantified, so the present study aimed to assess this relationship after controlling for other relevant risk factors for tooth loss. METHODS:We analyzed data from 791 participants (18,798 teeth) in the Veterans Affairs Dental Longitudinal Stu...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2010.08.051
更新日期:2010-12-01 00:00:00
abstract::Ultrasonic root-end preparation techniques have recently been introduced and revolutionized the field of endodontic surgery. The purpose of this study was to compare quantitatively the quality of root-end preparation techniques prepared by a specially designed ultrasonic retrotip with those prepared in a traditional m...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(98)80152-0
更新日期:1998-10-01 00:00:00
abstract::This case report describes the clinical, radiologic, and histopathologic features of the glandular odontogenic cyst (GOC). Although a relatively rare lesion not previously reported in the endodontic literature, the GOC is recommended for inclusion in a differential diagnosis of a dentoalveolar radiolucency. The GOC is...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200403000-00014
更新日期:2004-03-01 00:00:00
abstract:INTRODUCTION:Experimental studies show that dental pulp cells respond unfavorably to contact with resin composite restorative material. Hypothetically, in a random population, the frequency of apical periodontitis should be higher for teeth restored with resin composite than with amalgam. Therefore, the aim was to comp...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2014.05.002
更新日期:2014-09-01 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 effects of parathyroid hormone (PTH), 1,25-dihydroxyvitamin D3, and prostaglandin E2 (PGE2) on alkaline phosphatase activity on cultured dental pulp and gingiva cells of bovine calf were compared. In pulp cells, PTH, 1,25-dihydroxyvitamin D3, and PGE2 significantly increased alkaline phosphatase activity, but no i...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(06)82009-1
更新日期:1991-04-01 00:00:00
abstract::The sealing properties of three temporary restorative materials, Cavit, IRM, and a polycarboxylate-based cement, Ultratemp Firm, were investigated in vitro. Standardized access cavities were prepared in 45, intact, extracted, human molars. The teeth were randomly assigned to three groups and the access openings filled...
journal_title:Journal of endodontics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/01.don.0000121610.63000.f2
更新日期:2004-08-01 00:00:00
abstract:INTRODUCTION:Different microbial communities have been associated with acute endodontic infections. The majority of the microorganisms are as yet uncultivable or difficult to grow under current laboratory conditions. Treponema species are strict anaerobic bacteria that are involved in several oral diseases. The aim of ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2010.08.008
更新日期:2010-11-01 00:00:00
abstract:INTRODUCTION:The aim of this retrospective study was to evaluate the outcome of endodontic microsurgery and to examine prognostic factors related to healing. METHODS:The clinical records of all patients who had undergone endodontic microsurgery from 1997-2003 at the National Dental Centre of Singapore were examined. T...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2014.04.005
更新日期:2014-08-01 00:00:00
abstract:INTRODUCTION:Calcium silicate-based materials (CSMs) are used in various endodontic procedures. The present study examined whether prolonged contact of mineralized dentin with recently commercialized versions of these materials adversely affects dentin collagen matrix integrity. METHODS:Dentin slabs prepared from extr...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2012.01.004
更新日期:2012-06-01 00:00:00
abstract:INTRODUCTION:Root fusion is an anatomic variation in maxillary second molars (MSMs); however, the nature of this canal morphology as it relates to its root anatomy has not been fully clarified. The purpose of this study was to investigate the relationship between features of fused roots and root canal anatomy in MSMs u...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.10.035
更新日期:2014-06-01 00:00:00
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::The Editorial Board of the Journal of Endodontics has developed a literature-based study guide of topical areas related to endodontics. This study guide is intended to give the reader a focused review of the essential endodontic literature and does not cite all possible articles related to each topic. Although citing ...
journal_title:Journal of endodontics
pub_type: 杂志文章,评审
doi:10.1016/j.joen.2007.11.007
更新日期:2008-05-01 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::A molar-incisor malformation (MIM) is a newly reported type of dental anomaly that involves a characteristic root malformation in permanent first molars and deciduous second molars and a crown defect in permanent central incisors. This case report describes a nonsurgical root canal treatment of a MIM-affected molar by...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2015.11.004
更新日期:2016-04-01 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::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::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:INTRODUCTION:The study was designed as a randomized double-blind trial to evaluate the anesthetic efficacy of 4% articaine with 1:100,000 epinephrine in inferior alveolar nerve block (IANB) and infiltration anesthetic techniques to anesthetize mandibular molars with irreversible pulpitis. METHODS:The study was compose...
journal_title:Journal of endodontics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.joen.2011.09.009
更新日期:2011-12-01 00:00:00