Abstract：
:Orthodontic tooth movement has been implicated in secondary changes to the dental pulp. The purpose of this study was to correlate the effects of orthodontic tooth movement on the dental pulp by histomorphometric parameters. Four groups, each consisting of 36 male adult Sprague-Dawley strain rats, were studied with differing force magnitudes. These included a sham group in addition to groups with bilaterally placed appliances activated to 20, 40, and 60 g of initial force designed to mesially tip the maxillary first molars. Six rats were killed at 1, 3, 5, 7, 10, and 14 days. Specimens were fixed, embedded, and stained with tetrachrome. Pulpal measurements were made with an image analyzer and included changes in predentin and vascularity. Findings indicated a significant increase (p < or = 0.05) relative to time and force magnitude in capillary number. An initial pulpal hyperemia was observed following activation of orthodontic force which was unrelated to force magnitude. A force-dependent increase in predentin width was measured at the peak of the tooth movement cycle.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Nixon CE,Saviano JA,King GJ,Keeling SDdoi
10.1016/S0099-2399(06)81034-4subject
Has Abstractpub_date
1993-01-01 00:00:00pages
13-6issue
1eissn
0099-2399issn
1878-3554pii
S0099-2399(06)81034-4journal_volume
19pub_type
杂志文章abstract：INTRODUCTION:Candida in endodontic infections has been investigated in a large number of studies, but its role as an endodontic pathogen is still debatable. The aim of this study was to systematically review the literature on the prevalence of Candida species in root canal infections. METHODS:Extensive literature rese...
journal_title：Journal of endodontics
pub_type： 杂志文章,meta分析
doi：10.1016/j.joen.2018.07.016
更新日期：2018-11-01 00:00:00
abstract：INTRODUCTION:Electronic working length measurement during root canal treatment in teeth with enlarged apical foramina is a challenge. The aims of this in vitro study were (1) to assess the influence of foramen widening on the accuracy of 5 different electronic foramen locators (EFLs) and (2) to compare the accuracy of ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2013.09.032
更新日期：2014-01-01 00:00:00
abstract：INTRODUCTION:We performed a micro-computed tomographic assessment of the preparation of moderately single- and double-curved root canals using 3 single-file reciprocating nickel-titanium systems: S1 Plus Standard (Sendoline, Täby, Sweden), WaveOne Gold Primary (Dentsply Sirona, Ballaigues, Switzerland), and Reciproc R2...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2020.05.005
更新日期：2020-08-01 00:00:00
abstract：:This study was conducted to evaluate the influence of immediate versus delayed immersion time, and passive dye immersion versus centrifuged dye on apical leakage measurements. Eighty-four extracted human teeth with single straight canals were instrumented and divided into four experimental groups of 20 teeth each plus...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)81364-6
更新日期：1993-07-01 00:00:00
abstract：:This in vitro study compared the accuracy of file length measurements made on calibrated and uncalibrated direct digital images. Endodontic files of known lengths and ISO sizes were used in 10 single-rooted, relatively straight teeth within cadaver specimens. The crowns of the teeth were ground flat and an orthodontic...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/00004770-200112000-00017
更新日期：2001-12-01 00:00:00
abstract：INTRODUCTION:The aim of this study was to assess the effect of nitrogen ion implantation on the flexibility of rotary nickel-titanium (NiTi) instruments as measured by the load required to bend implanted and nonimplanted instruments at a 30° angle. METHODS:Thirty K3 files, size #40, 0.02 taper and 25-mm length, were a...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.01.012
更新日期：2012-05-01 00:00:00
abstract：:Many root canal instruments with several different designs have been introduced during recent years. This article evaluates the machining properties of four such instruments: the Flex-R, K-Flex, Trio-Cut, and S file. There are large variations in the machining properties of these instruments. The results are comparabl...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/s0099-2399(07)80200-7
更新日期：1990-12-01 00:00:00
abstract：INTRODUCTION:MicroRNAs (miRs) are a family of noncoding RNAs that regulate gene expression. They are ubiquitous among multicellular eukaryotes and are also encoded by some viruses. Upon infection, viral miRs (vmiRs) can potentially target gene expression in the host and alter the immune response. Although prior studies...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2016.10.006
更新日期：2017-01-01 00:00:00
abstract：:Atypical odontalgia is characterized by prolonged periods of throbbing or burning pain in the teeth or alveolar process, which occurs in the absence of any identifiable odontogenic etiology. The pain may be bilateral and change in location. This article presents two cases of atypical odontalgia that were misdiagnosed ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(97)80419-0
更新日期：1997-05-01 00:00:00
abstract：INTRODUCTION:The purpose of this systematic review was to compare the clinical and radiographic outcomes of nonsurgical retreatment with those of endodontic surgery to determine which modality offers more favorable outcomes. METHODS:The study began with targeted electronic searches of MEDLINE, PubMed, and Cochrane dat...
journal_title：Journal of endodontics
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.joen.2009.04.023
更新日期：2009-07-01 00:00:00
abstract：INTRODUCTION:Buffered local anesthetics have not been studied for incision and drainage procedures in dentistry. The purpose of this prospective, randomized, double-blind study was to compare the pain of infiltration and pain of an incision and drainage procedure by using a buffered versus a nonbuffered 2% lidocaine wi...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2013.07.008
更新日期：2013-11-01 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：INTRODUCTION:Patient preferences should be taken into account by clinicians when treatment planning. The purposes of this study were to describe the number of visits patients preferred when undergoing root canal therapy (RCT) and to assess whether their preferences were related to hypothetical treatment success rates. ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.06.038
更新日期：2012-10-01 00:00:00
abstract：:Immune and nervous systems play key roles in periapical pathosis; however, their spatial associations, which may be a prerequisite for paracrine interactions in the progression of periapical lesions, remain to be examined. In this study we examined the distribution and frequency of spatial associations between major h...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2006.08.014
更新日期：2007-02-01 00:00:00
abstract：:The shape of root canals cross-sectioned through their roots at 2 mm from their apices and its correlation with the D0 diameter of endodontic instruments was evaluated in 40 first upper molars. The molars were grouped according to age: under 13 yr (children), 18 to 20 yr (adolescents), 30 to 40 yr (adults), and over 5...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(99)80357-4
更新日期：1999-10-01 00:00:00
abstract：INTRODUCTION:Incision and drainage of symptomatic emergency patients with facial swelling is painful even after local anesthetics are administered. The purpose of this prospective, randomized, double-blind study was to compare the pain of infiltration and the pain of an incision and drainage procedure of a buffered ver...
journal_title：Journal of endodontics
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.joen.2015.06.017
更新日期：2015-10-01 00:00:00
abstract：:The effect of two different root canal cements and removal of the smear layer on the apical seal in roots obturated with Thermafil obturators was tested. Thirty extracted human mandibular first molars with 60 canals (mesial roots) were instrumented with the use of a step-back technique. Teeth were placed into 6 groups...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(98)80131-3
更新日期：1998-05-01 00:00:00
abstract：INTRODUCTION:Mineral trioxide aggregate (MTA) and calcium silicate (CS) cements exhibit acceptable levels of cytocompatibility. The aim of the present study was to evaluate MTA and CS cement genotoxicity in a human osteosarcoma cell line (MG63). METHODS:A mitochondrial colorimetric assay was used to evaluate the MG63 ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2010.03.039
更新日期：2010-07-01 00:00:00
abstract：INTRODUCTION:Autotransplantation is a viable option for treating missing teeth when a donor tooth is available. This retrospective study reports the success rate for the autotransplantation of 19 molars with complete root formation. METHODS:The study enrolled 19 patients (11 men and 8 women) in whom 19 molars were tra...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2010.04.028
更新日期：2010-08-01 00:00:00
abstract：INTRODUCTION:There are no long-term, prospective clinical studies assessing outcomes of endodontically treated cracked teeth with radicular extensions. The purpose of this prospective study was to examine the 2- to 4-year success and survival rates of endodontically treated, coronally restored, cracked teeth, specifica...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.03.015
更新日期：2019-07-01 00:00:00
abstract：:The purpose of this study was to compare the wicking propensity of multifilament sutures. Dexon II, Vicryl, and black silk suture (BSS) were dipped in saline or soaked for 48 h, then suspended on a microscope slide. Fluorescein isothiocyanate-dextran (FITC-D) was placed at the suture mid points, and its movement was o...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1097/01.don.0000121617.67923.05
更新日期：2004-09-01 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：INTRODUCTION:The aim of this study was to investigate the potential of autologous mesenchymal bone marrow stem cells (BMSCs) to promote hard-tissue formation after direct pulp capping procedures. MATERIALS AND METHODS:Bone marrow was aspirated from the iliac crest of healthy dogs of nonspecific race. Mononuclear cells...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2012.12.012
更新日期：2013-05-01 00:00:00
abstract：INTRODUCTION:Calcium hydroxide (CH) and nano-calcium hydroxide (NCH) as intracanal medicaments may affect the physical and chemical properties of dentin. The aim of this investigation was to evaluate the effects of CH and NCH on the microhardness and superficial chemical structure of radicular dentin. METHODS:In this ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2019.06.002
更新日期：2019-09-01 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 study was carried out to investigate the effect of changes in tooth structure due to masticatory cycles on amalgam retrofillings performed to different cavity depths. Forty upper maxillary first molars were tested. In the obturated palatal root apical amalgam was inserted to different depths (1.5 and 3 mm). Eight...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(97)80169-0
更新日期：1997-10-01 00:00:00
abstract：:Inflammation of pulp tissue appears as a consequence of caries progression. Its main characteristic is inflamed infiltrate whose cells contain lymphocytes. CD44 is a widely expressed adhesion molecule present in several body cells such as leukocytes and parenchymatous cells, including endothelial cells, epithelial cel...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2007.05.022
更新日期：2007-10-01 00:00:00
abstract：:Intermediate Restorative Material (IRM) has been advocated as a root-end filling material based primarily on reports of clinical success and various leakage studies. The objectives of this study were to determine the excisional wound healing responses of the periradicular tissues to IRM root-end filling material and t...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(97)80201-4
更新日期：1997-01-01 00:00:00
abstract：:This in vitro study was carried out to determine (1) the hydrophobicity of selected oral bacteria, (2) the influence of growth media (saliva and serum) and mode of growth (planktonic or biofilm) on the hydrophobicity of Enterococcus faecalis, and (3) the influence of growth media and conditioning fluids on the adheren...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/j.joen.2007.07.035
更新日期：2007-12-01 00:00:00
abstract：:Sodium hypochlorite (NaOCl) has been recommended for irrigation during root canal preparation. This investigation used scanning electron microscopy to examine instrumented and uninstrumented surfaces in the middle third of root canals following the use of several concentrations of NaOCl (5.25%, 2.5%, 1.0%, and 0.5%). ...
journal_title：Journal of endodontics
pub_type： 杂志文章
doi：10.1016/S0099-2399(06)81331-2
更新日期：1992-12-01 00:00:00
