Abstract:
AIM:To investigate interfacial stress distribution in restored root filled teeth with various post lengths and crown heights. METHODOLOGY:Three-dimensional mathematical models of a root filled mandibular premolar tooth were constructed. Parts of the tooth structures were replaced with ceramic crowns having three crown heights incorporating, either a cast post and core or a resin post and cores with fibre post or metallic post with four post lengths. Finite element linear analysis was performed to calculate equivalent and shear stress distribution at the interfaces between the teeth and post and cores under mesiodistal symmetrical boundary conditions and an oblique static load of 400 N. RESULTS:For the resin post and core with fibre and metallic posts, shear stress at the interface was greater in the cervical area than the post area, depending on the crown height. The resin post and core with metallic post had lower shear stress at the interface of cervical area than that of the fibre post model; however, the metallic post models produced a high concentration of shear stress at the interface between the post and resin composite. On the other hand, for the cast post and core, the shear stress at the interface was mainly produced in the post end area, which increased with decrease of post length. CONCLUSIONS:For the resin post and core, bonding integrity to the cervical area would play a critical role in the survival of the restored tooth, whereas for the cast post and core, the bond of the post would be essential.
journal_name
Int Endod Jjournal_title
International endodontic journalauthors
Kainose K,Nakajima M,Foxton R,Wakabayashi N,Tagami Jdoi
10.1111/iej.12397subject
Has Abstractpub_date
2015-11-01 00:00:00pages
1023-32issue
11eissn
0143-2885issn
1365-2591journal_volume
48pub_type
杂志文章abstract:AIM:To evaluate the effect of repeated sterilization cycles in dry oven or autoclave, on the mechanical behaviour and fatigue resistance of rotary endodontic Ni-Ti instruments. METHODOLOGY:New Ni-Ti instruments were subjected to five consecutive sterilization cycles in a dry oven or steam autoclave. Microhardness was ...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2006.01138.x
更新日期:2006-09-01 00:00:00
abstract:AIM:To characterize the microbial composition of persistent periapical lesions of root filled teeth using a molecular genetics approach. METHODOLOGY:Apical lesion samples were collected from 12 patients (23-80 years old) who visited the Kyushu University Hospital for apicectomy with persistent periapical lesions assoc...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.12361
更新日期:2015-08-01 00:00:00
abstract:AIM:To compare the ability of cone-beam computed tomography (CBCT) and digital periapical radiographs (PR) to detect simulated tissue-occupied recesses in root canals. METHODOLOGY:A standard canal was created in 30 extracted mandibular premolar roots. Each root was longitudinally split into buccal and lingual halves. ...
journal_title:International endodontic journal
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2591.2012.02025.x
更新日期:2012-08-01 00:00:00
abstract:AIM:To identify, search for and critically interpret the results from clinical studies on single- versus multiple-visit root canal treatment in the light of an evidence-based paradigm. For that purpose, the quality of the available body of evidence was assessed using the SORT 'grade' - Strength of Recommendation Taxono...
journal_title:International endodontic journal
pub_type: 杂志文章,评审
doi:10.1111/iej.12621
更新日期:2017-03-01 00:00:00
abstract:AIM:To develop a suitable protocol for screening extracted teeth so as to create anatomically well-balanced experimental groups for endodontic studies. METHODOLOGY:Sixty pairs (120 teeth) of contralateral premolars (CLPs) were collected. The evaluation of samples for anatomical features was performed in the following ...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.12553
更新日期:2016-10-01 00:00:00
abstract:AIM:To investigate the apical anatomy of C-shaped canal systems in mandibular second molars by micro-computerized tomography (microCT) and stereomicroscopy. METHODOLOGY:Forty-four permanent mandibular second molars with a C-shaped root canal systems from a native Chinese population were scanned at 100 microm intervals...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2007.01193.x
更新日期:2007-04-01 00:00:00
abstract:AIM:To evaluate the adhesive strength of Resilon to Next root canal sealant (Heraeus-Kulzer), a methacrylate-based root canal sealer, using a modified microshear bond testing design. METHODOLOGY:Flat Resilon surfaces of different roughnesses (smooth surface and surface roughness equivalent to 320-grit and 180-grit) we...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2005.01012.x
更新日期:2005-10-01 00:00:00
abstract:AIM:To introduce and assess a novel method for measuring washout resistance of cement-based dental materials, including mineral trioxide aggregate (MTA), to qualitatively verify the results with a clinical simulation and to evaluate the washout resistance of a new root-end filling material. METHODOLOGY:A method for as...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2012.02108.x
更新日期:2013-02-01 00:00:00
abstract:BACKGROUND:Stem/progenitor cell-mediated pulpal regeneration could represent a promising therapeutic alternative in the field of clinical endodontics. AIM:The present study aimed to systematically assess and meta-analyse dental pulpal tissue regeneration, pulpal vitality and apical healing after the transplantation of...
journal_title:International endodontic journal
pub_type: 杂志文章,meta分析
doi:10.1111/iej.13177
更新日期:2019-11-01 00:00:00
abstract:AIM:To investigate the presence of resolvins E1 (RvE1) and D2 (RvD2) in teeth with primary endodontic infections and apical periodontitis, and to assess the influence of calcium hydroxide medication [Ca(OH)2 ], in association with 2% chlorhexidine gel (2% CHX gel), and N-acetylcysteine (NAC) on the levels of RvE1 and R...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.13403
更新日期:2021-01-01 00:00:00
abstract:AIM:To assess and correlate three distinct states of severely painful endodontically derived inflammation with their depiction on periapical radiographs using periapical index (PAI) scores. METHODOLOGY:During a period of 15 months, 368 consecutively enrolled patients with suspected endodontic emergency conditions were...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.13407
更新日期:2021-02-01 00:00:00
abstract:AIM:To compare the toxicity of methacrylate resin-based root canal sealers with sealers based on epoxy resin and silicone by two-well established cell culture methods. METHODOLOGY:Specimens of AH Plus, EndoREZ, RoekoSeal and Epiphany were prepared for direct contact in the Millipore filter diffusion test and as extrac...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2007.01321.x
更新日期:2008-01-01 00:00:00
abstract:AIM:To investigate the use of a zinc oxide/zinc sulphate-based cement (Coltosol(®) F, Coltène Whaledent, Cuyahoga Falls, OH, USA) as a temporary filling material during multiple-visit root canal treatments and the occurrence of cracks within the filling material or the tooth. METHODOLOGY:Root canals of one hundred and...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.12280
更新日期:2015-01-01 00:00:00
abstract:AIM:To investigate a potential cause-effect relationship between dentinal microcracks and fracture resistance of mandibular incisors that had not been endodontically treated. METHODOLOGY:Sixty mandibular incisors with circular-shaped canals were selected based on micro-computed tomographic scans to create a homogeneou...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.13370
更新日期:2020-11-01 00:00:00
abstract::The assurance of the quality of a service rendered by a member of the dental profession is an essential feature of any system of peer review in dentistry. This document addresses two essential elements: (i) appropriateness of treatment modality and (ii) quality or level of treatment rendered. In revising these guideli...
journal_title:International endodontic journal
pub_type: 共识发展会议,杂志文章,实务指引
doi:10.1111/j.1365-2591.2006.01180.x
更新日期:2006-12-01 00:00:00
abstract:AIM:The purpose of this study was to evaluate the influence of rotational speed, torque, and operator experience with a specific Ni-Ti rotary instrumentation technique on the incidence of locking, deformation and separation of instruments. METHODOLOGY:ProFile Ni-Ti rotary instruments (PRI) sizes 40-15 with a 6% taper ...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1046/j.1365-2591.2001.00352.x
更新日期:2001-01-01 00:00:00
abstract:AIM:To examine the surfaces of a root tip removed during surgical endodontic treatment for the presence of microorganisms. SUMMARY:The present clinical case illustrates an endodontic retreatment of a maxillary premolar tooth with a fistula and periapical reaction. The case was under treatment for 1 year, during which ...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2004.00753.x
更新日期:2004-01-01 00:00:00
abstract:AIM:To investigate the root and canal morphology of mandibular permanent teeth collected from an indigenous Turkish population. METHODOLOGY:A total of 1400 extracted mandibular permanent teeth were evaluated. The teeth were divided into seven groups as central incisors, lateral incisors, canines, first premolars, seco...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2004.00837.x
更新日期:2004-07-01 00:00:00
abstract:AIM:To apply a standardized protocol for the orofacial evaluation of two adult siblings (one male and one female) with Hereditary Sensory Radicular Neuropathy (HSRN) that presented with dental problems. SUMMARY:The systematic evaluation consisted of (a) clinical questionnaire; (b) radiographs [orthopantomography and c...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2006.01160.x
更新日期:2006-11-01 00:00:00
abstract:AIM:To investigate the impact of three irrigation protocols, activated by three different methods, on mature biofilms of Enterococcus faecalis in vitro. METHODOLOGY:Root canals in 280 single-rooted teeth were instrumented using a rotary Ni-Ti system. Biofilms of E. faecalis were generated based on a previously establi...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.12354
更新日期:2015-06-01 00:00:00
abstract:AIM:To test the chemical-physical properties and apatite-forming ability of experimental fluoride-doped calcium silicate cements designed to create novel bioactive materials for use in endodontics and oral surgery. METHODOLOGY:A thermally treated calcium silicate cement (wTC) containing CaCl(2) 5%wt was modified by ad...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2011.01907.x
更新日期:2011-10-01 00:00:00
abstract:AIM:The aim of the present study was to identify periapical changes 20-27 years after root-canal treatment. METHODOLOGY:The periapical condition of 265 roots filled by undergraduate students was evaluated in two series of intraoral radiographs taken 10-17 and 20-27 years after treatment. Roots (72) not recorded with a...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1046/j.1365-2591.2002.00568.x
更新日期:2002-09-01 00:00:00
abstract:AIM:To present examples of radiographic image reconstructions in endodontic treatment, to discuss the potential problems arising from the use of image processing software and to mention some current methods to prevent such counterfeit utilization of digital endodontic radiographs. SUMMARY:Conventional Ultra-Speed peri...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.0143-2885.2004.00780.x
更新日期:2004-03-01 00:00:00
abstract::The use of cone beam computed tomography (CBCT) in the diagnosis and/or management of endodontic problems is increasing and is reflected in the exponential rise in publications on this topic in the last two decades. The aim of this paper is to: (i) Review current literature on the endodontic applications of CBCT; (ii)...
journal_title:International endodontic journal
pub_type: 杂志文章,评审
doi:10.1111/iej.13115
更新日期:2019-08-01 00:00:00
abstract:AIM:To determine retrospectively the long-term radiographic outcome of root canal treatments and root canal retreatments with unintentional root canal overfilling. METHODOLOGY:A total of 220 root canal treatments (143 primary/77 retreatments) with postoperative unintentional canal overfilling and performed by two endo...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.13209
更新日期:2020-01-01 00:00:00
abstract:AIM:To investigate differences in the root canal morphology of permanent mandibular molar teeth at various ages. METHODOLOGY:Four hundred and eighty permanent mandibular first and second molars were examined. First and second molars were divided into six and five groups, respectively, according to the age of the patie...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2008.01428.x
更新日期:2008-10-01 00:00:00
abstract:AIM:To compare ex vivo the penetration of three brands of gutta-percha cones, compacted under a constant force and heated to different temperatures, into artificial lateral canals. METHODOLOGY:Resin blocks with simulated main canals, each having two lateral canals (C at 6.5 and A at 13 mm from the surface of the resin...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2006.01133.x
更新日期:2006-08-01 00:00:00
abstract:AIM:To investigate the prevalence of periradicular periodontitis (PRP) using cone-beam computed tomography (CBCT) scans in a retrospective cross-sectional epidemiological study in a Scottish subpopulation. METHODOLOGY:Of the 319 CBCT scans performed at Dundee Dental Hospital between November 2009 and July 2012, 245 de...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.12228
更新日期:2014-09-01 00:00:00
abstract:AIM:To evaluate the effect of a glide path on the amount of apically extruded debris during canal preparation using single-file systems in curved canals. METHODOLOGY:Ninety extracted mandibular molar teeth were randomly assigned to six groups (n = 15 for each group) for canal instrumentation. Endodontic access cavitie...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.12484
更新日期:2016-06-01 00:00:00
abstract:AIM:To describe the successful non-surgical endodontic management of a permanent maxillary lateral incisor tooth with four root canals. SUMMARY:Aberrant morphology of root canals can occur in any tooth, including maxillary lateral incisors. In the presented case, clinical examination and radiographs clearly depicted t...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2011.01984.x
更新日期:2012-04-01 00:00:00