Abstract:
:The aims of this study were to compare Resilon (Resilon Research LLC, Madison, CT) in conjunction with either a bonding (Epiphany; Pentron Clinical Technologies, Wallingford, CT) or a nonbonding endodontic sealer (Pulp Canal Sealer; Kerr Corporation, Orange, CA) to EndoRez (Ultradent Products Inc, South Jordan, UT) and gutta-percha with regards to the physical properties and flexural stress in standardized dentin cylinders and the flexural stress of Resilon and gutta-percha. The external surface of 50 maxillary central incisors was reduced by means of mechanical milling to obtain dentin cylinders with an external diameter of 3 mm and minimum length of 12 mm. Root canals were prepared to obtain a standardized cylindrical preparation of 1.3 mm in diameter at the center of the root. The cylinders were randomly divided into five groups (n = 10): group 1: obturation with gutta-percha and Pulp Canal Sealer; group 2: obturation with Resilon, Epiphany primer, and Epiphany; group 3: obturation with Resilon and Pulp Canal Sealer; group 4: obturation with EndoRez methacrylate-based endodontic sealer; and group 5: dentin cylinders were not obturated. Ten gutta-percha (group 6) and Resilon (group 7) pellets for the Obtura gun were also tested. A three-point bending test was used to measure the maximum load values of specimens from groups 1 to 5 and the flexural strength and flexural modulus values for specimens from groups 6 and 7. Statistical analysis was performed to determine significance differences (p < 0.05). An analysis of variance test showed no significant difference among groups 1 to 5 (p = 0.697; F = 0.60). An independent sample t test showed statistically significant differences between groups 6 and 7 in flexural strength (p = 0.000) and flexural modulus (p = 0.000). Within the limits of this study, it may be concluded that the currently available endodontic-filling materials and their recommended adhesive procedures are not able to influence the mechanical properties of root canal dentin and that the flexural properties of Resilon and gutta-percha are too low to reinforce roots.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Grande NM,Plotino G,Lavorgna L,Ioppolo P,Bedini R,Pameijer CH,Somma Fdoi
10.1016/j.joen.2007.02.018subject
Has Abstractpub_date
2007-07-01 00:00:00pages
859-63issue
7eissn
0099-2399issn
1878-3554pii
S0099-2399(07)00212-9journal_volume
33pub_type
杂志文章,随机对照试验abstract:INTRODUCTION:The aim of the present study was to investigate the influence of root-end preparation and filling material on endodontic surgery outcome. A systematic review and meta-analysis was conducted to determine the outcome of resin-based endodontic surgery (RES, the use of high-magnification preparation of a shall...
journal_title:Journal of endodontics
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.joen.2018.02.021
更新日期:2018-06-01 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:INTRODUCTION:Vertical root fractures (VRFs) are among the most frequent causes of tooth loss, mainly of endodontically treated teeth. However, very few data is available about the occurrence of VRFs following apical surgery. METHODS:Patient charts from 864 patients with 1058 teeth treated with apical surgery (Septembe...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2020.10.012
更新日期:2021-02-01 00:00:00
abstract:INTRODUCTION:Various materials have been advocated for use as root-end filling materials. The purpose of the present in vitro study was to compare the cytotoxicity of 4 root-end filling materials: glass ionomer cement (GIC; Fuji II, GC Corp, Tokyo, Japan), reinforced zinc oxide-eugenol cement (IRM; Dentsply Tulsa Denta...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2012.09.004
更新日期:2012-12-01 00:00:00
abstract::The role of T-cells in the development of periapical lesions was investigated immunohistochemically using 16 normal (BALB/c) mice and 16 nude (BALB/c nu/nu) mice (congenitally T-cell-deficient mice). The pulp chambers of maxillar first molars of all mice were opened, and the infiltrated immunocytes (anti-Thy1.2, -Lyt-...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(06)80565-0
更新日期:1995-04-01 00:00:00
abstract:INTRODUCTION:This finite element analysis study was aimed at evaluating the effects of rotary systems on stresses in photopolymerized resin root models with oval-shaped canals. METHODS:Among the data collected by computed tomographic imaging, a mandibular second premolar tooth with an oval-shaped canal was selected, r...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2016.05.007
更新日期:2016-08-01 00:00:00
abstract::Black-pigmented bacteria (BPB) have been associated with endodontic infections. The purpose of this study was to evaluate further the presence of BPB with the clinical signs and symptoms associated with endodontic infections. Microbial samples were collected from the root canals of 40 intact teeth with necrotic pulps ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(99)80268-4
更新日期:1999-06-01 00:00:00
abstract:INTRODUCTION:Dentin regeneration could be an ideal treatment option to restore tissue function. This study was conducted to evaluate the ability of dental pulp stem cells (DPSCs) and dentin matrix protein 1 (DMP1) impregnated within a collagen scaffold to regenerate dentin. METHODS:Simulated perforations were created ...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2011.05.019
更新日期:2011-08-01 00:00:00
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...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200002000-00008
更新日期:2000-02-01 00:00:00
abstract:PURPOSE:To evaluate in vitro the solubility of the Epiphany endodontic filling material Epiphany (Pentron Clinical Technologies, Wallingford, CT) prepared with its resinous solvent. METHODS:The specimens were prepared in the following experimental conditions: (1) GI, epiphany without photoactivation; (2) GII, Epiphany...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2009.01.021
更新日期:2009-05-01 00:00:00
abstract::The aim of this study was to investigate the prevalence and configuration of the C-shaped canal using serial axial computed tomography images of the mandibular second molars that had not been restored severely or treated endodontically, and to compare the thickness of the remaining tooth structure from the center of t...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2005.10.007
更新日期:2006-01-01 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::Simulated furcation perforations were repaired with and without blood contamination utilizing tooth-colored mineral trioxide aggregrate (MTA) mixed with either MTA liquid (sterile water), lidocaine, or saline. Samples underwent Instron testing at either 24 or 72 hours and at 7 days. Data were analyzed using a 3-way AN...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2005.09.007
更新日期:2006-05-01 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:INTRODUCTION:The diagnosis and treatment planning of cracked teeth depend on the understanding of how cracks affect the surrounding tissues. This study evaluated the dentin and pulp conditions in teeth affected by cracks and attrition. METHODS:Specimens under investigation included 12 cracked posterior teeth and 8 tee...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2014.09.021
更新日期:2015-03-01 00:00:00
abstract::The aim of this study was to determine the relationship between histologic and radiologic signs of inflammation in human root-filled teeth. In addition, other factors with possible importance for apical inflammation were assessed. Fifty-three block sections of root-filled teeth were gathered from human cadavers. The b...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200402000-00003
更新日期:2004-02-01 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:INTRODUCTION:This study reports the antimicrobial effect of photodynamic therapy (PDT) combined with endodontic treatment in patients with necrotic pulp infected with microflora resistant to a previous antibiotic therapy. METHODS:Thirty anterior teeth from 21 patients with periapical lesions that had been treated with...
journal_title:Journal of endodontics
pub_type: 临床试验,杂志文章
doi:10.1016/j.joen.2010.06.001
更新日期:2010-09-01 00:00:00
abstract::The antimicrobial effect of RC-Prep and its components--10% urea peroxide, 15% EDTA, and glycol--were evaluated individually, in vitro, within dentinal tubules. Standardized bovine incisor root specimens that had been infected with either Staphylococcus aureus or Streptococcus peltzer were incubated with each agent fo...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(99)80296-9
更新日期:1999-12-01 00:00:00
abstract::The inferior alveolar nerve is sometimes affected by periapical pathoses and mandibular cysts. However, mandibular intraosseous lesions have not been reported to disturb the lingual nerve. A case of simultaneous paresthesia of the right lingual nerve and the right inferior alveolar nerve is presented. The possible mec...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/01.don.0000158011.64829.7b
更新日期:2005-10-01 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::Root resorption after replantation of mature permanent dog incisors was examined by scanning electron microscopy. Three groups consisting of three extracted teeth each were kept in a saline solution for 5, 30, and 120 min before replantation. The first group was replanted with the pulp intact. The second and third gro...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/s0099-2399(06)80996-9
更新日期:1995-05-01 00:00:00
abstract::Mineral trioxide aggregate (MTA) is being advocated for vital pulp therapy. In the case of direct pulp capping, hemorrhage control is an important step on success, but little is known about the effect of MTA on pulpal bleeding. In addition, there has been a lack of information on the effect of MTA on smooth muscle con...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2007.03.007
更新日期:2007-07-01 00:00:00
abstract::Amalgam, IRM, and a mineral trioxide aggregate were tested for repair of experimentally created root perforations. Fifty sound, extracted mandibular and maxillary molars were used in this study. A perforation was created on the mesial root surface at about a 45-degree angle to the long axis of each tooth. The tooth wa...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(06)81282-3
更新日期:1993-11-01 00:00:00
abstract:INTRODUCTION:Mineral trioxide aggregate (MTA) satisfies most of the ideal properties of a surgical root-end filling and perforation repair material. It has been found to be nontoxic, noncarcinogenic, nongenotoxic, biocompatible, insoluble in tissue fluids, and dimensionally stable and promotes cementogenesis. The major...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2012.03.013
更新日期:2012-07-01 00:00:00
abstract:INTRODUCTION:This in vitro study compared cone-beam computed tomography (CBCT) exam with different voxel sizes with digital periapical radiography in the detection of vertical root fractures in teeth with and without intracanal metallic posts. METHODS:Eighteen single-rooted human teeth were endodontically treated, pre...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.08.031
更新日期:2013-12-01 00:00:00
abstract:INTRODUCTION:This study was done to evaluate the mechanism involved in stem cell factor (SCF) expression and production by lipopolysaccharide (LPS)-stimulated odontoblast (OD)-like cells and to investigate the signal transduction pathway activated in the process. METHODS:ODs-like cells (MDPC-23) were stimulated with d...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2011.10.030
更新日期:2012-05-01 00:00:00
abstract:INTRODUCTION:This study intended to evaluate the angiogenic properties of vital pulp therapy materials including white mineral trioxide aggregate (WMTA), calcium hydroxide (Ca[OH]2), Geristore (Den-Mat, Santa Maria, CA), and nano WMTA biomaterials. METHODS:WMTA, Ca(OH)2, Geristore, and nano WMTA disks were prepared, d...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2018.02.008
更新日期:2018-05-01 00:00:00
abstract:INTRODUCTION:Sphingosine-1-phosphate receptor 1 (S1P1) is crucial for regulation of immunity and bone metabolism. This study aimed to investigate the expression of S1P1 in rat periapical lesions and its relationship with receptor activator of nuclear factor kappa B ligand (RANKL) and regulatory T (Treg) cells. METHODS...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2014.10.010
更新日期:2015-04-01 00:00:00
abstract::Amalgam cores with cemented dowels are commonly used to restore endodontically treated teeth. These restorations were widely studied for their mechanical properties; however, less is known about their sealing ability. The effect of the cement type used for the dowel and that of a bonding agent application were studied...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200104000-00015
更新日期:2001-04-01 00:00:00