Stress Analyses of Retrograde Cavity Preparation Designs for Surgical Endodontics in the Mesial Root of the Mandibular Molar: A Finite Element Analysis-Part II.

Abstract:

INTRODUCTION:The aim of this study was to investigate the influence of apical filling material and the modification made to the apical preparation design in surgical endodontics on the areas of stress concentration in the mesial root of a mandibular molar using finite element analysis. METHODS:The filling material was injected under 2 conditions (ie, with or without mineral trioxide aggregate retrograde filling). The apical preparation design was modified by extending the preparation mesially while maintaining a similar prepared area. We contained the displacement of all the nodes at the base of the supporting bone and applied a force of 150 N to the vertical axis. We analyzed stress generation and concentrations numerically for all cavity design groups. RESULTS:In the presence of retrograde filling, the von Mises stress decreased gradually according to the enlargement of the prepared cavity in the subgroups. When the retrograde filling was absent, the von Mises stress increased as the prepared cavity enlarged. The modification of the apical preparation extending in the mesial direction showed a drastic decrease in stress concentration. CONCLUSIONS:Within the limitations of this study, it was advantageous to perform mesial retrograde preparation within the mesial root dentin to maintain a balanced root dentin on both sides of the apical preparation and create a low-stress field. The surgeon should be careful not to wash out or dislodge the retrograde filling material during obturation to avoid failure of surgery.

journal_name

J Endod

journal_title

Journal of endodontics

authors

Kim S,Chen D,Park SY,Lee CJ,Kim HC,Kim E

doi

10.1016/j.joen.2019.12.007

subject

Has Abstract

pub_date

2020-04-01 00:00:00

pages

539-544

issue

4

eissn

0099-2399

issn

1878-3554

pii

S0099-2399(19)30978-1

journal_volume

46

pub_type

杂志文章
  • Dentin extends the antibacterial effect of endodontic sealers against Enterococcus faecalis biofilms.

    abstract:INTRODUCTION:The purpose of this study was to evaluate the antimicrobial effects of root canal sealers on Enterococcus faecalis biofilms in dentinal tubules by using a novel dentin infection model. METHODS:Cells of E. faecalis were introduced into the dentinal tubules by centrifugation and incubated in brain-heart inf...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2013.10.042

    authors: Wang Z,Shen Y,Haapasalo M

    更新日期:2014-04-01 00:00:00

  • Notch Signaling Pathway in Apical Periodontitis: Correlation with Bone Resorption Regulators and Proinflammatory Cytokines.

    abstract:INTRODUCTION:The exact mechanisms of periapical bone resorption have not been fully elucidated. This study aimed to analyze the expression of Notch signaling molecules (Notch2, Jagged1, and Hey1) and proinflammatory cytokines (tumor necrosis factor alpha [TNF-α], interleukin [IL]-1β, and IL-6) in human apical periodont...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2018.10.015

    authors: Nikolic N,Jakovljevic A,Carkic J,Beljic-Ivanovic K,Miletic M,Soldatovic I,Andric M,Ivanovic V,Milasin J

    更新日期:2019-02-01 00:00:00

  • Long-term prognosis of endodontically treated teeth: a retrospective analysis of preoperative factors in molars.

    abstract:INTRODUCTION:Long-term predictability of restored endodontically treated teeth is important for the decision of tooth retention versus extraction and implant placement. The purpose of this study was to validate the hypothesis that preoperative factors can predict the long-term prognosis of molars requiring endodontic a...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2010.10.005

    authors: Setzer FC,Boyer KR,Jeppson JR,Karabucak B,Kim S

    更新日期:2011-01-01 00:00:00

  • Effect of dynamic loading on the integrity of the interface between root canal and obturation materials.

    abstract::The purpose of this study was to evaluate the effect of occlusal load on the integrity of root canal obturation. Maxillary anterior teeth were cleaned, shaped, and obturated with either gutta-percha (GP)/AH Plus or Resilon/Epiphany. Afterwards, teeth were placed under 100 N force at 2 Hz for 22 hours in a 37 degrees C...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2008.01.022

    authors: Bishop D,Griggs J,He J

    更新日期:2008-04-01 00:00:00

  • Squamous odontogenic tumor-like proliferations in radicular cysts: a clinicopathologic study of forty-two cases.

    abstract:INTRODUCTION:Squamous odontogenic tumor-like epithelial islands occurring in the walls of odontogenic cysts are histologically identical to the squamous odontogenic tumor (SOT). Microscopically, the squamous odontogenic tumor-like proliferations (SOTLPs) share certain histologic features with SOT, acanthomatous and des...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2011.02.010

    authors: Parmar RM,Brannon RB,Fowler CB

    更新日期:2011-05-01 00:00:00

  • Cyclic Fatigue Resistance of One Curve, 2Shape, ProFile Vortex, Vortex Blue, and RaCe Nickel-Titanium Rotary Instruments in Single and Double Curvature Canals.

    abstract:INTRODUCTION:The aim of this study was to evaluate and compare the resistance to cyclic fatigue of the new One Curve (OC) instrument in double (S-shaped) and single curvature canals compared with other nickel-titanium rotary instruments. METHODS:Size 25/.06 of OC, 2Shape (TS), Vortex Blue (VB), ProFile Vortex (PV), an...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2018.07.023

    authors: Elnaghy AM,Elsaka SE

    更新日期:2018-11-01 00:00:00

  • 20-year Follow-up of Recurrent Glandular Odontogenic Cyst Mimicking a Periapical Lesion.

    abstract::Periapical lesions usually are caused by root canal infection; nevertheless, other pathologies may eventually involve the tooth apex, making the correct diagnosis more difficult. Glandular odontogenic cysts (GOCs) are uncommon and, despite their cystic nature, may present an aggressive behavior and a high recurrence r...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2017.06.015

    authors: de Freitas Silva BS,Yamamoto-Silva FP,Sena-Filho M,Silva Sant'Ana SS,Mariano-Júnior WJ,de Almeida OP,Estrela C

    更新日期:2017-11-01 00:00:00

  • Nonsurgical Endodontic Treatment of Necrotic Teeth Resolved Apical Lesions on Adjacent Implants with Retrograde/Apical Peri-implantitis: A Case Series with 2-year Follow-up.

    abstract::Retrograde (or apical/periapical) peri-implantitis (RPI) presents with radiographic signs of bone loss at the periapical area of endosteal implants and may also present with clinical signs of abscess formation or a sinus tract traceable to the implant periapex. The lesion may form days up to several years after the in...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2019.01.002

    authors: Sarmast ND,Wang HH,Sajadi AS,Munne AM,Angelov N

    更新日期:2019-05-01 00:00:00

  • Evaluation of size variation between endodontic finger spreaders and accessory gutta-percha cones.

    abstract::The diameter of nine sizes of three brands of endodontic spreaders was measured at D1 and D16 and compared with corresponding sizes of six brands of accessory gutta-percha cones. Two evaluators independently measured 20 randomly selected samples of each size of finger spreader and accessory gutta-percha cone. A standa...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(07)80153-1

    authors: Hartwell GR,Barbieri SJ,Gerard SE,Gunsolley JC

    更新日期:1991-01-01 00:00:00

  • Effect of Repairing Endodontic Access Cavities on Survival of Single Crowns and Retainer Restorations.

    abstract:INTRODUCTION:This retrospective study aimed to analyze the effect of repairing endodontic access cavities with composite on the survival of single crowns and retainer restorations of fixed or removable dental prostheses. METHODS:Dental records of patients attending a university dental clinic were retrospectively scree...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2019.11.012

    authors: Wiegand A,Kanzow P

    更新日期:2020-03-01 00:00:00

  • An in vitro cyclic fatigue analysis of different endodontic nickel-titanium rotary instruments.

    abstract:INTRODUCTION:The study compared Twisted File (TF) with 3 traditionally manufactured systems to determine whether changes in the manufacturing process improved the cyclic fatigue resistance. METHODS:Four rotary file systems, (1) ProFile (PF), (2) Mtwo, (3) K3, and (4) TF, were tested in artificial canals with 45° and 9...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2011.12.034

    authors: Bhagabati N,Yadav S,Talwar S

    更新日期:2012-04-01 00:00:00

  • Risk assessment of the toxicity of solvents of gutta-percha used in endodontic retreatment.

    abstract::Three randomly assigned groups of single-canaled extracted teeth obturated with gutta-percha were retreated using controlled application of one of three organic solvents: chloroform, xylene, or halothane. Two additional groups of teeth served as positive and negative controls. Residual volume of solvent expressed thro...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(98)80098-8

    authors: Chutich MJ,Kaminski EJ,Miller DA,Lautenschlager EP

    更新日期:1998-04-01 00:00:00

  • Orthodontic procedures after trauma.

    abstract::This review considers oral trauma and its relationship to orthodontics with respect to prevention and primary, secondary, and tertiary care. The level of evidence is not high in regard to this topic, but recommendable approaches to trauma at each stage are discussed on the basis of available literature and published g...

    journal_title:Journal of endodontics

    pub_type: 杂志文章,评审

    doi:10.1016/j.joen.2012.10.030

    authors: Fields HW,Christensen JR

    更新日期:2013-03-01 00:00:00

  • Long-term seal provided by some root-end filling materials.

    abstract::A tight and long-lasting seal of root-end fillings is of prime clinical importance. A hundred standard bovine root sections, each 3 mm high and with a central pulp lumen of 2.6 mm in diameter, were filled with five commonly used or potential root-end filling materials. At 24 h, or at 3, 6, or 12 months after filling, ...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(98)80077-0

    authors: Wu MK,Kontakiotis EG,Wesselink PR

    更新日期:1998-08-01 00:00:00

  • Growth and differentiation factor-5 regulates the growth and differentiation of human dental pulp cells.

    abstract:INTRODUCTION:Growth and differentiation factor-5 (GDF-5) is a multifunctional protein that regulates the development and repair in many tissues. The purpose of this study was to investigate whether GDF-5 may influence the proliferation, differentiation, and collagen turnover of human dental pulp cells. METHODS:Human d...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2013.06.003

    authors: Chang MC,Lin LD,Tseng HC,Chang BE,Chan CP,Lee SY,Chang HH,Lin PS,Tseng SK,Jeng JH

    更新日期:2013-10-01 00:00:00

  • Extension of bactericidal effect of sodium hypochlorite into dentinal tubules.

    abstract:INTRODUCTION:The aim of this study was to determine the extent of disinfection mediated by 2 concentrations of sodium hypochlorite for bacteria-laden dentin wall of a root canal. METHODS:A dual-species film, Enterococcus faecalis and Porphyromonas gingivalis, was cultivated on root canal dentin for 7 days. The canal w...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2013.09.045

    authors: Wong DT,Cheung GS

    更新日期:2014-06-01 00:00:00

  • Characteristics and dimensions of the Schneiderian membrane and apical bone in maxillary molars referred for apical surgery: a comparative radiographic analysis using limited cone beam computed tomography.

    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

    authors: Bornstein MM,Wasmer J,Sendi P,Janner SF,Buser D,von Arx T

    更新日期:2012-01-01 00:00:00

  • Recommendations for Managing Endodontic Emergencies during Coronavirus Disease 2019 Outbreak.

    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

    authors: Silva WO,Vianna Silva Macedo RP,Nevares G,Val Rodrigues RC,Grossi Heleno JF,Braga Pintor AV,Almeida BM

    更新日期:2021-01-01 00:00:00

  • Neuropeptides in the dental pulp: distribution, origins, and correlation.

    abstract::It is known that many factors participate in the process of inflammation and pain transmission. Recently, various neuropeptides have been demonstrated in the intrapulpal nerve fibers immunobiohistochemically. These neuropeptides may play some role in the process of inflammation and transmission of pain sensation. In t...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(06)81566-9

    authors: Wakisaka S

    更新日期:1990-02-01 00:00:00

  • Is a volume of 3.6 mL better than 1.8 mL for inferior alveolar nerve blocks in patients with symptomatic irreversible pulpitis?

    abstract:INTRODUCTION:The purpose of this retrospective study was to determine the success of the inferior alveolar nerve (IAN) block using either 3.6 mL or 1.8 mL 2% lidocaine with 1:100,000 epinephrine in patients presenting with symptomatic irreversible pulpitis. METHODS:As part of 7 previously published studies, 319 emerge...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2013.04.007

    authors: Fowler S,Reader A

    更新日期:2013-08-01 00:00:00

  • A standardized novel method to measure radiographic root changes after endodontic therapy in immature teeth.

    abstract:INTRODUCTION:Outcome studies of endodontic treatment of necrotic immature permanent teeth rely on radiographic measures as surrogates of whether the treatment achieved regeneration/revascularization/revitalization. An increase in radiographic root length and/or width is thought to result in a better long-term prognosis...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2013.09.025

    authors: Flake NM,Gibbs JL,Diogenes A,Hargreaves KM,Khan AA

    更新日期:2014-01-01 00:00:00

  • The Precision of Electronic Apex Locators in Working Length Determination: A Systematic Review and Meta-analysis of the Literature.

    abstract:INTRODUCTION:This study aimed to evaluate the precision of electronic apex locators (EALs) in locating the apical constriction (AC) during a root canal treatment compared with a histologic evaluation of the AC as well as the effects of possible influencing factors by means of a systematic review of the literature and m...

    journal_title:Journal of endodontics

    pub_type: 杂志文章,meta分析,评审

    doi:10.1016/j.joen.2015.08.012

    authors: Tsesis I,Blazer T,Ben-Izhack G,Taschieri S,Del Fabbro M,Corbella S,Rosen E

    更新日期:2015-11-01 00:00:00

  • Real-time polymerase chain reaction quantification of Porphyromonas gingivalis and Tannerella forsythia in primary endodontic infections.

    abstract:INTRODUCTION:Porphyromonas gingivalis and Tannerella forsythia are anaerobic bacteria commonly involved in root canal infections. Although previous investigations have assessed these species by strictly qualitative approaches, accurate determination of their cell levels by a sensitive quantitative technique may contrib...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2009.08.005

    authors: Saito D,Coutinho LL,Borges Saito CP,Tsai SM,Höfling JF,Gonçalves RB

    更新日期:2009-11-01 00:00:00

  • Redemption of a perforated furcation with a multidisciplinary treatment approach.

    abstract::A long-standing lesion associated with an undetected perforation of the furca in a mandibular molar was successfully managed using a multidisciplinary treatment approach. The sequence of therapeutic procedures involved conventional endodontic retreatment, an initial orthograde sealing of the perforation, guided tissue...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(06)80989-1

    authors: Goon WW,Lundergan WP

    更新日期:1995-11-01 00:00:00

  • EDTA Promotes the Mineralization of Dental Pulp In Vitro and In Vivo.

    abstract:INTRODUCTION:Dentin regeneration is one of the main goals of vital pulp treatment in which the biological properties of dental pulp cells (DPCs) need to be considered. In our previous study, we showed that EDTA could enhance the stromal cell-derived factor 1 alpha-induced migration of DPCs. The purpose of this study wa...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2020.12.003

    authors: Liu L,Leng S,Tang L,Lu Q,Xu W,Tan X,Huang D,Zhang L

    更新日期:2020-12-20 00:00:00

  • Survival of the endodontic endosseous implant.

    abstract::The endodontic endosseous implant (EEI) enjoyed wide use in the United States after it was introduced in the 1960's. For various reasons including incorrect case selection, improper use of the materials, and poor preparation for the implant a high number of failures resulted. Following opposition by some members of th...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(06)81496-2

    authors: Weine FS,Frank AL

    更新日期:1993-10-01 00:00:00

  • The radicular groove: its potential clinical significance.

    abstract::This report examines three clinical cases of root-filled teeth with primary endodontic lesions. During endodontic surgery, an area of incomplete root bifurcation beginning in the coronal or middle third of the root surface and terminating at or near the apical foramen were observed. The radicular grooves of two teeth ...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1097/00004770-200005000-00012

    authors: Simon JH,Dogan H,Ceresa LM,Silver GK

    更新日期:2000-05-01 00:00:00

  • A dye penetration study of retrofilling materials.

    abstract::The apical sealing ability of amalgam, cold-burnished gutta-percha, amalgam with cavity varnish, and SuperEBA cement was evaluated in extracted human teeth. For each experimental group, the roots of 20 single-rooted teeth were sectioned from their crowns. Canals were cleaned, shaped, and obturated with vertically cond...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(89)80132-3

    authors: Tuggle ST,Anderson RW,Pantera EA Jr,Neaverth EJ

    更新日期:1989-03-01 00:00:00

  • A Retrospective Brazilian Multicenter Study of Biopsies at the Periapical Area: Identification of Cases of Nonendodontic Periapical Lesions.

    abstract:INTRODUCTION:The purpose of this study was to analyze the features of lesions obtained from biopsies at the periapical area of teeth with a radiographic or clinical initial diagnosis of apical periodontitis. METHODS:A retrospective study was conducted on biopsies obtained from 1953-2018 at 3 Brazilian oral and maxillo...

    journal_title:Journal of endodontics

    pub_type: 杂志文章,多中心研究

    doi:10.1016/j.joen.2020.01.003

    authors: Vieira CC,Pappen FG,Kirschnick LB,Cademartori MG,Nóbrega KHS,do Couto AM,Schuch LF,Melo LA,Dos Santos JN,de Aguiar MCF,Vasconcelos ACU

    更新日期:2020-04-01 00:00:00

  • New core and sealer materials for root canal obturation and retrofilling.

    abstract::A new endodontic obturation and retrofilling material has been invented to satisfy Grossman's requirements for an ideal material. Methylene blue dye leakage studies were carried out to compare the new material with conventional products, for both obturation and retrofilling. The experimental material when used in root...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1097/00004770-200207000-00008

    authors: Reeh ES,Combe EC

    更新日期:2002-07-01 00:00:00