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https://www.readbyqxmd.com/read/29336881/influence-of-contracted-endodontic-access-on-root-canal-geometry-an-in%C3%A2-vitro-study
#1
Mario Alovisi, Damiano Pasqualini, Edoardo Musso, Elena Bobbio, Carlotta Giuliano, Davide Mancino, Nicola Scotti, Elio Berutti
INTRODUCTION: Contracted endodontic cavities (CECs) have developed from the concept of minimally invasive dentistry and provide an alternative to traditional endodontic cavities (TECs). They have been designed in an effort to preserve the mechanical stability of teeth. The contracted cavity design preserves more of the dentin but may influence the geometric shaping parameters. The aim of this micro-computed tomographic study was to evaluate the influence of contracted endodontic cavities on the preservation of the original root canal anatomy after shaping with nickel-titanium rotary instruments...
January 12, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29336879/effect-of-dynamic-immersion-in-sodium-hypochlorite-and-edta-solutions-on-cyclic-fatigue-resistance-of-waveone-and-waveone-gold-reciprocating-nickel-titanium-files
#2
Gülşah Uslu, Taha Özyürek, Koray Yılmaz, Gianluca Plotino
INTRODUCTION: The purpose of this study was to evaluate the effect of sodium hypochlorite (NaOCl) and EDTA solutions on the cyclic fatigue resistance of WaveOne (WO) and WaveOne Gold (WOG) nickel-titanium reciprocating files. METHODS: A hundred WO (25/.08), and 100 WOG (25/.07) were randomly divided into 5 groups: group 1, no immersion; group 2, immersion in 5.25% NaOCl at 37°C ± 1°C for 5 minutes; group 3, immersion in 5.25% NaOCl at 37°C ± 1°C for 10 minutes; group 4, immersion in 17% EDTA at 37°C ± 1°C for 5 minutes; and group 5, immersion in 17 % EDTA at 37°C ± 1°C for 10 minutes...
January 12, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29336522/continued-root-maturation-despite-persistent-apical-periodontitis-of-immature-permanent-teeth-after-failed-regenerative-endodontic-therapy
#3
Louis M Lin, Sahng G Kim, Gabriela Martin, Bill Kahler
Three immature permanent teeth with pulp necrosis and apical periodontitis were treated with regenerative endodontic therapy (RET), which included root canal disinfection with sodium hypochlorite irrigation, intra-canal medication with calcium hydroxide paste, 17% EDTA rinse, induction of periapical bleeding into the canal, collagen matrix and MTA coronal seal, and composite resin restoration of access cavities. After different periods of follow-up, it was observed that continued root maturation, especially apical closure occurred despite persistent apical periodontitis of immature permanent teeth after failed RET...
January 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/29326515/scanning-electron-microscopic-evaluation-of-efficacy-of-17-ethylenediaminetetraacetic-acid-and-chitosan-for-smear-layer-removal-with-ultrasonics-an-in-vitro-study
#4
Aradhana Babu Kamble, Sathish Abraham, Deepak Dadarao Kakde, C Shashidhar, Disha Lalit Mehta
Introduction: The main aim of root canal treatment is cleaning, shaping and then obturating three dimensionally to prevent reinfection. This includes chemicomechanical cleansing by instrumentation and the use of irrigating solutions. Therefore, the purpose of this study was to compare the smear layer removal from root canal dentine subjected to two root canal irrigants, 17% EDTA and 0.2% Chitosan, a new irrigant using Scanning Electron Microscope. Methodology: 40 single rooted premolars were decoronated followed by instrumentation with I Race files and intermediate irrigation with 3% sodium hypochlorite and activation with ultrasonics...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29326512/evaluating-the-effect-of-different-conditioning-agents-on-the-shear-bond-strength-of-resin-modified-glass-ionomers
#5
Namith Rai, Rajaram Naik, Ravi Gupta, Shobana Shetty, Amith Singh
Aim of the Study: This study aims to evaluate the effects three different conditioning agents on the shear bond strength of resin-modified glass ionomers to human dentin. Materials and Methods: One hundred and twenty recently extracted, caries-free premolars and molars will be cleaned of debris and disinfected in a 0.5% solution of sodium hypochlorite and sterile water for 30 min. The occlusal surface of each tooth will be reduced using conventional model trimmer with water to produce the dentin surface...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29326505/influence-of-intracanal-irrigants-on-coronal-fracture-resistance-of-endodontically-treated-and-bleached-teeth-an-in-vitro-study
#6
Maryam Khoroushi, Fatemeh Tavakol, Farinaz Shirban, Sanaz Ziaei
Background: Irrigation has a key role in the success of endodontic treatment. Intracanal irrigant solutions have adverse effects on the physical properties of dentin. Aim: The present study aimed to evaluate the effect of different irrigation protocols on coronal fracture resistance of endodontically treated teeth undergoing bleaching treatment. Design and Materials and Methods: Access cavities were prepared in 120 maxillary premolars which were divided into two groups (n = 60) - Group A: nonbleached, Group B: bleached (B)...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29322644/rosemary-castor-oils-and-propolis-extract-activity-against-candida-albicans-and-alterations-on-properties-of-dental-acrylic-resins
#7
Daiane Heidrich, Carmen Beatriz Borges Fortes, Aline Taís Mallmann, Clarissa Machado Vargas, Paula Borges Arndt, Maria Lúcia Scroferneker
PURPOSE: To evaluate the in vitro activity of 8% rosemary, 2% castor oils, and 12% propolis glycolic extract against Candida albicans, as well as the physical changes of properties in colorless and pink acrylic resins after immersion in these liquids. MATERIALS AND METHODS: Colorimetric, roughness, and Knoop microhardness assays were evaluated in 25 specimens distributed into five groups (3 test groups and 2 control groups - distilled water and hypochlorite 1%), totaling five specimens per group for each acrylic resin (colorless and pink)...
January 11, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29320233/antibacterial-activities-of-hibiscus-sabdariffa-extracts-and-chemical-sanitizers-directly-on-green-leaves-contaminated-with-foodborne-pathogens
#8
Carlos A Gómez-Aldapa, Esmeralda Rangel-Vargas, Ma Refugio Torres-Vitela, Angélica Villarruel-López, Otilio A Acevedo-Sandoval, Alberto J Gordillo-Martínez, Angélica Godínez-Oviedo, Javier Castro-Rosas
Leafy greens have been associated with foodborne disease outbreaks in different countries. To decrease microbial contamination of leafy greens, chemical agents are commonly used; however, a number of studies have shown these agents to have limited antimicrobial effect against pathogenic bacteria on vegetables. The objective of this study was to compare the antibacterial effect of Hibiscus sabdariffa calyx extracts (water, methanol, acetone, and ethyl acetate), sodium hypochlorite, acetic acid, and colloidal silver against foodborne bacteria on leafy greens...
January 10, 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29310877/effects-of-different-peracetic-acid-formulations-on-post-space-radicular-dentin
#9
Lauriê Garcia Belizário, Milton Carlos Kuga, Gabriela Mariana Castro-Núñez, Wilfredo Gustavo Escalante-Otárola, Marcus Vinicius Reis Só, Jefferson Ricardo Pereira
STATEMENT OF PROBLEM: The optimal irrigating solution with antimicrobial and dentin cleansing properties for post space preparation for fiber posts is unclear. Peracetic acid is one option but is available in various chemical formulations that require evaluation. PURPOSE: The purpose of this in vitro study was to evaluate dentin surface cleanliness based on the presence of a smear layer and the number of open dentin tubules. It also investigates the chemical composition of residues after canal irrigation with a 1% peracetic acid solution (PA) at low or high concentration of hydrogen peroxide during the preparation of intracanal fiber posts...
January 5, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29310874/disinfection-of-polyvinyl-siloxane-impression-material-by-gaseous-ozone
#10
Hakki Celebi, Emine Begüm Büyükerkmen, Emrah Torlak
STATEMENT OF PROBLEM: Impression materials must be disinfected to avoid cross-contamination before they are sent to the dental laboratory. However, whether aqueous state disinfectants affect material wettability is unclear. PURPOSE: The purpose of this in vitro study was to compare the efficacy of gaseous ozone and sodium hypochlorite (NaOCl) in disinfecting light-body consistency hydrophilized polyvinyl siloxane (PVS) impression specimens inoculated with a cocktail of Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Enterococcus faecalis...
January 5, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29306533/microbial-analysis-of-endodontic-infections-in-root-filled-teeth-with-apical-periodontitis-before-and-after-irrigation-using-pyrosequencing
#11
Homan Zandi, Anne K Kristoffersen, Dag Ørstavik, Isabela N Rôças, José F Siqueira, Morten Enersen
INTRODUCTION: The root canal microbiota in root-filled teeth with post-treatment apical periodontitis before and after chemomechanical instrumentation and irrigation with either 1% sodium hypochlorite (NaOCl) or 2% chlorhexidine digluconate were analyzed by using the pyrosequencing method. METHODS: Samples from 10 root-filled teeth with apical periodontitis undergoing retreatment were taken before (S1) and after (S2) preparation using irrigation with either NaOCl (n = 5) or 2% chlorhexidine digluconate (n = 5)...
January 3, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29304987/limitations-of-a-randomized-clinical-trial-s-results-in-uncertainty-about-relative-effects-of-formocresol-versus-sodium-hypochlorite-in-primary-molars-undergoing-pulpotomy
#12
Romina Brignardello-Petersen
No abstract text is available yet for this article.
December 29, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29303755/the-effect-of-edta-on-the-antibacterial-activity-of-sodium-hypochlorite
#13
Rita Azevedo Senna, Andressa Raquel Spohr, Andressa Heberle Gastmann, Fernanda Geraldo Pappen, Regina Karla de Pontes Lima, Renata Dornelles Morgental
The combination of ethylenediaminetetraacetic acid (EDTA) and sodium hypochlorite (NaOCl) has been suggested as an irrigant for root canal therapy. However, the chemical interaction between these agents is a complex subject that is not completely understood. The aim of this study was to evaluate the interference of an EDTA chelating agent in the antibacterial ability of NaOCl, while also considering variations in methodology. Various concentrations of NaOCl and EDTA solutions were prepared from 6% and 17% solutions, respectively...
January 2018: General Dentistry
https://www.readbyqxmd.com/read/29302283/smear-layer-removal-evaluation-of-different-protocol-of-bio-race-file-and-xp-endo-finisher-file-in-corporation-with-edta-17-and-naocl
#14
Vahid Zand, Hadi Mokhtari, Mohammad-Frough Reyhani, Neda Nahavandizadeh, Shahram Azimi
Background: The aim of the present study was to compare the amount of the smear layer remaining in prepared root canals with different protocols of Bio RaCe files and XP-endo Finisher file (XPF) in association with 17% EDTA and sodium hypochlorite solution. Material and Methods: A total of 68 extracted single-rooted teeth were randomly divided into 4 experimental groups (n=14) and two control groups (n=6). The root canals were prepared with Bio RaCe files (FKG Dentaire, Switzerland) using the crown-down technique based on manufacturer's instructions and irrigated according to the following irrigation techniques: Group 1: XPF with 2 mL of 2...
November 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29298999/comparison-of-decontamination-efficacy-of-cleaning-solutions-on-a-biological-safety-cabinet-workbench-contaminated-by-cyclophosphamide
#15
Apolline Adé, Laure Chauchat, Johann-François Ouellette Frève, Sébastien Gagné, Nicolas Caron, Jean-François Bussières
Background: Several studies have compared cleaning procedures for decontaminating surfaces exposed to antineoplastic drugs. All of the cleaning products tested were successful in reducing most of the antineoplastic drug quantities spilled on surfaces, but none of them completely removed residual traces. Objective: To assess the efficacy of various cleaning solutions for decontaminating a biological safety cabinet workbench exposed to a defined amount of cyclophosphamide...
November 2017: Canadian Journal of Hospital Pharmacy
https://www.readbyqxmd.com/read/29287464/stability-of-alternariol-and-alternariol-monomethyl-ether-during-food-processing-of-tomato-products
#16
N Estiarte, A Crespo-Sempere, S Marín, A J Ramos, R W Worobo
The stability of two Alternaria mycotoxins, alternariol (AOH) and alternariol monomethyl ether (AME), has been investigated during the food processing of tomato products simulating commercial processing conditions. The production stages assessed were the storage of raw fruits, fruit washing, and thermal processing. It was observed that time of storage significantly reduced the initial concentration of AOH, but only if tomatoes were stored at 35 °C. For AME, 12 h were sufficient to reduce the initial concentration, regardless of the temperature at which samples were stored (25, 30 and 35 °C)...
April 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29285081/relevance-of-the-clustered-regularly-interspaced-short-palindromic-repeats-of-enterococcus-faecalis-strains-isolated-from-retreatment-root-canals-on-periapical-lesions-resistance-to-irrigants-and-biofilms
#17
Zhongchun Tong, Yu Du, Junqi Ling, Lijia Huang, Jinglei Ma
A high prevalence of Enterococcus faecalis (E. faecalis) is observed in teeth with root canal treatment failures. Clustered regularly interspaced short palindromic repeats (CRISPR) are widely distributed in prokaryotes that have adaptive immune systems against mobile elements, including pathogenic genes. The present study investigated the relevance of the CRISPR in E. faecalis strains isolated from retreated root canals on biofilms, periapical lesions and drug resistance. A total of 20 E. faecalis strains were extracted from the root canals of teeth referred for root canal retreatment...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29284963/evaluation-of-push-out-bond-strength-of-fiber-post-after-treating-the-intra-radicular-post-space-with-different-post-space-treatment-techniques-a-randomized-controlled-in-vitro-trial
#18
Sebeena Mathew, Iswarya R Raju, C P Sreedev, K Karthick, T Boopathi, N T Deepa
Objective: The aim of this study was to evaluate the push out bond strength after treating the post space with different irrigation procedures. Study Design: The study sample comprised of 60 recently extracted premolars. These teeth were placed in 5.25% sodium hypochlorite solution for 5 min and then washed under tap water. De-coronated samples were biomechanically prepared until F3 ProTaper and obturated using AH-Plus and 30# (6%) gutta-percha. The specimens were allowed to set for 24 h and then post space was prepared...
November 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/29284939/a-comparative-evaluation-of-intraradicular-smear-removal-efficacy-of-2-chitosan-low-molecular-weight-4-chitosan-citrate-and-10-citric-acid-when-used-as-final-rinse-in-irrigation-protocols-a-field-emission-scanning-electron-microscopic-study
#19
M Praveen, G Aarthi, P K Meenapriya, S Senthil Kumar, N S Mohan Kumar, J V Karunakaran
Aim: This study aims to compare the smear layer removal efficacy of 2% chitosan (low molecular weight) (C-LMV), 4% chitosan citrate (CC), and 10% citric acid (CA) when used in specific irrigant protocols. Materials and Methods: A total of 60 single-rooted maxillary incisors and canines were decoronated, standardized to a root length of 15 mm, and prepared with rotary files up to protaper F3 size. Sodium hypochlorite was used as initial rinse [8 ml]. The samples were divided into experimental (Group III, IV, V, and VI) (n = 10) and control groups (I - 17% EDTA, II - normal saline) (n = 5) based on the type of final rinse solution (5 ml) used, that is, 2% C-LMV, 4% C-citrate, 10% CA, and 1% acetic acid...
November 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/29284095/three-year-effects-of-deproteinization-on-the-in-vitro-durability-of-resin-dentin-eroded-interfaces
#20
Fsf Siqueira, Afm Cardenas, G M Gomes, A C Chibinski, Omm Gomes, M C Bandeca, A D Loguercio, J C Gomes
OBJECTIVE: To evaluate the effect of sodium hypochlorite on the immediate and three-year bonding properties of a resin-eroded dentin interface produced by one of two adhesive strategies. METHODS AND MATERIALS: Forty-eight molars were randomly assigned to six experimental groups, according to the combination of the adhesive strategy (etch-and-rinse and self-etch) and the dentin surface (control groups without erosion, eroded dentin surface [ED], and eroded dentin surface + NaOCl 5...
January 2018: Operative Dentistry
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