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https://www.readbyqxmd.com/read/28223198/novel-bioactive-root-canal-sealer-to-inhibit-endodontic-multispecies-biofilms-with-remineralizing-calcium-phosphate-ions
#1
Lin Wang, Xianju Xie, Chunyan Li, Huaibing Liu, Ke Zhang, Yanmin Zhou, Xiaofeng Chang, Hockin H K Xu
OBJECTIVE: The objectives of this study were to: (1) develop a bioactive endodontic sealer via dimethylaminohexadecyl methacrylate (DMAHDM), 2-methacryloyloxyethyl phosphorylcholine (MPC) and nanoparticles of amorphous calcium phosphate (NACP) for the first time; and (2) evaluate inhibition of early-stage and mature multispecies endodontic biofilm, bond strength to root canal dentin, and calcium (Ca) and phosphate (P) ion release. METHODS: A series of bioactive endodontic sealers were formulated with DMAHDM, MPC, and NACP...
February 18, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28218959/survival-and-periapical-health-after-root-canal-treatment-with-carrier-based-root-fillings-5-year-retrospective-assessment
#2
C Pirani, S Friedman, M R Gatto, F Iacono, V Tinarelli, M G Gandolfi, C Prati
AIM: This retrospective study explored survival and periapical healing outcomes in root filled teeth with Thermafil obturators. METHODOLOGY: Root canals of 213 teeth (94 subjects, mean age 48±13 years), instrumented with a step-down technique, irrigated with 5% NaOCl and 10% EDTA and filled with Thermafil and AH-Plus sealer, were involved in a Recall programme. Teeth were retrospectively reexamined after 5±1 years in a controlled environment. Clinical and radiographic data that were collected included: preoperative Periapical Index (PAI) score and signs/symptoms, treatment type, root filling length and presence/absence of voids, restoration type, follow-up PAI score and signs/symptoms...
February 20, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28216270/are-premixed-calcium-silicate-based-endodontic-sealers-comparable-to-conventional-materials-a-systematic-review-of-in%C3%A2-vitro-studies
#3
REVIEW
Luiza Helena Silva Almeida, Rafael Ratto Moraes, Renata Dornelles Morgental, Fernanda Geraldo Pappen
INTRODUCTION: This study aimed to compare the physicochemical and biological properties of premixed calcium silicate-based endodontic sealers with other conventional root canal filling materials by systematically reviewing laboratory studies. METHODS: The search was conducted in 3 databases (Medline via PubMed, Scopus, and Web of Science) following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Two reviewers independently selected the studies and extracted the data...
February 16, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28216267/dentinal-tubule-penetration-of-a-calcium-silicate-based-root-canal-sealer-with-different-obturation-methods
#4
Ji Wook Jeong, Anna DeGraft-Johnson, Samuel O Dorn, Peter M Di Fiore
INTRODUCTION: The purpose of this study was to investigate the depths of penetration of a calcium silicate-based sealer in dentinal tubules by using 3 different obturation methods. METHODS: One hundred extracted human permanent anterior teeth were endodontically prepared and divided equally into 3 experimental groups and 1 control group as follows: CPoint single cone (CPSC), gutta-percha single cone (GPSC), gutta-percha vertical condensation (GPVC), all with a calcium silicate-based sealer and calcium indicator Fluo-3, and CPoint single cone with a calcium indicator Fluo-3 (CPF3) without sealer as the control...
February 16, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28210439/effect-of-endoactivator-and-er-cr-ysgg-laser-activation-of-qmix-as-final-endodontic-irrigant-on-sealer-penetration-a-confocal-microscopic-study
#5
Sarika Chaudhry, Sudha Yadav, Sangeeta Talwar, Mahesh Verma
BACKGROUND: Through chemomechanical debridement of the root canal is a primary requisite for successful endodontic therapy. Thus the aim of this study was to evaluate the effects of using QmiX alone, QmiX with EndoActivator and QmiX with Er,Cr:YSGG laser for final irrigation on sealer penetration into the dentinal tubules. MATERIAL AND METHODS: 75 extracted human mandibular premolar teeth were treated with sodium hypochlorite (NaOCl) irrigation. The samples were divided into 5 groups according to the final irrigation solution used: (1) 17% EDTA and 2...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210204/physicochemical-properties-of-epoxy-resin-based-and-bioceramic-based-root-canal-sealers
#6
Ju Kyung Lee, Sang Won Kwak, Jung-Hong Ha, WooCheol Lee, Hyeon-Cheol Kim
Three bioceramic sealers (EndoSequence BC sealer, EndoSeal MTA, and MTA Fillapex) and three epoxy resin-based sealers (AH-Plus, AD Seal, and Radic-Sealer) were tested to evaluate the physicochemical properties: flow, final setting time, radiopacity, dimensional stability, and pH change. The one-way ANOVA and Tukey's post hoc test were used to analyze the data (P = 0.05). The MTA Fillapex sealer had a highest flow and the BC Sealer presented a flow significantly lower than the others (P < 0.05). The BC Sealer and MTA Fillapex samples were not set in humid incubator condition even after one month...
2017: Bioinorganic Chemistry and Applications
https://www.readbyqxmd.com/read/28209004/comparison-of-sealer-penetration-by-using-different-irrigation-techniques-an-in-vitro-study
#7
Prabu Mahin Syed Ismail, Siddiq Ahamed, P B Sabiha, M Chandra Sekhar, Gopikrishna Moosani, S Nagalakshmi Reddy, N Upendranatha Reddy, C H Sumanthi
INTRODUCTION: The main goal of root canal treatment is to eliminate the microorganisms particularly in the apical third area and to prevent re-infection. In order to achieve these goals the instrumentation must be combined with adequate irrigation. AIM: To compare sealer penetration by using different irrigation techniques i.e., apical negative pressure irrigation, Passive Ultrasonic Irrigation (PUI) and combination of apical negative pressure irrigation and PUI...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28194361/post-space-preparation-timing-of-root-canals-sealed-with-ah-plus-sealer
#8
Hae-Ri Kim, Young Kyung Kim, Tae-Yub Kwon
OBJECTIVES: To determine the optimal timing for post space preparation of root canals sealed with epoxy resin-based AH Plus sealer in terms of its polymerization and influence on apical leakage. MATERIALS AND METHODS: The epoxy polymerization of AH Plus (Dentsply DeTrey) as a function of time after mixing (8, 24, and 72 hours, and 1 week) was evaluated using Fourier transform infrared (FTIR) spectroscopy and microhardness measurements. The change in the glass transition temperature (Tg ) of the material with time was also investigated using differential scanning calorimetry (DSC)...
February 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28194360/retreatability-of-two-endodontic-sealers-endosequence-bc-sealer-and-ah-plus-a-micro-computed-tomographic-comparison
#9
Enrique Oltra, Timothy C Cox, Matthew R LaCourse, James D Johnson, Avina Paranjpe
OBJECTIVES: Recently, bioceramic sealers like EndoSequence BC Sealer (BC Sealer) have been introduced and are being used in endodontic practice. However, this sealer has limited research related to its retreatability. Hence, the aim of this study was to evaluate the retreatability of two sealers, BC Sealer as compared with AH Plus using micro-computed tomographic (micro-CT) analysis. MATERIALS AND METHODS: Fifty-six extracted human maxillary incisors were instrumented and randomly divided into 4 groups of 14 teeth: 1A, gutta-percha, AH Plus retreated with chloroform; 1B, gutta-percha, AH Plus retreated without chloroform; 2A, gutta-percha, EndoSequence BC Sealer retreated with chloroform; 2B, gutta-percha, EndoSequence BC Sealer retreated without chloroform...
February 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28179934/antifungal-activity-of-two-root-canal-sealers-against-different-strains-of-candida
#10
Farnaz Jafari, Sanaz Jafari, Hossein Samadi Kafil, Tahereh Momeni, Helen Jamloo
INTRODUCTION: Microorganisms and microbial products are the main etiologic factors in pulp and periapical diseases. The present study aimed to compare the antifungal activity of two different sealers, AH-26 and MTA Fillapex against three strains of Candida, 24, 48, 72 h and 7 days after mixing. METHODS AND MATERIALS: The microorganisms used in this study were Candidia albicans (ATCC 10231), Candidia glabrata (ATCC 90030) and Candidia krusei (DSM 70079). This test was based on growth of microorganisms and turbidity measurement technique using a spectrophotometer...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28179924/fracture-resistance-of-roots-after-application-of-different-sealers
#11
Fatemeh Dibaji, Farzaneh Afkhami, Babak Bidkhori, Mohammad Javad Kharazifard
INTRODUCTION: Vertical root fracture inevitably leads to tooth extraction. Thus, root filling with obturating materials and sealers that can reinforce the tooth would be an ideal way to reduce fracture in root treated teeth. This study aimed to assess the fracture resistance of roots following the application of different sealers including Epiphany, iRoot sealer and AH-plus. METHODS AND MATERIALS: Fifty extracted human single-canal premolars without caries, curvature or cracks were used in this study...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28179922/scanning-electron-microscopic-evaluation-of-the-sealer-dentine-interface-of-three-sealers
#12
Fatemeh Mohammadian, Farzad Farahanimastary, Fatemeh Dibaji, Mohammad Javad Kharazifard
INTRODUCTION: This study aimed to evaluate the dentine-sealer interface in three different sealers using scanning electron microscopy (SEM). METHODS AND MATERIALS: Thirty extracted human single-rooted teeth were prepared using ProTaper rotary files and were randomly divided into three groups (n=10) including BC Sealer, AH-Plus and Dorifill. The root canals were filled with cold lateral condensation technique and stored for 7 days in 100% humidity at 37(°)C. Cross sections were prepared from the coronal, middle, and apical sections of the roots...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28179919/the-efficacy-of-passive-ultrasonic-activation-of-organic-solvents-on-dissolving-two-root-canal-sealers
#13
Letícia Trevisan, Isadora Razzera Huerta, Carina Michelon, Mariana De Carlo Bello, Rafael Pillar, Carlos Alexandre Souza Bier
INTRODUCTION: The aim of this in vitro study was to evaluate the dissolving efficacy of eucalyptol and orange oil solvents associated with passive ultrasonic activation (PUA) in zinc oxide-eugenol (ZOE) based and epoxy resin-based root canal sealers. METHODS AND MATERIALS: Seventy samples of each sealer were prepared and then randomized according to the solvent and the time of the ultrasonic activation (n=5). The mean amount of weight loss of sealers was calculated in percentages and was analyzed by using the Kruskal-Wallis and Bonferroni post-hoc tests...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28177560/effects-of-an-endodontic-auxiliary-chemical-substance-on-the-bond-strength-of-two-methacrylate-based-endodontic-sealers-to-dentin
#14
Roger Nicolini Fuzinatto, Ana Paula Farina, Matheus Albino Souza, Daniela Cristina Miyagaki, Caio Cézar Randi Ferraz, Doglas Cecchin
PURPOSE: To evaluate the influence of irrigation protocols and drying procedures on the bond strength of two methacrylate-based sealers to dentin and the associated failure pattern using scanning electron microscopy (SEM). MATERIALS AND METHODS: Fifty single-rooted human teeth were prepared with an irrigation protocol using either 5.25% sodium hypochlorite (NaOCl) or 2% chlorhexidine (CHX) and 17% EDTA (ethylenediaminetetraacetic acid) for smear layer removal. The following subgroups were also created based on drying of the root canal walls: paper points, the canals were blot dried with paper points with the last one appearing dry; or, ethanol, excess distilled water was removed with paper points followed by dehydration with 95% ethanol for 1 min and blotting with paper points...
February 8, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28149466/effect-of-two-contemporary-root-canal-sealers-on-root-canal-dentin-microhardness
#15
Maram E Khallaf
BACKGROUND: Successful root canal treatment depends on proper cleaning, disinfecting and shaping of the root canal space. Pulpless teeth have lower dentin microhardness value compared to that of vital teeth. A material which can cause change in dentin composition may affect the microhardness. Thus the aim of this study was to evaluate and compare the effect of two root canal sealers on dentin microhardness. MATERIAL AND METHODS: Forty two single rooted teeth were selected and divided into 3 equal groups; Apexit, iRootSP and control groups (n=14) Each group was then divided into 2 subgroups according to the post evaluation period; 1 week and 2 months (n=7)...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28149464/sealing-efficacy-of-system-b-versus-thermafil-and-guttacore-obturation-techniques-evidenced-by-scintigraphic-analysis
#16
Manuel Marques-Ferreira, Margarida Abrantes, Hugo-Diogo Ferreira, Francisco Caramelo, Maria-Filomena Botelho, Eunice-Virgínia Carrilho
BACKGROUND: This study compared root canal sealing ability, filled by Continuous Wave compaction and two carrier-based obturation systems, using the nuclear medicine approach. MATERIAL AND METHODS: Fifty-five single-rooted extracted teeth were selected. The crowns were sectioned and each tooth was instrumented using rotary Protaper® Universal system. The roots were divided into 3 experimental groups and two control groups. Forty-five root canals were filled, using Continuous Wave, GuttaCore or Thermafil system and TopSeal sealer...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28149460/neurotoxicity-evaluation-of-three-root-canal-sealers-on-cultured-rat-trigeminal-ganglion-neurons
#17
Kursat Er, Ahmet Ayar, Omer-Faruk Kalkan, Sinan Canpolat, Tamer Tasdemir, Ulku Ozan
BACKGROUND: The aim of this study was to investigate the possible neurotoxic effects of 3 root canal sealers (RCSs) (AH Plus, GuttaFlow, iRoot SP) on cultured rat trigeminal ganglion (TG) neurons. MATERIAL AND METHODS: Primary cultures of TG neurons were obtained from 1 to 2-day old rats. Freshly mixed RCSs were incubated in sterile phosphate buffered saline and cells were incubated with supernatants of the RCSs for different time intervals (1-, 3-, 6- and 24-h; 1 or 1/10 diluted) and viability/cytotoxicity was tested by counting the number of live cells...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28146218/influence-of-solvents-on-the-bond-strength-of-resin-sealer-to-intraradicular-dentin-after-retreatment
#18
Marcelo Palhais, Manoel Damião Sousa-Neto, Fuad Jacob Abi Rached-Junior, Mariana Carvalho de Andrade Amaral, Edson Alfredo, Carlos Eduardo Saraiva Miranda, Yara Teresinha Corrêa Silva-Sousa
This study evaluated the removal of filling material with ProTaper Universal Rotary Retreatment system (PTR) combined with solvents and the influence of solvents on the bond strength (PBS) of sealer to intraradicular dentin after canal reobturation. Roots were endodontically treated and distributed to five groups (n = 12). The control group was not retreated. In the four experimental groups, canals were retreated with PTR alone or in combination with xylol, orange oil, and eucalyptol. After filling material removal, two specimens of each group were analysed by SEM and µCT to verify the presence of filling remnants on root canal walls...
January 26, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28131411/effectiveness-of-the-protaper-next-and-reciproc-systems-in-removing-root-canal-filling-material-with-sonic-or-ultrasonic-irrigation-a-micro-computed-tomographic-study
#19
Milena Perraro Martins, Marco Antonio Hungaro Duarte, Bruno Cavalini Cavenago, Augusto Shoji Kato, Carlos Eduardo da Silveira Bueno
INTRODUCTION: The aim of this study was to evaluate the effectiveness of ProTaper Next (Dentsply Maillefer, Ballaigues, Switzerland) and Reciproc (VDW, Munich, Germany) systems in removing filling material from oval root canals using sonic or ultrasonic irrigation as additional cleaning methods. METHODS: Thirty-two human extracted mandibular premolars with oval canals were prepared using the ProTaper Universal system (Dentsply Maillefer) up to instrument F4 (40/...
January 25, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28001242/effect-of-the-time-point-of-acid-etching-on-the-persistence-of-sealer-residues-after-using-different-dental-cleaning-protocols
#20
Keren Cristina Fagundes Jordão-Basso, Milton Carlos Kuga, Matheus Coêlho Bandéca, Marco Antonio Hungaro Duarte, Flávia Angélica Guiotti
Endodontic sealer residues remaining within the pulp chamber dentin after root canal obturation and cleaning with various solvents may compromise the appearance and the durability of dental restorations. Acid etching is routinely performed prior to application of dentine adhesive systems, but is effect on residual sealer material and the optimal time-point for performing etching, are unknown. Here, we evaluated the effect of acid etching on the dentin surface when performed either immediately or 7 days after removal of the endodontic sealer with two solvents, i...
December 22, 2016: Brazilian Oral Research
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