scholarly journals Influence of different kinds of rosins and hydrogenated resins on the setting time of Grossman cements

1999 ◽  
Vol 13 (1) ◽  
pp. 83-87 ◽  
Author(s):  
Manoel Damião SOUSA NETO ◽  
Luis Fernando GUIMARÃES ◽  
Danilo Mathias Zanello GUERISOLI ◽  
Paulo César SAQUY ◽  
Jesus Djalma PÉCORA

In this study, the effect on the setting time by the addition of different kinds of rosin and hydrogenated resin on the Grossman cement powder was evaluated. The experiments were carried out following the American Dental Association’s specification number 57 for root canal sealers. For this analysis, different Grossman cement powders were prepared using different rosins (X, WW and WG) and hydrogenated resins (Staybelite and Staybelite ester 10). The study of the physicochemical properties of the Grossman cements obtained the different kinds of rosins and hydrogenated resins interference on the cement’s setting time. The hydrogenated resin, having a higher pH, increased the setting time of the cement when compared to the X, WW and WG rosins.

Author(s):  
Gabriela Cardoso Ferreira ◽  
Lucas Siqueira Pinheiro ◽  
Júlia Silveira Nunes ◽  
Roberta Almeida Mendes ◽  
Cláudia Daniela Schuster ◽  
...  

2017 ◽  
Vol 31 (0) ◽  
Author(s):  
Rafael Verardino de CAMARGO ◽  
Yara Terezinha Corrêa SILVA-SOUSA ◽  
Rodrigo Presotto Ferreira da ROSA ◽  
Jardel Francisco MAZZI-CHAVES ◽  
Fabiane Carneiro LOPES ◽  
...  

2018 ◽  
Vol 29 (1) ◽  
pp. 48-53
Author(s):  
Manuela Gonçalves de Souza e Silva ◽  
Eliseu Aldrighi Münchow ◽  
Rafael Pino Vitti ◽  
Mário Alexandre Coelho Sinhoreti ◽  
Evandro Piva ◽  
...  

Abstract The aim of this study was to synthesize and evaluate physicochemical properties of a new salicylate derivative in experimental calcium-based root canal sealers. Two salicylate derivatives were synthesized for the transesterification reaction of methyl salicylate with two different alcohols (1,3-butylenoglicol disalicylate-BD and pentaerythritol tetrasalicylate -PT) in molar ratio 1:3 and 1:6, respectively. The products (BD and PT), were characterized by Fourier Transform Infrared Spectroscopy (FTIR) and Nuclear Magnetic Resonance spectroscopy (RMN). Calcium-based experimental sealers were prepared with the same catalyst paste (60% of MTA, 39% of n-ethyl-o-toluenesulfonamide, and 1% titanium dioxide) and four different concentrations of BD and PT in the base pastes (40/0 - control, 35/5, 30/10 and 20/20) with 60% of bismuth oxide. The experimental sealers were evaluated for setting time, solubility (24 h, 7, 14 and 30 days), diametral tensile strength and Young’s Modulus. Data were analyzed by one- or two-way ANOVA with Tukey’s test (p<0.05). The addition of PT reduced the materials setting time. After 24 h the sealer 40/0 and 35/5 had higher solubility, and after 14 and 28 days the sealer 20/20 showed the lowest solubility (p<0.05). After 7 days the sealer 20/20 stabilized its solubility. The sealer 40/0 presented the highest values and the 20/20 presented the lowest values of diametral tensile strength and Young’s modulus (p<0.05). The addition of PT to calcium-based root canal sealers provides benefits to the setting time and solubility.


2021 ◽  
Vol 2 (1) ◽  
pp. 14-25
Author(s):  
Musliana Mustaffa

The use of bioceramic root canal sealers in endodontics is a promising approach because of the advantages such as improved flow properties, biocompatible and could promote the formation of hard tissue. Due to the recent technology and limited scientific evidence, the effectiveness of bioceramic root canal sealers remains unclear. This article focuses on the physicochemical properties, biocompatibility, biomineralisation, retreatability, 3D obturation and current practice of using bioceramic root canal sealers. The relevant articles for this review were searched manually from Google Scholar and PubMed using keywords ‘bioceramic root filling material AND endodontics’, ‘bioceramic root canal sealers AND endodontics’, ‘cytotoxicity AND bioceramic root canal sealers’, ‘bioceramic root canal sealers AND physicochemical properties’, ‘biomineralisation AND bioceramic root canal sealers’ and ‘retreatment efficacy AND bioceramic root filling materials’. Since the clinical data concerning the obturation with bioceramic root canal sealers is lacking, the selection of materials should be made based on the available scientific evidence, individual cases, material availability and operator’s preference.


Author(s):  
Fabiane Carneiro Lopes ◽  
Caio Zangirolami ◽  
Jardel Francisco Mazzi-Chaves ◽  
Alice Corrêa Silva-Sousa ◽  
Bruno Monguilhott Crozeta ◽  
...  

2010 ◽  
Vol 36 (9) ◽  
pp. 1531-1536 ◽  
Author(s):  
Gabriela Alessandra Marin-Bauza ◽  
Fuad Jacob Abi Rached-Junior ◽  
Aline Evangelista Souza-Gabriel ◽  
Manoel Damião Sousa-Neto ◽  
Carlos Eduardo Saraiva Miranda ◽  
...  

2017 ◽  
Vol 33 ◽  
pp. e14
Author(s):  
C.C. Borges ◽  
Y.T.C. Silva-Sousa ◽  
F.C. Lopes ◽  
A.C. Silva-Sousa ◽  
R.G. Silva ◽  
...  

2019 ◽  
Vol 7 (3) ◽  
pp. 72 ◽  
Author(s):  
Alexander Brezhnev ◽  
Prasanna Neelakantan ◽  
Ray Tanaka ◽  
Sergey Brezhnev ◽  
George Fokas ◽  
...  

Dental materials used in root canal treatment have undergone substantial improvements over the past decade. However, one area that still remains to be addressed is the ability of root canal fillings to effectively entomb, kill bacteria, and prevent the formation of a biofilm, all of which will prevent reinfection of the root canal system. Thus far, no published review has analysed the literature on antimicrobial additives to root canal sealers and their influence on physicochemical properties. The aim of this paper was to systematically review the current literature on antimicrobial additives in root canal sealers, their anti-fouling effects, and influence on physicochemical properties. A systematic search was performed in two databases (PubMed and Scopus) to identify studies that investigated the effect of antimicrobial additives in epoxy resin-based root canal sealers. The nature of additives, their antimicrobial effects, methods of antimicrobial testing are critically discussed. The effects on sealer properties have also been reviewed. A total of 31 research papers were reviewed in this work. A variety of antimicrobial agents have been evaluated as additives to epoxy resin-based sealers, including quaternary ammonium compounds, chlorhexidine, calcium hydroxide, iodoform, natural extracts, antibiotics, antifungal drugs, and antimicrobial agent-functionalised nanoparticles. Antimicrobial additives generally improved the antimicrobial effect of epoxy resin-based sealers mainly without deteriorating the physicochemical properties, which mostly remained in accordance with ISO and ANSI/ADA specifications.


2009 ◽  
Vol 42 (9) ◽  
pp. 785-793 ◽  
Author(s):  
L. M. Resende ◽  
F. J. A. Rached-Junior ◽  
M. A. Versiani ◽  
A. E. Souza-Gabriel ◽  
C. E. S. Miranda ◽  
...  

Odontology ◽  
2013 ◽  
Vol 103 (1) ◽  
pp. 61-65 ◽  
Author(s):  
Edgar Schäfer ◽  
Nele Bering ◽  
Sebastian Bürklein

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