Effects of Sodium Hypochlorite and Chlorhexidine Solutions on Resilon (Synthetic Polymer Based Root Canal Filling Material) Cones: An Atomic Force Microscopy Study

İsci, Sehnaz; Yoldaş, Oğuz; Dumani, Ayşin

doi:10.1016/j.joen.2006.04.001

Cited by 18 publications

(25 citation statements)

References 23 publications

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“…169 It has been concluded that Resilon cones exposed to CHX for 10, 20 and 30 minutes demonstrate residual antibacterial action and that these agents do alter cone surfaces. 170 Another study has shown the same results with one-minute immersion 165 and with NaOCl for 30 minutes. 171 By using scanning electron microscopy it has been shown that in the gutta-percha cones, NaOCl application for 10 minutes generates more irregular areas than CHX for 15 seconds and surface alteration is greater in gutta-percha than in Resilon.…”

Section: Introductionmentioning

confidence: 55%

Resilon: A Comprehensive Literature Review

Lotfi,

Ghasemi,

Rahimi

et al. 2013

Journal of Dental Research

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Section: Introductionmentioning

confidence: 55%

Resilon: A Comprehensive Literature Review

Lotfi,

Ghasemi,

Rahimi

et al. 2013

Journal of Dental Research

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“…Estes resultados estão de acordo com estudos prévios que avaliaram os efeitos na topografia por MEV 2,4,6 . Entretanto diferem daqueles que utilizaram como técnica de análise a microscopia de força atômica (AFM) [8][9][10][11] . Os resultados divergentes podem estar relacionados as diferenças metodológicas em relação às técnicas de análise.…”

Section: Discussionunclassified

“…Entretanto, prévios estudos utilizando AFM as observaram [8][9][10][11] . Novamente, as divergências estão associadas às técnicas de análise.…”

Section: Discussionunclassified

Efeito da desinfecção química nas superficies de guta-percha e Resilon

Prado

Assis²,

Simão³

2014

Rev. da Fac. de Odontologia, UPF

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Objetivo: Avaliar os efeitos das soluções de hipoclorito de sódio 5,25% (NaOCl) e clorexidina 2% (CHX) na topografia e rugosidade de superfícies de guta-percha (GP) e Resilon (RE). Materiais e método: Superfícies planas de guta-percha e Resilon foram utilizadas. Seis grupos foram avaliados: Controle GP (CGP) -guta-percha imersa em água destilada (AD) por 1 minuto; CHX GP (CHXGP) -guta-percha imersa em 15 ± 0,02/ 0,15 ± 0,01;16 ± 0,02/ 0,15 ± 0,01;17 ± 0,01/ 0,16 ± 0,02;16 ± 0,01/ 0,16 ± 0,01;16 ± 0,01/ 0,16 ± 0,16 ± 0,01/ 0,16 ± 0,01 IntroduçãoO sucesso da terapia endodôntica está associado à prevenção ou à cura das patologias perirradiculares, à ausência de sintomatologia e a sinais clíni-cos 1 . Nesse sentido, a prevenção da contaminação no sistema de canais radiculares é um importante aspecto da terapia endodôntica 2 . Durante a obturação, são utilizados cones de guta-percha ou Resilon, como material obturador principal, concomitante ao uso de cimentos endodônticos. Embora tais cones sejam fabricados em condições assépticas, eles podem ser contaminados na armazenagem ou durante seu uso na clínica 3,4 . Devido às suas características de termoplasticidade, estes materiais não podem ser esterilizados utilizando-se o processo convencional de autoclavagem. Para este fim, soluções com poder antimicrobiano como o hipoclorito de sódio e a clorexidina são utilizadas 4,5 . O efeito dessas soluções na topografia dos cones vem sendo objeto de estudo há alguns anos. Entretanto, a literatura é ainda bastante controversa nesse aspecto. Estudos utilizando microscopia eletrôni-ca e varredura (MEV) mostram, qualitativamente, não haver modificações topográficas na superfície desses materiais 2,4,6,7 . Ao passo que análises quantitativas, utilizando microscopia de força atômica, relatam modificações nessa topografia 8,11 .

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“…10,16 Nevertheless, Isci et al 9 showed that a 5.25% NaOCl solution caused physical alterations on resilon cones after 5 minutes. Moreover, Valois et al 6 observed aggressive deteriorative effects on gutta-percha cone elasticity for 5.25% NaOCl at 1 minute.…”

Section: Discussionmentioning

confidence: 99%

“…Even though gutta-percha cones are produced under aseptic conditions and have potentially antimicrobial properties, especially owing to their zinc oxide component, they can be contaminated by handling and also by aerosols and physical sources during the storage process. 2,3,8,9 Therefore, the handling of gutta-percha cones must follow the basic principles of infection control. In addition, gutta-percha cones that have been in contact with patients should be discarded.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of 2% peracetic acid for the disinfection of gutta-percha cones

et al. 2011

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The aim of this study was to evaluate the effectiveness of 2% peracetic acid for the disinfection of gutta-percha cones contaminated in vitro with Escherichia coli, Staphylococcus aureus, Streptococcus mutans, Candida albicans and Bacillus subtilus (in spore form). Two hundred and twenty-five gutta-percha cones were contaminated with standardized suspensions of each microorganism and incubated at 37°C for 24 h. The cones were divided into 10 experimental groups (n = 15), according to the microorganism tested and disinfection testing times. The disinfection procedure consisted of immersing each cone in a plastic tube containing the substance. The specimens remained in contact with the substance for 1 or 2.5 minutes. Afterwards, each cone was transferred to a 10% sodium thiosulphate solution (Na 2 S 2 O 3 ) to neutralize the disinfectant. Microbial biofilms adhering to the cones were dispersed by agitation. Aliquots of 0.1 ml of the suspensions obtained were plated on Sabouraud dextrose agar, or brain and heart infusion agar, and incubated at 37°C for 24 h. The results were expressed in colony forming units (CFU/ml) and the data were submitted to the Wilcoxon Signed Rank Test (level of significance at 0.05). A significant reduction was observed, after 1 minute of exposure, in the test solution for C. albicans (p = 0.0190), S. aureus (p = 0.0001), S. mutans (p = 0.0001), B. subtilis (p = 0.0001), and E. coli (p = 0.0001). After 2.5 minutes of exposure, 100% of the microbial inocula were eliminated. It was concluded that the 2% peracetic acid solution was effective against the biofilms of the tested microorganisms on gutta-percha cones at 1 minute of exposure.

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Effects of Sodium Hypochlorite and Chlorhexidine Solutions on Resilon (Synthetic Polymer Based Root Canal Filling Material) Cones: An Atomic Force Microscopy Study

Cited by 18 publications

References 23 publications

Resilon: A Comprehensive Literature Review

Resilon: A Comprehensive Literature Review

Efeito da desinfecção química nas superficies de guta-percha e Resilon

Effectiveness of 2% peracetic acid for the disinfection of gutta-percha cones

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