Effect of Different Irrigation Protocols on Resin Sealer Bond Strength to Dentin

Prado, Maíra do; Simão, Renata Antoun; Gomes, Brenda Paula Figueiredo de Almeida

doi:10.1016/j.joen.2012.12.009

Cited by 86 publications

(105 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bond failure analysis after the push out test revealed that the most common types of failure mode were mixed and cohesive failure in accordance with Prado et al 28) . This indicates high bond strength of an epoxy resin sealer to root dentin.…”

Section: Discussionsupporting

confidence: 87%

“…However, in this present study, the SEM image revealed that the exposed porous collagen network remained intact even after final irrigation with 2.5% NaOCl for 1 min following 17% EDTA. This may explain those contradictory research results whether the final flush with NaOCl after 17% EDTA affects the bond strength of an epoxy resin sealer [7][8][9][10]28,29) . The use of NaOCl final flush in higher concentration or longer time period may result in collagen degradation decreasing the bond strength of an epoxy resin sealer to root dentin 10) .…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Epigallocatechin-3-gallate increased the push out bond strength of an epoxy resin sealer to root dentin

Pheenithicharoenkul

Panichuttra

2016

Dent. Mater. J.

View full text Add to dashboard Cite

This study aimed to investigate the effect of epigallocatechin-3-gallate (EGCG) from green tea extract on the push out bond strength of an epoxy resin sealer to root dentin. Seventy single root canal premolars were decoronated and instrumented. The roots were randomly irrigated with different final irrigation protocols (n=16): 17%EDTA (EDTA), 17%EDTA followed by 2.5%NaOCl (EDTA+NaOCl), 17%EDTA followed by 1 mg/mL EGCG (EDTA+EGCG) and 1 mg/mL EGCG (EGCG). Other six root canals were received only 2.5%NaOCl as a control group. One root from each group (n=1) was excluded and prepared for SEM investigation. All root canals were then obturated and horizontally sectioned to perform the push out test. EDTA+EGCG group had the highest bond strength (p<0.05). EGCG group showed higher bond strength than EDTA group (p<0.05). The use of EGCG as a final irrigant significantly increased the push out bond strength of an epoxy resin sealer to root dentin.

show abstract

Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Epigallocatechin-3-gallate increased the push out bond strength of an epoxy resin sealer to root dentin

Pheenithicharoenkul

Panichuttra

2016

Dent. Mater. J.

View full text Add to dashboard Cite

show abstract

“…SAF operates with an 0.4 mm amplitude, therefore it was not used at the WL but 0.5 mm from the WL to prevent that instrument operated outside root canal. Previous studies evaluated the use of different irrigants to prevent CSL formation in the association between NaOCl and CHX (13,14,23). According to Krishnamurthy and Sudhakaran (13), when absolute alcohol, saline solution, and distilled water were used as intermediate flushes between the NaOCl and CHX, only the use of absolute alcohol prevented precipitate formation.…”

Section: Strategies To Prevent Chemical Sl Formationmentioning

confidence: 99%

Effect of Intermediate Flush Using Different Devices to Prevent Chemical Smear Layer Formation

et al. 2017

View full text Add to dashboard Cite

This study compared the effect of intermediate flush with distilled water delivered by conventional irrigation, EndoVac microcannula or Self-Adjusting File (SAF) system in the prevention of chemical smear layer (CSL) formation. Thirty human premolars were used. Canals were prepared with Reciproc system and 5.25% NaOCl. After chemomechanical preparation, samples were divided in 3 groups (n=10) according to the intermediate irrigation protocol with distilled water using: conventional irrigation, EndoVac microcannula or SAF. A final flush with 2% chlorhexidine solution was used and scanning electron microscopy was performed to assess protocol effectiveness. Two calibrated evaluators attributed scores according the presence or absence of CSL on the surface of the root canal walls at the coronal, middle and apical thirds, as follows: (1) no CSL; (2) small amounts of CSL; (3) moderate CSL; and (4) heavy CSL. Differences between protocols were analyzed with Kruskal-Wallis and Mann-Whitney U tests. Friedman and Wilcoxon signed rank tests were used for comparison between each root canal third. SAF resulted in less formation of CSL when compared with the conventional irrigation and EndoVac microcannula (p<0.05). When root canal thirds were analyzed, conventional irrigation and EndoVac groups showed less CSL formation at coronal and middle thirds in comparison to the apical third (p<0.05). In SAF group, there was no difference among the thirds (p>0.05). It may be concluded that an intermediate flush of distilled water, delivered by the SAF system resulted in a better reduction of CSL formation during chemomechanical preparation.

show abstract

“…O primeiro foi escolhido por ser o cimento "padrão ouro" entre os cimentos à base de óxido de zinco e eugenol devido às suas propriedades físico-químicas 19,20 . O segundo foi escolhido por ser um cimento resinoso, à base de metacrilato, e pelo fato de o oxigênio livre liberado pelo hipoclorito afetar negativamente a adesão deste material 4 .…”

Section: Discussionunclassified

“…O NaOCl danifica a estrutura colágena da dentina e reduz a microdureza dentinária 2,3 . Além disso, é um forte agente oxidante, com ação proteolítica, e afeta negativamente o processo de adesão dos materiais obturadores à dentina 4 .…”

unclassified

Efeito do plasma de oxigênio na dentina previamente exposta ao NaOCl

Prado

Roizenblit

Pacheco

et al. 2016

Rev. odontol. UNESP

View full text Add to dashboard Cite

ResumoIntrodução: O tratamento de plasma é uma tecnologia eficaz que pode manter as propriedades internas dos materiais inalteradas após o tratamento, modificando apenas a superfície. Objetivo: Avaliar o efeito do plasma de oxigênio na dentina previamente exposta ao NaOCl 6%. Material e método: Foram utilizados 60 incisivos bovinos. A coroa foi removida, a raiz foi dividida e as faces planificadas, totalizando 120 segmentos referentes ao terço cervical. As amostras foram divididas em dois grupos: controle (imersa em NaOCl 6%, lavada com água destilada, seca, imersa em EDTA 17%, lavada e seca) e plasma de oxigênio (após tratamento descrito no grupo controle, plasma de oxigênio foi aplicado por 30 s). As amostras foram avaliadas qualitativamente em relação à topografia por microscopia eletrônica de varredura, utilizando-se microfotografias com ampliação de 1.000×. O goniômetro Ramé-hart foi utilizado para a mensuração do ângulo de contato entre as superfícies e as seguintes soluções foram utilizadas: água, etilenoglicol e di-iodometano. Em seguida, a energia de superfície, representada pelas componentes polar e dispersiva, foi calculada. Avaliou-se também o escoamento dos cimentos Pulp Canal Sealer EWT (PCS) e Real Sal SE (RS) na superfície dentinária. Os dados foram analisados estatisticamente utilizando os testes Kruskal-Wallis e Mann-Whitney U (p<0,05). Resultado: O tratamento com plasma levou à formação de uma camada semelhante à smear layer na superfície dentinária. Este tratamento levou a um aumento da energia de superfície e da componente polar, favorecendo a hidrofilicidade da superfície. Entretanto, desfavoreceu o escoamento do cimento PCS e não influenciou no escoamento do cimento RS. Conclusão: O plasma de oxigênio ocasionou mudanças topográficas na superfície dentinária, favorecendo a hidrofilicidade desta. Contudo, não favoreceu o escoamento dos cimentos endodônticos na dentina.Descritores: Gases em plasma; hipoclorito de sódio; topografia; propriedades de superfície; molhabilidade. AbstractIntroduction: Plasma treatment is an effective technology since the internal properties of the material is kept unchanged after treatment, modifying only the surface. Objective: To evaluate the effect of oxygen plasma on dentin previously exposed to 6% NaOCl. Material and method: 60 bovine incisors were used. The crown was removed, the root splited and the faces planned amounting 120 segments related to the cervical third. The samples were divided into 2 groups, control (immersed in 6% NaOCl, washed with distilled water, dried, immersed in 17% EDTA, washed and dried) and oxygen plasma (after treatment described in the control group, oxygen plasma was applied for 30s). The samples were evaluated qualitatively in relation to topography by scanning electron microscopy using photomicrographs at 1000× of magnification. The Ramé-hart goniometer was used to measure the contact angle between the surfaces and the following solutions: water, ethyleneglycol, and diiodomethane. Then, surface energy, polar and dispersive compon...

show abstract

Effect of Different Irrigation Protocols on Resin Sealer Bond Strength to Dentin

Cited by 86 publications

References 27 publications

Epigallocatechin-3-gallate increased the push out bond strength of an epoxy resin sealer to root dentin

Epigallocatechin-3-gallate increased the push out bond strength of an epoxy resin sealer to root dentin

Effect of Intermediate Flush Using Different Devices to Prevent Chemical Smear Layer Formation

Efeito do plasma de oxigênio na dentina previamente exposta ao NaOCl

Contact Info

Product

Resources

About