Effect of three different time periods of irrigation with EDTA-T, EDTA, and citric acid on smear layer removal

Scelza, Míriam Zaccaro; Pierro, Viviane Santos da Silva; Scelza, Pantaleo; Pereira, Mário

doi:10.1016/j.tripleo.2004.03.027

Cited by 76 publications

(77 citation statements)

References 16 publications

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“…Previous studies have shown that solutions with considerably higher concentrations than 0.2% chitosan and with longer application times than the 3 min used in this study (18,19) are necessary for removing this layer. Spanó et al (4) evaluated the cleaning capacity of 15% EDTA, 10% citric acid, 10% sodium citrate, apple vinegar, 5% acetic acid and 5% malic acid.…”

Section: Discussionmentioning

confidence: 90%

Time-dependent effects of chitosan on dentin structures

et al. 2012

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Complete debridement with smear layer removal are essential measures for achieving a successful outcome of root canal treatment. The aim of this study was to evaluate the effects of chitosan at different concentrations on the removal of the smear layer and on dentin structure after 3 and 5 min of application. Twelve recently extracted maxillary canine teeth were instrumented using the crown-down technique and irrigated with 1% sodium hypochlorite. The specimens were distributed according to the time and concentration of the final irrigating solution: G1: 0.1% chitosan for 3 min; G2: 0.2% chitosan for 3 min; G3: 0.37% chitosan for 3 min; G4: 0.1% chitosan for 5 min; G5: 0.2% chitosan for 5 min; G6: 0.37% chitosan for 5 min. All samples were prepared for SEM analysis. G1 exhibited removal of the smear layer, but not the smear plugs. G2 showed visible and open tubules with slight erosion of the peritubular dentin. Cleaning in G3 was similar to that in G2, however, the erosive effect was greater. There was expansion of the diameter of the tubules in G4; and in G5 and G6, there was severe erosion with deterioration of dentin surface. In conclusion, 0.2% chitosan for 3 min appeared to be efficient for removing the smear layer, causing little erosion of dentin.

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Section: Discussionmentioning

confidence: 90%

Time-dependent effects of chitosan on dentin structures

et al. 2012

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“…2 The removal of the smear layer, which contains attached microbiota and their toxins from canal walls, improves the seal of the obturating materials with the dentinal walls and reduces the potential for survival and reproduction of microorganisms. 3 The depth of sealer penetration into the dentinal tubules might serve as an indicator of the extent to which the smear layer was removed. 2 Chelating agents, such as ethylenediaminetetraacetic acid (EDTA), CA, MA, phosphoric acid, and combinations of EDTA and NaOCl have been used to remove the smear layer.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Final Irrigating Solutions on Depth of Sealer Penetration into Dentinal Tubules: An in vitro Confocal Laser Microscopic Study

Shetty¹

2017

Journal of Operative Dentistry &Amp; Endodontics

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Aim: To evaluate the maximum depth of sealer penetration into dentinal tubules at the coronal, middle, and apical third of root canals, following the use of different final irrigation solutions. Materials and methods:Eighty freshly extracted mandibular premolars were selected for the study. After decoronation, instrumentation of samples was done using Protaper universal rotary file system till F4. During shaping and cleaning of root canal, 5.25% concentration of sodium hypochlorite (NaOCl) was used for irrigation. The samples were then randomly divided into four groups (n = 20) depending on the final irrigating solution used. Group I: 17% aqueous ethylenediaminetetraacetic acid (MA) (aq. EDTA); group II: 10% citric acid (CA); group III: 5% maleic acid; group IV: 5.25% conc. NaOCl. Passive ultrasonic irrigation (PUI) was used to activate each final irrigating solution. The samples were obturated using warm lateral condensation technique with guttapercha coated with AH plus sealer mixed with rhodamine B dye. Confocal laser scanning microscopy (CLSM) examined the sealer penetration depth. Results:The Kruskal-Wallis analysis results showed that there was a significant difference in the maximum depth of sealer penetration among all groups in all sections (p < 0.05). The coronal sections of the root canals in each group showed a significantly higher depth of sealer penetration than did the apical and middle sections (p < 0.05). Conclusion:A combination of 17% aq. EDTA and PUI used for final irrigation proved to be more effective for sealer penetration into the dentinal tubules.Clinical significance: Final irrigation protocol followed is of paramount importance in achieving complete disinfection within the root canal, and also the penetration of sealer serves as an indicator of the extent to which the smear layer was removed.

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“…Os resultados demonstraram que PUI aumentou a capacidade de remoção de smear layer, para todas soluções avaliadas, inclusive o EDTA, quando comparado à irrigação clássica 58 . Trabalhos [59][60][61] registraram que tanto o EDTA, EDTA-T e o ácido cítrico foram eficazes quando usados em menor espaço de tempo, sem contudo, causar danos a estrutura dentinária. Resultados estes também encontrado por outro autor 24 que reforça que para a limpeza dos canais radiculares é preciso que haja um protocolo de irrigação final e que esta irrigação se dá de forma eficiente, por três minu-tos com uma lavagem alternada de EDTA e NaOCl, para a remoção da smear layer.…”

Section: Discussionunclassified

“…O PQM é considerado um requisito chave para o sucesso da terapia endodôntica, uma vez que consiste na limpeza e modelagem -clean and shape-do canal radicular e suas eventuais ramificações, através da instrumentação mecânica, complementada pelas substâncias irrigadoras e medicação intracanal; removendo a maior quantidade possível de detritos, restos pulpares, micro-organismos; criando condições ideais para que ocorra a recuperação e regeneração tecidual 3 . Pesquisas ao longo dos anos têm demonstrado que a instrumentação, seja ela rotatória ou manual, tem a capacidade de gerar um magma residual, tanto orgânico como inorgânico no interior dos canais, denominado de smear layer 4 .…”

Section: Introductionunclassified

A eficácia da solução de EDTA na remoção de smear layer e sua relação com o tempo de uso: uma revisão integrativa

Mafra¹,

Girelli²,

Xavier³

et al. 2017

Rev. da Fac. de Odontologia, UPF

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A eficácia da solução de EDTA na remoção de smear layer e sua relação com o tempo de uso: uma revisão integrativa IntroduçãoO sucesso do tratamento endodôntico está intimamente relacionado à qualidade da limpeza e desinfecção do sistema de canais radiculares (SCR), obtido por meio da eliminação ou pelo menos redução do conteúdo orgânico e inorgânico contaminado do interior dos canais 1,2 . Para atingir tais objetivos, os canais são submetidos ao preparo químico mecâ-nico (PQM).O PQM é considerado um requisito chave para o sucesso da terapia endodôntica, uma vez que consiste na limpeza e modelagem -clean and shape-do

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Effect of three different time periods of irrigation with EDTA-T, EDTA, and citric acid on smear layer removal

Cited by 76 publications

References 16 publications

Time-dependent effects of chitosan on dentin structures

Time-dependent effects of chitosan on dentin structures

Effects of Different Final Irrigating Solutions on Depth of Sealer Penetration into Dentinal Tubules: An in vitro Confocal Laser Microscopic Study

A eficácia da solução de EDTA na remoção de smear layer e sua relação com o tempo de uso: uma revisão integrativa

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