scholarly journals Effect of Sodium Hypochlorite Concentration in Continuous Chelation on Dislodgement Resistance of an Epoxy Resin and Hydraulic Calcium Silicate Sealer

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3482
Author(s):  
Nidambur Vasudev Ballal ◽  
Amal Roy ◽  
Matthias Zehnder
Keyword(s):  
Epoxy Resin ◽  
Sodium Hypochlorite ◽  
Root Canal ◽  
Physiological Saline ◽  
Dependent Manner ◽  
Canal Wall ◽  
Human Teeth ◽  
Canal Irrigation ◽  
Root Canal Irrigation ◽  
The Impact

The conditioning of the root canal wall during chemo-mechanical root canal treatment differentially affects the adhesion of root canal sealers. This investigation evaluated the impact of sodium hypochlorite (NaOCl) concentration as used in a root canal irrigation concept called continuous chelation, with 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) contained in the NaOCl solution that is applied. Fourier-transform infrared spectra of the dentinal wall were gathered. The consequential effects on push-out bond strength of an epoxy resin (AH Plus) versus a hydraulic CaSi sealer (BioRoot RCS) were assessed. Single-rooted extracted human teeth were used and irrigated with pure NaOCl at a concentration of 0% (physiological saline), 2.5%, or 5.25%. Dual Rinse HEDP (9%) was added to the solutions, or not added for further control. Pure NaOCl solutions caused a decrease in the amide III: phosphate ratios, which was counter-acted by the addition of HEDP. It was observed that the adhesion of the epoxy resin sealer under investigation was negatively affected by this NaOCl deproteinization of the canal wall in a dose-dependent manner, while the opposite was observed with the CaSi sealer. HEDP when used in conjunction with NaOCl was beneficial for the adhesion of both sealers.

scholarly journals Efficacy evaluation of a cordless ultrasonic unit in achieving reduction of bacterial load within a root canal system as compared to a conventional ultrasonic unit and negative pressure irrigation

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Randall Mikulik ◽  
Ali Naji ◽  
Ransome van der Hoeven ◽  
Igor Tsesis ◽  
Eyal Rosen ◽  
...  
Keyword(s):  
Sodium Hypochlorite ◽  
Negative Pressure ◽  
Root Canal ◽  
Bacterial Load ◽  
Sodium Thiosulfate ◽  
Efficacy Evaluation ◽  
Human Teeth ◽  
Canal Irrigation ◽  
Root Canal Irrigation ◽  
Significant Difference

Abstract Introduction Increase in efficacy during root canal irrigation may contribute to better treatment outcomes. This study investigated the efficacy of ultrasonic and negative pressure irrigation systems using sodium hypochlorite (NaOCl) in the reduction of bacterial load in human teeth. One hundred thirty-one single-rooted teeth were cleaned and shaped, autoclaved, and incubated with E. faecalis. Teeth were randomly assigned to three experimental groups (n = 40) and treated in the presence of 1% sodium hypochlorite using EndoUltra cordless ultrasonic, conventional ultrasonic, and Endovac negative pressure irrigation. Syringe irrigation controls were treated with 1% sodium hypochlorite and phosphate-buffered saline via side-vented needle irrigation. All groups with NaOCl received 5% sodium thiosulfate neutralization for 5 min after treatment. Samples of root canal fluid and dentin chips were acquired from canals before and after treatment, incubated on BHI agar, and colony forming units categorized according to quantity. Wilcoxon rank-sum and Bonferroni tests were used for statistical analysis. p values less than 0.05 were considered significant. Results Endovac group was significantly better in eliminating bacteria from the root canals than 1% NaOCl (p = 0.006) and PBS syringe irrigation (p = 0.015). However, it was not significantly different from the two ultrasonic groups (p > 0.05). Both ultrasonic groups showed better performance than 1% NaOCl and PBS syringe irrigation, however, not statistically significant (p < 0.03). There was no significant difference between the two ultrasonic devices (p > 0.05). Conclusion EndoVac may be an important tool for bacterial load reduction in oval canals.

scholarly journals A scanning electron microscopic evaluation of different root canal irrigation regimens

2006 ◽  
Vol 20 (3) ◽  
pp. 235-240 ◽  
Author(s):  
Chaves Medici Mônika ◽  
Izabel Cristina Fröner
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Ricinus Communis ◽  
Smear Layer ◽  
Electron Microscopic ◽  
Canal Irrigation ◽  
Root Canals ◽  
Root Canal Irrigation ◽  
Microscopic Evaluation ◽  
Scanning Electron

The purpose of this study was to assess the effectiveness of endodontic irrigants in removing the smear layer from instrumented root canal walls using Scanning Electron Microscopy (SEM). The endodontic irrigants used were: 1% sodium hypochlorite (NaOCl); 1% NaOCl mixed to 17% EDTAC; 2% chlorhexidine gel; and Ricinus communis gel. Photomicrographs of the middle and apical thirds were evaluated with the aid of the Fotoscore - v. 2.0 software. The results indicated that the mixture of sodium hypochlorite and EDTAC completely removed the smear layer from dentinal walls. The other endodontic irrigants were not as efficient in cleansing the root canals.

Influence of the Dentinal Wall on the pH of Sodium Hypochlorite during Root Canal Irrigation

2014 ◽  
Vol 40 (7) ◽  
pp. 1005-1008 ◽  
Author(s):  
Ricardo Gomes Macedo ◽  
Noemi Pascual Herrero ◽  
Paul Wesselink ◽  
Michel Versluis ◽  
Luc van der Sluis
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Canal Irrigation ◽  
Root Canal Irrigation

scholarly journals The Effectiveness of 2.5% NaOCl Irrigation and 17% EDTA against the Sealing Ability of Resin Paste

2020 ◽  
Vol 9 (2) ◽  
pp. 105
Author(s):  
Tamara Nitya A ◽  
Nanik Zubaidah ◽  
Moch Mudjiono
Keyword(s):  
Root Canal ◽  
Conventional Technique ◽  
Control Group ◽  
Canal Wall ◽  
Canal Irrigation ◽  
Gutta Percha ◽  
Root Canal Irrigation ◽  
Sealing Ability ◽  
The Mean ◽  
Apical Leakage

Background: Root canal irrigation seeks the elimination of bacteria and its products from the root canal. If debris is left in the root canal, it can prohibit adaptation between obturationmaterial and root canal wall. Therefore, it can decrease the sealing ability of obturation material. Purpose: To assess the effectiveness of 2.5% NaOCl and 17% EDTA on the apical sealing ability of resin obturation paste. Method: The roots of 18 human mandibular premolar teeth were selected and the root canal was prepared using a conventional technique. Samples were irrigated with 2.5% NaOCl, and17% EDTA, and sterile aquadest (Aqua Deastilata) as a control group. Samples were filled with gutta-percha and top seal. Samples were soaked in 2% methylene blue for 48 hours to measure the depth of microleakage. Result: The mean apical leakage after irrigation with 2.5% NaOCl; 17% EDTA; and sterile aquadest in the sequence were 0.92 mm; 3.6 mm; and 8.08 mm. Conclusion: 2.5% NaOClhas less depth of microleakage than 17% EDTA. However, the depth of microleakage cannot demonstrate the exact sealing ability of the resin paste due to some factors.

Effectiveness of Root Canal Debris Removal Using Passive Ultrasound Irrigation with Chlorhexidine Digluconate or Sodium Hypochlorite Individually or in Combination as Irrigants

2008 ◽  
Vol 9 (5) ◽  
pp. 68-75 ◽  
Author(s):  
Rafael Brandao Ferreira ◽  
Melissa Andreia Marchesan ◽  
Yara Teresinha Silva-Sousa ◽  
Manoel Sousa-Neto
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Distilled Water ◽  
Chlorhexidine Digluconate ◽  
Canal Irrigation ◽  
Root Canals ◽  
Root Canal Irrigation ◽  
Debris Removal ◽  
Group 2

Abstract Aim The aim of this in vitro study was to evaluate the cleaning capacity of different auxiliary chemical substances energized with ultrasound in radicular dentin using morphologic analysis. Methods and Materials Twenty-eight single-canal, mandibular incisors were prepared with the Hero 642 canal preparation system following the sequence: 25/12, 30/06, 35/02, and 40/02, 1 mm from the apex. The specimens were then divided into four groups of seven teeth. During biomechanical preparation the teeth were irrigated with 2 ml of distilled water between files. Each group of specimens (n=7) received a final irrigation with 100 ml of the following irrigants that were activated with ultrasound for 3 minutes: Group 1- distilled water; Group 2- 0.2% chlorhexidine digluconate (CHX); Group 3- 2.5% sodium hypochlorite (NaOCl); and Group 4-the filtrate obtained after combining 0.2% CHX and 2.5% NaOCl. The apical portions of the root canals from each group were then submitted to histological processing and analyzed using optical microscopy. Results Results showed statistical differences between the groups (p<0.01). Groups 1 and 2 (distilled water and 0.2% CHX respectively) were statistically similar in terms of a greater amount of debris, whereas 2.5% NaOCl and the filtrate were more efficient in removal of debris. Conclusion There is no additional benefit in terms of debris removal from root canal walls by irrigating with the filtrate obtained from the combination of NaOCl and CHX when compared to using NaOCl alone. Clinical Significance The findings of this study suggest the time and expense of preparing and using a combination of NaOCl and CHX is not warranted compared to using NaOCl alone for root canal irrigation. Citation Ferreira RB, Marchesan MA, Silva-Sousa YT, Sousa-Neto M. Effectiveness of Root Canal Debris Removal Using Passive Ultrasound Irrigation with Chlorhexidine Digluconate or Sodium Hypochlorite Individually or in Combination as Irrigants. J Contemp Dent Pract 2008 July; (9)5:068-075.

The effect of root-canal irrigation with sodium hypochlorite and EDTA on tooth surface strain

2002 ◽  
Vol 35 (5) ◽  
pp. 492-494
Author(s):  
R. Rajasingham ◽  
J. C. Knowles ◽  
Y.-L. Ng ◽  
S. Rahbaran ◽  
K. Gulabivala
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Surface Strain ◽  
Tooth Surface ◽  
Canal Irrigation ◽  
Root Canal Irrigation

scholarly journals Conduta frente à lesão por hipoclorito de sódio em terapia endodôntica: um relato de prontuário

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Odacir Borrin ◽  
Renata Licks ◽  
Juliana Andréa Corrêa Travessas ◽  
Rúbia da Rocha Vieira ◽  
Juliane Pereira Butze
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Oral Surgery ◽  
Case Reports ◽  
Sao Paulo ◽  
Sodium Hypochlorite Solution ◽  
São Paulo ◽  
Fernando Pessoa ◽  
Canal Irrigation ◽  
Root Canal Irrigation

Objetivos: O presente estudo teve como objetivo relatar a análise de um prontuário de paciente submetido ao tratamento de uma queimadura por hipoclorito de sódio em mucosa oral devido à extravasamento de hipoclorito de sódio durante o tratamento endodôntico. Materiais e Métodos: Através da análise de prontuários de pacientes atendidos na disciplina de Estágio Supervisionado do Complexo Odontológico da FSG Centro Universitário entre os anos de 2017 e 2018, selecionou-se um prontuário de um paciente que sofreu queimadura acidental devido ao extravasamento de hipoclorito de sódio. Resultados: O extravasamento de hipoclorito resultou numa lesão por queimadura na lingual do elemento 45. Como medidas, o paciente foi orientado a usar medicação sistêmica, medicamento Ad-Muc® associado a bochechos com clorexidina a 0,12% e sessões de laserterapia de baixa intensidade. Conclusão: O presente relato destaca os problemas associados ao extravasamento acidental de solução irrigadora à base de hipoclorito de sódio. O adequado diagnóstico, juntamente com a conduta adotada, associando medicação sistêmica, tópica e realização de laserterapia, neste caso, se mostrou efetiva.Descritores: Endodontia; Hipoclorito de Sódio; Acidentes.ReferênciasNoites R, Carvalho MF, Vaz IP. Complicações que podem surgir durante o uso do hipoclorito de sódio no tratamento endodôntico. Rev Port Estomatol Cir Maxilofac. 2009; 50(1):53-56.Salum G, Barros Filho S, Rangel LFGO, Rosa RH, dos Santos SSF, Leão MVP. Hipersensibilidade ao hipoclorito de sódio em intervenções endodônticas. Rev Odontol Univ São Paulo. 2012;24(3):200-8.Borin G, Becker AN, Oliveira EPM. A história do hipoclorito de sódio e a sua importância como substância auxiliar no preparo químico mecânico de canais radiculares. Rev Endod Pesq  Ensino On Line. 2007;3(5):1-5.Witton R, Brennan PA. Severe tissue damage and neurologic defict following extravasation of sodium hypochlorite solution during routine endodontic treatment. Br Dent J. 2005; 198(12):749-50.Bramante CM, Duque JA, Cavenago BC, Vivan RR, Bramante AS, Andrade FB, Duarte MAH. Use of a 660-nm laser to aid in the healing of necrotic alveolar mucosa caused by extruded sodium hypochlorite: a case report. J Endod. 2015;41(11):1899-902.Tenore G, Palaia G, Ciolfi C, Mohsen M, Battisti A, Romeu U. Subcutaneous emphysema during root canal therapy: endodontic accident by sodium hypoclorite. Ann Stomatol (Roma). 2017; 8(3):117-122.Hulsmann M, Hahn W. Complications during root canal irrigation – literature review and case reports. Int Endod J. 2000;33(3):186-93.Silva JPM, Boijink D. Acidente com hipoclorito de sódio durante tratamento endodôntico: Análise de prontuário. Rev Odontol Araçatuba. 2019;40(1):25-8.Ribeiro MS, Silva DFT, Zezell DM, Nunez SC. Laser de baixa intensidade. A Odontologia e o laser. São Paulo: Quintessense; 2004.Azzi VJB, Di Pietro SN. Aplicação da laserterapia no tratamento de queimaduras: uma revisão sistemática. Rev Bras Terap e Saúde. 2012;3(1):15-26.Graça BP. O Hipoclorito de sódio em Endodontia [dissertação]. Porto: Faculdade de Ciências da Saúde/Universidade Fernando Pessoa; 2014.Gursoy UK, Bostanci V, Kosger HH. Palatal mucosa necrosis because of accidental sodium hypochlorite injection instead of anaesthetic solution. Int Endod J. 2006;39(2):157-61.Freitas RPA, Barcelos APM, Nóbrega BM, Macedo AB, Oliveira AR, Ramos AMO et al. Laserterapia e microcorrente na cicatrização de queimadura em ratos: terapias associadas ou isoladas?. Fisioter Pesqui. 2013;20(1):24-30.Prockt AP, Takahashi A, Pagnoncelli RM. Uso de terapia com laser de baixa intensidade na cirurgia bucomaxilofacial. Rev Port Estomatol Cir Maxilofac. 2008;49(4):247-55.Noba C, Mello-Moura ACV, Gimenez T, Tedesco TK, Moura-Netto C. Laser for bone healing after oral surgery: systematic review. Lasers med Sci. 2018;33(3):667-74.Rocha Júnior AM, Oliveira RG, Farias RE, Andrade LCF, Aarestrup FM. Modulação da proliferação fibroblástica e da resposta inflamatória pela terapia a laser de baixa intensidade no processo de reparo tecidual. An Bras Dermatol. 2006;81(2):150-56.Soares RG, Dagnese C, Irala LED, Salles AA, Limongi O. Injeção acidental de hipoclorito de sódio na região periapical durante tratamento endodôntico: relato de caso. RSBO. 2006; 4(1):17-21.Doherty MAH, Thomas MBM, Dummer PMH. Sodium hypochlorite accident – a complication of poor access cavity design. Dent Update. 2009;36(1):7-12.

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