Comparative Evaluation of Calcium Hypochlorite and Sodium Hypochlorite Associated with Passive Ultrasonic Irrigation on Antimicrobial Activity of a Root Canal System Infected with Enterococcus faecalis: An In Vitro Study

2014 ◽  
Vol 40 (12) ◽  
pp. 1953-1957 ◽  
Author(s):  
Ana Paula de Almeida ◽  
Matheus Albino Souza ◽  
Daniela Cristina Miyagaki ◽  
Yuri Dal Bello ◽  
Doglas Cecchin ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Sodium Hypochlorite ◽  
Comparative Evaluation ◽  
In Vitro Study ◽  
Canal System ◽  
Calcium Hypochlorite ◽  
Passive Ultrasonic Irrigation ◽  
Ultrasonic Irrigation ◽  
Root Canal System

scholarly journals Effectiveness of calcium and sodium hypochlorite associated with passive ultrasonic irrigation on pulp tissue dissolution – An in vitro study

2016 ◽  
Vol 31 (3) ◽  
pp. 109
Author(s):  
Matheus Albino Souza ◽  
Ana Paula Almeida ◽  
Vitória Menin ◽  
Daniel Lima Dalla Lana ◽  
Ana Paula Farina ◽  
...  
Keyword(s):  
Sodium Hypochlorite ◽  
In Vitro Study ◽  
Pulp Tissue ◽  
Calcium Hypochlorite ◽  
Passive Ultrasonic Irrigation ◽  
Significant Difference ◽  
Before And After ◽  
Ultrasonic Irrigation ◽  
Group 5

Objectives: To compare, in vitro, the effectiveness of calcium hypochlorite and sodium hypochlorite associated with passive ultrasonic irrigation (PUI) on pulpal tissue dissolution.Methods: The pulp tissue of forty-five bovine incisors was removed and each complete pulp was divided into two pieces of similar volume, resulting in 90 pieces distributed into nine groups (n=10), according to dissolution procedure: G1: distilled water; G2: 2.5% NaOCl; G3: 5.25% NaOCl; G4: 2.5% Ca(OCl)2; G5: 5.25% Ca(OCl)2; G6: 2.5% NaOCl+PUI; G7: 5.25% NaOCl+PUI; G8: 2.5%Ca(OCl)2+PUI and G9: 5.25% Ca(OCl)2+PUI. Each sample was weighed on a high precision balance before and after the dissolution procedure. The differences in weights were calculated and the mean percentage loss was determined. The data were statistically analyzed using two-way ANOVA and Games-Howel tests at 5% significance level.Results: Group 5 (5.25% Ca(OCl)2), 6 (2.5% NaOCl+PUI), 7 (5.25% NaOCl+PUI), 8 (2.5% Ca(OCl)2+PUI) and 9 (5.25% Ca(OCl)2+PUI) showed the highest mean percentages of weight reduction when compared to other groups (p<0.001). However, there was no statistically significant difference between them (p<0.001).Conclusions: Ca(OCl)2 and PUI contributes significantly to dissolution of pulp tissue.

scholarly journals Assessment of Antimicrobial Activity of Endodontic Sealers on Enterococcus faecalis: An in vitro Study

2012 ◽  
Vol 3 (1) ◽  
pp. 26-31 ◽  
Author(s):  
Anjali Kaiwar ◽  
Gururaj Nadig ◽  
Jayashree Hegde ◽  
S Lekha
Keyword(s):  
Antimicrobial Activity ◽  
Enterococcus Faecalis ◽  
Root Canal ◽  
In Vitro Study ◽  
Filling Material ◽  
Canal System ◽  
Filling Materials ◽  
Root Canal System ◽  
Endodontic Sealers

ABSTRACT Microorganisms invading the root canal system of a tooth may interact with the host tissue and cause pulpo-periapical pathosis. The goals of root canal treatment are to disinfect the root canal system and to prevent subsequent reinfection. The disinfection is attempted with endodontic instruments, irrigants, and medications. Due to the complex canal anatomy, microorganisms can persist even after thorough disinfection regimens are used. After disinfection, the canal is sealed with a root filling material along with sealers. To curtail residual microorganisms, root-filling materials should ideally be bactericidal, as well as biocompatible. In addition, the root filling materials are expected to act as a physical barrier to prevent the leakage of substrate to any residual microorganisms and the ingress of additional microorganisms. The aim of the present study was to assess the antimicrobial activity of various Endodontic sealers on the Enterococcus faecalis. Enterococcus faecalis is a microorganism commonly detected in asymptomatic, persistent endodontic infections. In the changing face of dental care, continued research on E. faecalis and its elimination from the dental apparatus may well define the future of the endodontic specialty. How to cite this article Kaiwar A, Nadig G, Hegde J, Lekha S. Assessment of Antimicrobial Activity of Endodontic Sealers on Enterococcus faecalis: An in vitro Study. World J Dent 2012;3(1):26-31.

scholarly journals Comparative Evaluation of Tensile Strength in Die Stone Incorporated with Sodium and Calcium Hypochlorite as Disinfectants: An in vitro Study

2017 ◽  
Vol 18 (12) ◽  
pp. 1185-1189
Author(s):  
MR Pradeep ◽  
NR Pramodh ◽  
Ravi Naik ◽  
CS Mahesh ◽  
Manju R Kumari
Keyword(s):  
Tensile Strength ◽  
Sodium Hypochlorite ◽  
Comparative Evaluation ◽  
Testing Machine ◽  
In Vitro Study ◽  
Control Group ◽  
Calcium Hypochlorite ◽  
Type Iv ◽  
Die Material

ABSTRACT Aim The aim of this study was to evaluate the tensile strength of die stone incorporated with sodium and calcium hypochlorite as disinfectants. Materials and methods Two commercially available type IV die stone (Kalrock: Kalabhai Karson Pvt., Ltd and Pearlstone: Asian Chemicals) and two commercially available disinfectant solutions (sodium hypochlorite and calcium hypochlorite: Beachem Laboratory Chemical Private Limited, Chennai and Leo Chem Private Limited, Bengaluru) were used in this study, and the tensile strength was measured using Lloyd's Universal Testing Machine. Results The results show that incorporating the disinfecting solutions decreases the tensile strength of both products. The effect of decreasing tensile strength on type IV gypsum product is seen more in calcium hypochlorite when compared with sodium hypochlorite disinfecting solution, and the tensile strength of Kalrock specimens is higher than Pearlstone specimens after disinfecting with sodium hypochlorite and calcium hypochlorite solution. The statistical results also show significant results in all the groups when compared with the control group. Conclusion The incorporation of sodium and calcium hypochlorite disinfecting solutions is not an encouraging method for both die materials as it reduces the tensile strength of type IV gypsum product. Tensile strength of Kalstone® die material is superior than Pearlstone® die material after mixing with sodium hypochlorite and calcium hypochlorite. Clinical significance According to the recommendations of Americans with Disability Act (ADA) and the Centers for Disease Control and Prevention, disinfecting the whole cast without or minimal changes in physical and mechanical properties was the motto of the study. The tensile strength in type IV gypsum product plays a most important role in retrieval of cast from impression, especially in narrow tooth preparation. This study reveals that incorporating method of disinfecting solutions is not recommended as it reduces the tensile strength. How to cite this article Pramodh NR, Kumar CNV, Pradeep MR, Naik R, Mahesh CS, Kumari MR. Comparative Evaluation of Tensile Strength in Die Stone Incorporated with Sodium and Calcium Hypochlorite as Disinfectants: An in vitro Study. J Contemp Dent Pract 2017;18(12):1185-1189.

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