Evaluation of the Genotoxicity of Zinc Oxide Eugenol-Based, Calcium Hydroxide-Based, and Epoxy Resin-Based Root Canal Sealers by Comet Assay

2001 ◽  
Vol 27 (12) ◽  
pp. 744-748 ◽  
Author(s):  
T HUANG ◽  
D HUEILEE ◽  
C KAO
Keyword(s):  
Zinc Oxide ◽  
Comet Assay ◽  
Epoxy Resin ◽  
Calcium Hydroxide ◽  
Root Canal ◽  
Zinc Oxide Eugenol ◽  
Root Canal Sealers

scholarly journals Antimicrobial activity of root canal sealers

2006 ◽  
Vol 53 (2) ◽  
pp. 104-112 ◽  
Author(s):  
Mirjana Vujaskovic ◽  
Branka Radosavljevic
Keyword(s):  
Antimicrobial Activity ◽  
Zinc Oxide ◽  
Epoxy Resin ◽  
Calcium Hydroxide ◽  
Root Canal ◽  
Antimicrobial Effect ◽  
Inhibition Zone ◽  
Glass Ionomer ◽  
Zinc Oxide Eugenol ◽  
Root Canal Sealers

All root canal sealers should have antimicrobial activity so that they could act against any remaining bacteria after root canal obturation. The aim of this study was to evaluate the antimicrobial activity of five root canal sealers: AH26, a resin based paste; Apexit, calcium hydroxide based paste; Endomethasone and Tubliseal, zinc oxide eugenol based materials and Ketac Endo Aplicap, glass ionomer based sealer. Matherials And Methods: Antimicrobial activity was tested against S. mutans 70C and L.casei ATCC 27773 using ADT (agar diffusion inhibitory test) on TYC SB, blood and MRS agars. Freshly prepared paste or cement was placed in grooves of 4 mm in diameter in agar plates. Prepared agar plates were incubated at 37?C in GAS PAC system for 24hours. The antimicrobial effect was determined according to the diameter of growth inhibition zone around tested materials. Three measurements were done for each material and values were recorded in millimeters. Statistical analysis was done using Mann Whitney test. The results confirmed that epoxy resin and zinc oxide eugenol based sealers had the greatest antimicrobial effect. Calcium hydroxide and glass ionomer based sealers showed significantly lower antimicrobial activity compared to AH26, Endomethasone and Tubliseal. Conclusion: The greatest antimicrobial activity was found for epoxy resin based sealer (AH26) for both tested microorganisms.

scholarly journals A Cross-Sectional Study on the Preference of Root Canal Sealers Among Pediatric Dentists For Obturating Permanent Teeth

2020 ◽  
Vol 11 (SPL4) ◽  
pp. 226-232
Author(s):  
Lakshmi Lakshmanan ◽  
Subramanian EMG ◽  
Ganesh Jeevanandan ◽  
Mebin George Mathew
Keyword(s):  
Zinc Oxide ◽  
Calcium Hydroxide ◽  
Root Canal ◽  
Cross Sectional Study ◽  
Permanent Teeth ◽  
Cross Sectional ◽  
Zinc Oxide Eugenol ◽  
Significant Difference ◽  
Pediatric Dentists ◽  
Root Canal Sealers

Utilisation of root canal sealers to perform obturation procedures is an endorsed method in endodontics and has an indispensable role in the success of treatment. The objective of this study was to explore the pediatric dentists’ preference for root canal sealers for obturating permanent teeth. 360 permanent teeth with gutta-percha obturation done by pediatric dentists were analyzed for the study. The variety of root canal sealers that are utilised for obturating the permanent teeth by pediatric dentists were assessed. The data were obtained from a patient management software. Chi-square test was performed. Out of the 360 permanent teeth, 186 teeth were obturated using resin-based sealers, 101 teeth using zinc oxide eugenol-based sealers and 73 teeth were obturated using calcium hydroxide-based sealers, with statistically significant difference between the three materials (P<0.05). Based on the findings of the present study, resin sealers followed by zinc oxide eugenol sealers and calcium hydroxide sealers were more preferred by pediatric dentists for root canal therapy in permanent teeth. 

scholarly journals Sealability of Different Root Canal Nanosealers: Nano Calcium Hydroxide and Nano Bioactive Glass

2019 ◽  
Vol 13 (1) ◽  
pp. 308-315
Author(s):  
Asmaa A. Desouky ◽  
Maged M. Negm ◽  
Magdy M. Ali
Keyword(s):  
Zinc Oxide ◽  
Bioactive Glass ◽  
Calcium Hydroxide ◽  
Root Canal ◽  
Blue Dye ◽  
Nano Powder ◽  
Zinc Oxide Eugenol ◽  
Nail Polish ◽  
Stereo Microscope

Background: The success of the endodontic treatment is largely dependent on the sealing achieved by root canal obturation. The application of sealer fills imperfections and increases adaptation of the root filling to the canal walls. Aim: To evaluate the sealability of experimental nanosealers (nano calcium hydroxide and nano bioactive glass) and to compare it with the commercial zinc oxide eugenol sealer using a dye penetration method. Materials and Methods: Sixty single-rooted mandibular premolars were selected. The tooth crowns were removed so as to obtain standardized 15-mm-long root specimens. The root canal was instrumented with Protaper Ni-Ti rotary file and the final file size was up to # F4/.06 (in vitro study). They were then randomly allocated into 3 groups of 20 specimens each (n=20) according to the sealer used for obturation, and all samples were filled with single cone gutta-percha (#40/06) and one of the tested sealers. All teeth were coated with nail polish and then suspended in 2% methylene blue dye for 7 days. Stereo-microscope (x10) was used to evaluate the sealability of newly introduced nanosealers. The data were statistically analyzed by ANOVA test followed by post hoc analysis (P < 0.05). Results: Significant improvement shown by the presented study suggests that nano calcium hydroxide sealer showed significantly less dye leakage than nano bioactive glass sealer and zinc oxide eugenol sealer. Conclusion: The results of this study showed that the synthesized nano-powder sealers are suitable for use in root canal therapy to prevent leakage. The root canal can be sealed better by using smaller nano-powder particle sizes. In addition, the two groups exhibited significant differences in leakage in comparison with commonly used ZOE sealer.

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