Noneugenol sealers – Thyme oil as an alternative in zinc oxide-based endodontic sealers

Aim: Thyme has got good anti-inflammatory, antimicrobial, and antifungal properties and is reported to be very effective against oral microflora. The aim of the present study was to compare the antimicrobial activity of zinc oxide and thyme oil to zinc oxide and eugenol. Methods: Anti-bacterial ef...

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Main Authors: Andrew Gnanamuttu, Aruna Kumari Veronica, Krishnan Mahalakshmi, Shamini Sai, Anand V Susila
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2023-01-01
Series:Endodontology
Subjects:
Online Access:http://www.endodontologyonweb.org/article.asp?issn=0970-7212;year=2023;volume=35;issue=2;spage=161;epage=166;aulast=Gnanamuttu
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author Andrew Gnanamuttu
Aruna Kumari Veronica
Krishnan Mahalakshmi
Shamini Sai
Anand V Susila
author_facet Andrew Gnanamuttu
Aruna Kumari Veronica
Krishnan Mahalakshmi
Shamini Sai
Anand V Susila
author_sort Andrew Gnanamuttu
collection DOAJ
description Aim: Thyme has got good anti-inflammatory, antimicrobial, and antifungal properties and is reported to be very effective against oral microflora. The aim of the present study was to compare the antimicrobial activity of zinc oxide and thyme oil to zinc oxide and eugenol. Methods: Anti-bacterial efficacy of zinc oxide + eugenol and zinc oxide + thyme oil paste was evaluated against mature Enterococcus faecalis (E. faecalis) dentinal biofilm evaluated by the zone of inhibition (ZOI), biofilm disruption evaluated by colony-forming unit (CFU) reduction, and confocal laser scanning microscopy (CLSM). The red and green fluorescence thresholds were manually set according to their respective intensity and kept consistent for each sample. The ratios of live/dead cells were automatically calculated by the software. Results: The results of the present study showed that there was a statistically significant difference in antimicrobial efficacy for thyme oil compared to eugenol as evaluated by ZOI (P = 0.032). Thyme oil was significantly better than eugenol in antimicrobial efficacy according to the percentage of CFU reduction (P = 0.0422) in E. faecalis biofilm. Based on CLSM evaluation, there was no statistically significant difference (P = 0.172) between the two groups. Conclusion: Zinc oxide + Thyme oil paste, used in this study has shown promising antibacterial activity against E. faecalis and hence can be used as an alternative sealer.
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spelling doaj.art-592c5c9a1f2f4d549fcc2f6b0c6c663a2023-07-21T14:38:20ZengWolters Kluwer Medknow PublicationsEndodontology0970-72122023-01-0135216116610.4103/endo.endo_220_22Noneugenol sealers – Thyme oil as an alternative in zinc oxide-based endodontic sealersAndrew GnanamuttuAruna Kumari VeronicaKrishnan MahalakshmiShamini SaiAnand V SusilaAim: Thyme has got good anti-inflammatory, antimicrobial, and antifungal properties and is reported to be very effective against oral microflora. The aim of the present study was to compare the antimicrobial activity of zinc oxide and thyme oil to zinc oxide and eugenol. Methods: Anti-bacterial efficacy of zinc oxide + eugenol and zinc oxide + thyme oil paste was evaluated against mature Enterococcus faecalis (E. faecalis) dentinal biofilm evaluated by the zone of inhibition (ZOI), biofilm disruption evaluated by colony-forming unit (CFU) reduction, and confocal laser scanning microscopy (CLSM). The red and green fluorescence thresholds were manually set according to their respective intensity and kept consistent for each sample. The ratios of live/dead cells were automatically calculated by the software. Results: The results of the present study showed that there was a statistically significant difference in antimicrobial efficacy for thyme oil compared to eugenol as evaluated by ZOI (P = 0.032). Thyme oil was significantly better than eugenol in antimicrobial efficacy according to the percentage of CFU reduction (P = 0.0422) in E. faecalis biofilm. Based on CLSM evaluation, there was no statistically significant difference (P = 0.172) between the two groups. Conclusion: Zinc oxide + Thyme oil paste, used in this study has shown promising antibacterial activity against E. faecalis and hence can be used as an alternative sealer.http://www.endodontologyonweb.org/article.asp?issn=0970-7212;year=2023;volume=35;issue=2;spage=161;epage=166;aulast=Gnanamuttuantibacterial efficacycolony-forming unitconfocal laser microscopyenterococcus faecaliszone of inhibition
spellingShingle Andrew Gnanamuttu
Aruna Kumari Veronica
Krishnan Mahalakshmi
Shamini Sai
Anand V Susila
Noneugenol sealers – Thyme oil as an alternative in zinc oxide-based endodontic sealers
Endodontology
antibacterial efficacy
colony-forming unit
confocal laser microscopy
enterococcus faecalis
zone of inhibition
title Noneugenol sealers – Thyme oil as an alternative in zinc oxide-based endodontic sealers
title_full Noneugenol sealers – Thyme oil as an alternative in zinc oxide-based endodontic sealers
title_fullStr Noneugenol sealers – Thyme oil as an alternative in zinc oxide-based endodontic sealers
title_full_unstemmed Noneugenol sealers – Thyme oil as an alternative in zinc oxide-based endodontic sealers
title_short Noneugenol sealers – Thyme oil as an alternative in zinc oxide-based endodontic sealers
title_sort noneugenol sealers thyme oil as an alternative in zinc oxide based endodontic sealers
topic antibacterial efficacy
colony-forming unit
confocal laser microscopy
enterococcus faecalis
zone of inhibition
url http://www.endodontologyonweb.org/article.asp?issn=0970-7212;year=2023;volume=35;issue=2;spage=161;epage=166;aulast=Gnanamuttu
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