Elmsmari, Firas; María Delgado, Luis; Duran-Sindreu, Fernando; Pérez, Román A; Luisa García, Maria; Teulé Trull, Míriam; Afrashtehfar, Kelvin I; Antonio González, José; Sánchez-López, Elena (2023). Novel strategies enhancing endodontic disinfection: antibacterial biodegradable calcium hydroxide nanoparticles in an ex vivo model. International journal of pharmaceutics, 648, p. 123627. Elsevier 10.1016/j.ijpharm.2023.123627
|
Text
1-s2.0-S0378517323010499-main.pdf - Accepted Version Available under License Creative Commons: Attribution-Noncommercial-No Derivative Works (CC-BY-NC-ND). Download (4MB) | Preview |
Due to the high failure rates associated to endodontic disinfection, this study aimed to investigate the antibacterial properties of poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) loaded with Ca(OH)2 for endodontic disinfection procedures. Ca(OH)2 NPs production and physicochemical characterization were carried out as well as multiple antibacterial tests using three bacterial strains and an ex vivo model of endodontic infection with extracted human teeth. Agar diffusion test and broth dilution determined the inhibition growth zones (n=5) and the minimal inhibitory concentration (MIC, n=5), respectively. Cell viability was assessed using Live/Dead staining with confocal microscopy (n=5). Data was analysed using ANOVA followed by post-hoc analysis. After 24 hours of incubation, Ca(OH)₂ NPs demonstrated a MIC of 10 µg/mL for Porphyromonas gingivalis (p<0.001) and Enterococcus faecalis and 5 µg/mL for Fusobacterium nucleatum (p<0.001). Although the agar diffusion test did not exhibit any inhibition for Ca(OH)2 nor for Ca(OH)₂ NPs area probably due to the buffering effect of the agar medium. However, the antibacterial capacity was confirmed in an ex vivo model, where instrumentalized teeth were infected with Enterococcus Faecalis and treated after 28 days of culture. A significant reduction in bacterial metabolic activity was confirmed for Ca(OH)2 NPs (40% reduction with a single dose) and confirmed by Live/Dead staining. In conclusion, Ca(OH)₂-loaded PLGA NPs present promising antibacterial efficacy for endodontic disinfection procedures.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology |
UniBE Contributor: |
Afrashtehfar, Kelvin Ian |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1873-3476 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
22 Nov 2023 10:53 |
Last Modified: |
05 Dec 2023 00:16 |
Publisher DOI: |
10.1016/j.ijpharm.2023.123627 |
PubMed ID: |
37984620 |
Uncontrolled Keywords: |
anti-bacterial agents calcium hydroxide disinfection endodontics enterococcus faecalis in vitro antibacterial model nanoparticles |
BORIS DOI: |
10.48350/189246 |
URI: |
https://boris.unibe.ch/id/eprint/189246 |
Actions (login required)
 |
Edit item |