We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Photodynamic and nitric oxide therapy-based synergistic antimicrobial nanoplatform: an advanced root canal irrigation system for endodontic bacterial infections.
- Authors
Zeng, Youyun; Hu, Xiangyu; Cai, Zhibin; Qiu, Dongchao; Ran, Ying; Ding, Yiqin; Shi, Jiayi; Cai, Xiaojun; Pan, Yihuai
- Abstract
Background: The main issues faced during the treatment of apical periodontitis are the management of bacterial infection and the facilitation of the repair of alveolar bone defects to shorten disease duration. Conventional root canal irrigants are limited in their efficacy and are associated with several side effects. This study introduces a synergistic therapy based on nitric oxide (NO) and antimicrobial photodynamic therapy (aPDT) for the treatment of apical periodontitis. Results: This research developed a multifunctional nanoparticle, CGP, utilizing guanidinylated poly (ethylene glycol)-poly (ε-Caprolactone) polymer as a carrier, internally loaded with the photosensitizer chlorin e6. During root canal irrigation, the guanidino groups on the surface of CGP enabled effective biofilm penetration. These groups undergo oxidation by hydrogen peroxide in the aPDT process, triggering the release of NO without hindering the production of singlet oxygen. The generated NO significantly enhanced the antimicrobial capability and biofilm eradication efficacy of aPDT. Furthermore, CGP not only outperforms conventional aPDT in eradicating biofilms but also effectively promotes the repair of alveolar bone defects post-eradication. Importantly, our findings reveal that CGP exhibits significantly higher biosafety compared to sodium hypochlorite, alongside superior therapeutic efficacy in a rat model of apical periodontitis. Conclusions: This study demonstrates that CGP, an effective root irrigation system based on aPDT and NO, has a promising application in root canal therapy.
- Subjects
SODIUM hypochlorite; DENTAL pulp cavities; IRRIGATION (Medicine); BACTERIAL diseases; NITRIC oxide; ROOT canal treatment
- Publication
Journal of Nanobiotechnology, 2024, Vol 22, Issue 1, p1
- ISSN
1477-3155
- Publication type
Article
- DOI
10.1186/s12951-024-02483-8