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[Biocompatibility of polylactic acid-absorbable root post film]
Zhao Zheshan1, Huang Hua1, Qiu Rongmin1
1Dept. of Pediatric Dentistry, Hospital of Stomatology, Guangxi Medical University, Nanning 530021, China.
Summary
Polylactic acid (PLA) root post films show excellent biocompatibility. These absorbable films are safe for use and suitable for further clinical research.
Area of Science:
- Biomaterials Science
- Dental Materials
- Tissue Engineering
Background:
- Absorbable root posts are crucial in restorative dentistry.
- Solvent evaporation is a method for preparing polymer films.
- Assessing biocompatibility is essential for clinical applications.
Purpose of the Study:
- To evaluate the biocompatibility of polylactic acid (PLA)-absorbable root post films.
- To determine the safety of PLA films for potential dental use.
Main Methods:
- Prepared PLA root post films using solvent evaporation.
- Assessed cytotoxicity using human gingival fibroblasts (HGF) and MTT assay.
- Evaluated HGF growth on PLA films and in vitro.
- Conducted in vivo biocompatibility tests in SD rats using HE staining.
Main Results:
- PLA film-leaching liquor showed no significant toxicity to HGF.
- HGF survival and proliferation rates were comparable to controls.
- HGF successfully grew on the PLA film surface.
- In vivo studies indicated minimal inflammation and foreign body reactions, meeting biological safety standards.
Conclusions:
- PLA-absorbable root post films exhibit good biocompatibility.
- These films are suitable for further clinical investigation in dentistry.
