Multifunctional piezoelectric surfaces enhanced with layer-by-layer coating for improved osseointegration and...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Nanotechnology

Background:

• Implant failure often results from poor osseointegration and bacterial colonization.
• This necessitates costly revision surgeries and impacts patient outcomes.
• Developing advanced implantable devices with enhanced biocompatibility and antimicrobial properties is crucial.

Purpose of the Study:

• To engineer multifunctional polyvinylidene fluoride (PVDF) interfaces for improved osseointegration and antibacterial properties.
• To investigate the efficacy of coating PVDF films with essential oil nanoparticles and antibiofilm enzymes.
• To evaluate the performance of these modified surfaces under mechanical stimulation mimicking physiological conditions.

Main Methods:

• Utilized a layer-by-layer (LBL) approach to coat PVDF films with antibacterial essential oil nanoparticles and antibiofilm enzymes.
• Employed a bioreactor to apply mechanical dynamic conditions, simulating the in vivo environment for implants.
• Assessed antibiofilm activity against Pseudomonas aeruginosa and Staphylococcus aureus.
• Measured pre-osteoblast cell proliferation under dynamic mechanical stimulation.

Main Results:

• Confirmed successful LBL build-up on PVDF films.
• Demonstrated significant antibiofilm activity against both tested bacterial strains.
• Showcased enhanced pre-osteoblast cell proliferation under mechanical stimulation.
• The piezoelectric effect of PVDF contributed to improved cellular response.

Conclusions:

• PVDF-coated surfaces exhibit potent antibiofilm capabilities and promote osteoblast proliferation.
• The combination of piezoelectricity and LBL coating offers a dual approach to combat implant failure.
• This technology holds promise for developing next-generation implantable devices with superior performance.