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Platelet-Derived Extracellular Vesicle Functionalization of Ti Implants

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Published on: August 5, 2021

Silk electrogel coatings for titanium dental implants.

Roberto Elia¹, Courtney D Michelson², Austin L Perera²

¹Department of Biomedical Engineering, Tufts University Medford, Massachusetts, USA.

Journal of Biomaterials Applications

|November 27, 2014

Summary

Researchers developed two silk fibroin coating methods for dental implants. These biocompatible, biodegradable coatings are mechanically robust and withstand implantation stresses.

Keywords:

Electrogelation adhesive silk coating bioactive coating dental implant coating electrodeposition

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Area of Science:

Biomaterials Science
Dental Materials Science
Tissue Engineering

Background:

Dental implants require robust coatings to ensure osseointegration and longevity.
Current coating materials may have limitations in biocompatibility, biodegradability, or mechanical strength.

Purpose of the Study:

To develop biocompatible and biodegradable silk fibroin coatings for dental implants.
To establish novel, reproducible methods for applying these coatings to titanium substrates.
To evaluate the mechanical properties and stability of the silk-based coatings.

Main Methods:

Developed two techniques: electrodeposition and melted electrogel dispensing of silk fibroin onto titanium.
Assessed coating uniformity and thickness using stylus profilometry and a dial thickness gauge.
Evaluated mechanical adhesion strength using a universal mechanical testing machine and implant socket mimics.

Main Results:

Achieved uniform, controllable silk fibroin coatings ranging from 35 to 1654 µm in thickness.
Coatings demonstrated resistance to delamination during simulated implantation.
Electrogel coatings exhibited an adhesive strength of 0.369 ± 0.09 MPa, comparable to other biomaterials.

Conclusions:

Novel electrodeposition and melted electrogel techniques successfully produced mechanically robust, biocompatible, and biodegradable silk fibroin coatings.
These silk-based coatings offer a promising alternative for dental implant applications.
The developed methods provide a tunable and safe approach for enhancing dental implant performance.