Specialists at Moscow Polytech have created new implants for facial bone reconstruction. The university is developing bioresorbable polymers. They can replace metal plates in the treatment of lower jaw fractures and facial bone reconstruction.
Modern metal structures, although effective, can create problems associated with stress shielding. Under high mechanical loads on the bones, the risk of secondary fractures increases. Ilya Vasiliev, Associate Professor of the Printing Arts Faculty, is researching the properties of the latest polymer compositions based on polylactide containing polyesters and antimicrobial additives.
Polylactide is distinguished by high rigidity and strength, as well as low deformability. To improve the characteristics, polycaprolactone, which has high deformation, is added to its matrix. Their interaction at the supramolecular level helps to balance the deformation-strength properties of the final product. Polycaprolactone can be used independently or modified with antimicrobial fillers.
The elastic modulus of polylactide is close to the elastic modulus of bones, which is called isoelasticity. In addition, the biodegradable matrix promotes the growth of new regenerative cells in the implant area, which allows for complete restoration of damaged bones.