Short dental implant biomechanics in the mandible bone tissue

Tsitsiashvili, A.M.; Silant'ev, A S; Panin, A.M.; Арутюнов, С Д

doi:10.17116/stomat20199806233

Cited by 5 publications

(1 citation statement)

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“…In the development of multilevel drug carriers, understanding their deformation behavior under tensile stress, which can reach up to 20 MPa in bone tissue–implant scenarios [ 41 , 42 ], is crucial. Our tensile tests produced stress–strain diagrams for both pure Ti and the CaP/Ti composite.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Corrosion Resistance and Mechanical Durability of the Composite PLGA/CaP/Ti Scaffolds for Orthopedic Implants

Prosolov,

Komarova,

Kazantseva

et al. 2024

Polymers

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In addressing the challenge of enhancing orthopedic implants, 3D porous calcium phosphate (CaP) coatings on titanium (Ti) substrates modified with poly(lactic-co-glycolic acid) (PLGA) were proposed. CaP coatings on Ti were deposited using the ultrasonic-assisted micro-arc oxidation (UMAO) method, followed by modification with PLGA through a dip coating process at concentrations of 5%, 8%, and 10%. The addition of PLGA significantly improved adhesive–cohesive strength according to the scratch test, while PLGA to CaP adhesion was found to be not less than 8.1 ± 2.2 MPa according to the peel test. Tensile testing showed a typical fracture of CaP coatings and mechanisms of brittle fracture. Corrosion resistance, assessed via gravimetric and electrochemical methods in 0.9% NaCl and PBS solutions, revealed PLGA’s substantial reduction in corrosion rates, with the corrosion current decreasing by two orders of magnitude even for the 5% PLGA/CaP/Ti sample. Also, the PLGA layer significantly enhanced the impedance modulus by two orders of magnitude, indicating a robust barrier against corrosion at all PLGA concentrations. Higher PLGA concentrations offered even greater corrosion resistance and improved mechanical properties. This research underscores the potential of using CaP- and PLGA-modified coatings to extend the life and functionality of orthopedic implants, addressing a significant challenge in biomedical engineering.

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Section: Resultsmentioning

confidence: 99%