Journal
BIOMIMETICS
Volume 7, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/biomimetics7020035
Keywords
biomimetics; nanodentology; nanocrystalline carbonate-substituted hydroxyapatite; bisphenol A-glycidyl methacrylate; degree of conversion; Vickers hardness
Funding
- Russian Science Foundation [21-15-00026]
- Ministry of Science and Higher Education of Russia [075-15-2021-1351]
- Russian Science Foundation [21-15-00026] Funding Source: Russian Science Foundation
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The application of biomimetic strategies and nanotechnologies has led to the development of a new class of modern adhesion restoration materials, including different nanofillers. This study analyzes the molecular properties of biomimetic adhesives and identifies the optimal composition for high polymerisation and mechanical hardness. The introduction of nano-cHAp fillers in the adhesive matrix results in changes in chemical bonding, increasing the hardness and degree of conversion of the adhesive.
The application of biomimetic strategies and nanotechnologies (nanodentology) has led to numerous innovations and provided a considerable impetus by creating a new class of modern adhesion restoration materials, including different nanofillers. An analysis of the molecular properties of biomimetic adhesives was performed in this work to find the optimal composition that provides high polymerisation and mechanical hardness. Nanocrystalline carbonate-substituted calcium hydroxyapatite (nano-cHAp) was used as the filler of the light-cured adhesive Bis-GMA (bisphenol A-glycidyl methacrylate). The characteristics of this substance correspond to the apatite of human enamel and dentin, as well as to the biogenic source of calcium: avian eggshells. The introduction and distribution of nano-cHAp fillers in the adhesive matrix resulted in changes in chemical bonding, which were observed using Fourier transform infrared (FTIR) spectroscopy. As a result of the chemical bonding, the Vickers hardness (VH) and the degree of conversion under photopolymerisation of the nano-cHAp/Bis-GMA adhesive increased for the specified concentration of nanofiller. This result could contribute to the application of the developed biomimetic adhesives and the clinical success of restorations.
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