Natural preparation of rice husk-derived silica and eggshell-derived calcium carbonate composite as a coating material for dental implant

Abstract

Background: The world is in front of two emerging problems being scarceness of virgin re-sources for bioactive materials and the gathering of waste production. Employment of the surplus waste in the mainstream production can resolve these problems. The current study aimed to prepare and characterize a natural composite CaO-SiO2 based bioactive material derived from naturally sustained raw materials. Then deposit this innovative novel bioactive coating composite materials overlying Yttria-stabilized tetragonal zirconia substrate. Mate-rials and method; Hen eggshell-derived calcium carbonate and rice husk-derived silica were extracted from natural resources to prepare the composite coating material. The manufac-tured powder was characterized via Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscope (FESEM), X-ray fluorescence (XRF), X-ray diffraction (XRD) and particle size analyzer. The bioactive composite was deposited through radiofre-quency (Rf) reactive magnetron sputtering overlying disc-shaped samples with a dimension of 10 mm diameter were prepared from partially sintered Yttria-stabilized tetragonal zirconia polycrystal (Y-TZP). Results: The particle size of the rice husk-derived ranged between (480.4 – 606.1) nm with a mean particle diameter of 541 nm. The eggshell derived calcium carbonate powder presented a particle size between (266.4-336) nm and a mean particle diameter of 299.9 nm. The XRD data revealed the crystalline nature and phase composition of the natural prepared calcium carbonate powder and demonstrate the monocrystalline nature of natural SiO2. FTIR spectrometer showed the emergence of novel spectra separated from the two innovative components. XRF analysis revealed that 99.4% of the rice husk is SiO2 while eggshell-derived powder is mainly composed of calcium oxide. Fe-SEM images of the coated zirconia exhibited average thickness of the natural CaCO3/SiO2 coat layer may reach to12.84 µ. Conclusion: The prepared composite derived from natural resource waste is suitable to be utilized as a coating material for ceramic dental implants with promising biological and mechanical properties.

Sustainable composites of eco-friendly polyethylene reinforced with eggshells and bio-calcium carbonate

“…The peak of greatest intensity occurs at approximately 29.5° (2θ). This aspect indicates that the in natura powder and the bio-CaCO 3 contain calcite as the main constituent phase, identified from the rhombohedral structure, corroborating Nawar et al [12] and Kareem and Naji [13] .…”

Exploring the Synergistic Potential of Pectin-Chitosan Composites for Advanced Drug Delivery and Biomedical Implant Applications: A Comprehensive Review and Future Perspectives

“…In order to improve osseointegration between implant surfaces and bone, microlevel characteristics can be applied to implant surfaces. 91,92 As the implant contact surface and bone surface become more intimate, the implant acquires stronger anchorage. 93 The rough texture of the surface encourages osteoblastic cell adhesion more quickly than the smooth texture.…”

Histological Characterization of Modified Calcite Paste as Pulpotomy Material in Partially Pulpotomized Rabbit Incisors

“…6,7 In many experimental animal studies, calcite derived from eggshells has been described to be an effective osteoconductive and biocompatible biomaterial. 8,9 In the dental field, calcite has been added to pulp capping material like MicroMega MTA, biodentine, and ProRoot MTA, and according to the manufacturers, it's used as a filler to enhance the mechanical properties and hydration reaction. [10][11][12][13] Furthermore, the biological performance of these capping materials seems to be greatly enhanced by the addition of CaCO 3 in comparison to other capping materials of low content like pure MTA and calcium hydroxide, 14 this evidence suggests that the calcite is biocompatible and osteoconductive and may be suitable to be used as pulp capping material.…”