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Evaluation of mineral induction ability and cytotoxicity of carbonated hydroxyapatite for pulp tissue regeneration: an study.
Restor Dent Endod
November 2024
Department of Cariology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, TN, India.
Objectives: This study aimed to evaluate carbonated hydroxyapatite (CHA)'s ability for mineral induction and its cytotoxicity with human dental pulp cells.
Materials And Methods: Precursors for the study include di-ammonium hydrogen phosphate and calcium nitrate tetrahydrate, with sodium hydrogen carbonate added to achieve different levels of carbonate substitution. The synthesized CHA samples are characterized using X-ray diffraction, Fourier transform infrared spectroscopy, and Raman spectroscopy.
Diversity and dynamic response of anaerobic ammonia oxidation granular sludge.
J Environ Sci (China)
June 2025
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
Red anaerobic ammonia oxidation (Anammox) granular sludge (AnGS) has been reported in successfully operating Anammox systems, and its color is associated with sludge activity. However, in long-term operating systems, AnGS exhibits different sensory colors, physical structures, community structures, and denitrification performance, but the relationship between them has not yet been elucidated. The AnGS of the Anammox system, which has been in operation for more than a decade, can be divided into two main categories: red and white.
View Article and Find Full Text PDFCopper Versatility in Hydroxyapatite: Valence States, Clusters, and Optical Absorption Properties.
Inorg Chem
November 2024
Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France.
Article Synopsis
- The reaction of hydroxyapatite (HA) and CuO at high temperatures creates pure Cu-HA phases with a specific formula, where copper atoms occupy the hexagonal tunnels in the structure.
- Heat treatment leads to the reduction of copper ions, enhancing the stability of copper in the HA structure and producing violet-colored samples due to the incorporation of monovalent copper.
- Copper influences the optical properties of HA, as lower temperature preparations allow it to substitute calcium and form copper-copper interactions, which results in a shift in color from violet to blue, depending on the amount of copper present.
Evaluation of the immune response of peripheral blood mononuclear cells cultured on Ti6Al4V-ELI polished or etched surfaces.
Front Bioeng Biotechnol
October 2024
Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases-IRCAD, Università del Piemonte Orientale, Novara, Italy.
Introduction: While titanium and its alloys exhibit excellent biocompatibility and corrosion resistance, their polished surfaces can hinder fast and effective osseointegration and other biological processes, such as angiogenesis, due to their inert and hydrophobic properties. Despite being commonly used for orthopedic implants, research focuses on developing surface treatments to improve osseointegration, promoting cell adhesion and proliferation, as well as increasing protein adsorption capacity. This study explores a chemical treatment intended for titanium-based implants that enhances tissue integration without compromising the mechanical properties of the Ti6Al4V substrate.
View Article and Find Full Text PDFAncient and modern bone diagnosis: Towards a better understanding of chemical and structural feature alterations.
Spectrochim Acta A Mol Biomol Spectrosc
February 2025
Centre of Physics of Minho and Porto Universities (CF-UM-PT), University of Minho, 4804-058 Guimarães, Portugal.
Chemical and structural alterations hold great importance in the field of diagenesis. Attenuated Total Reflectance - Fourier Transform Infrared Spectroscopy (ATR-FTIR) is a valuable method for examining bio-apatite composition changes. Infrared spectroscopy (IR) and X-ray diffraction (XRD) were employed to analyze both modern and archaeological bone specimens.
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