| Titre : | Local Production of a Dental Ceramic Coating |
| Auteurs : | Acid Omar Elfarouk, Auteur ; Fettouh Hocine, Auteur ; O. Belarbi, Directeur de thèse |
| Type de document : | texte imprimé |
| Editeur : | 3- University Of Saïda- Dr Moulay Tahar Technology Faculty Department of Process Engineering, 2024/2025 |
| Format : | 68 P |
| Accompagnement : | CD |
| Langues: | Français |
| Catégories : | |
| Mots-clés: | carbide lime ; hydroxyapatite ; zinc-doped hydroxyapatite ; antibacterial ; dental coatings ; biomaterials ; waste valorization. |
| Résumé : |
New bioactive materials for dental ceramic coatings were developed from an industrial residue,
carbide lime, a by-product of acetylene production predominantly composed of calcium hydroxide. After purification and sulfur removal, this waste was converted into hydroxyapatite powders by a wet-chemical precipitation method, using different particle-size fractions of the carbide lime to tailor the crystallinity and morphology of the synthesized hydroxyapatite. These powders were then used as precursors for zinc-doped hydroxyapatite obtained via a mechanochemical route, yielding materials with controlled particle size and preserved apatite structure. The zinc-modified hydroxyapatites exhibited measurable antibacterial activity against oral bacteria, with inhibition zones between 9 and 25 mm depending on particle size, zinc precursor and bacterial strain, while the ZnA-45Hap composition showed the most balanced behavior, combining limited antibacterial effect with good compatibility for oral applications. This approach demonstrates the feasibility of valorizing local industrial waste into functional bioceramic materials for future dental coating applications. |
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Local Production of a Dental Ceramic Coating Adobe Acrobat PDF |
