Wara Dyah Pita Rengga, Nanda Delvina, Muhammad Ibnu Khawariz, Rindi Kirani, Eny Widhia Agustin
This study focuses on the synthesis and characterization of calcium hydroxide from green mussel shells (Perna viridis) as an endodontic intracanal medicament. Ca(OH)2 is known in dental nursing for its ability to kill bacteria, spores, or harmful microorganisms and support hard tissue healing through high alkaline pH. Green mussel shells, which contain more than 90% calcium carbonate (CaCO3), are potential raw materials for producing Ca(OH)2. The process begins by changing the shells into small sizes, followed by calcination at 850°C, 900°C, and 950°C for 4 hours to produce calcium oxide (CaO) powder. This powder is then reacted with distilled water by mixing for 24 hours to form Ca(OH)2 paste, which is then dried at 85°C and ground into a fine powder. Characterization was carried out using X-ray diffraction (XRD) and Scanning Electron Microscope (SEM), which showed that the final product had high crystallinity and a specific surface area of 328,456 m2/g. The content of Ca and O elements were 57.83% and 42.17%, respectively, and the presence of hydroxyl groups (OH-) from the Ca(OH)2 structure was proven. This study successfully synthesized high-quality Ca(OH)2 from green mussel waste, demonstrating its potential as an environmentally friendly alternative raw material for endodontic applications. © 2025 Author(s).
Chemical Engineering Department, Faculty of Engineering, Universitas Negeri Semarang, Semarang, Indonesia; Medical Profession Department, Faculty of Medicine, Universitas Negeri Semarang, Semarang, Indonesia
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