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Natural coral exoskeleton and coralline hydroxyapatite have been used as bone replacement graft for repairing of bone defects in animal models and humans since two decades ago. These bone replacement grafts have an osteoconductive, biodegradable and biocompatible features. Currently, three lines of researches in bone tissue engineering are conducting on corals. Corals have been used for construction of bony composites, stem cells attachments, and the growth factors-scaffold-based approaches. This review have paid to the wide range of coral use in clinical experiments as a bone graft substitute and cell-scaffold-based approaches in bone tissue engineering.