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Intrafibrillar mineralization of type I collagen fibrils is of great significance in dental remineralization, which is the key of caries prevention and treatment. Herein, two substances that have the remineralization ability, carboxylated polyamidoamine dendrimer (PAMAM–COOH) and nano-sized amorphous calcium phosphate (n-ACP) were combined to synthesize a novel nanomaterial, carboxylated polyamidoamine dendrimer/amorphous calcium phosphate nanocomposite (PAMAM–COOH/ACP). This article aims to evaluate the remineralization effect of PAMAM–COOH/ACP of dentin type I collagen fibrils  in vitro . Fluorescence labeling technique was innovatively used to observe and evaluate the remineralization effect. PAMAM–COOH/ACP showed superior remineralization ability of human dentin type I collagen fibrils, especially the intrafibrillar remineralization. Therefore, the novel nanomaterial PAMAM–COOH/ACP is promising to prevent and treat various diseases caused by dentin demineralization and to improve various dental materials.

journal of biomaterials science, polymer edition

Remineralization of human dentin type I collagen fibrils induced by carboxylated polyamidoamine dendrimer/amorphous calcium phosphate nanocomposite: an  in vitro  study