Metastable Calcium Phosphate Cluster-Involved Mineralization Process Regulated by a Dual Biomolecule System Toward...

Area of Science:

• Biomaterials Science
• Nanotechnology
• Dental Research

Background:

• Dentin hypersensitivity affects many people due to exposed dentinal tubules.
• Biomimetic mineralization offers a promising treatment strategy for dentin hypersensitivity.
• Materials need to penetrate tubules and then occlude them through size and phase transformation.

Purpose of the Study:

• To develop a metastable calcium phosphate cluster (MCPC)-involved mineralization process.
• To regulate the mineralization process using bovine serum albumin (BSA) and poly-L-lysine (PLL).
• To manage dentin hypersensitivity through effective tubule occlusion and antibacterial action.

Main Methods:

• Utilized dual biological macromolecules (BSA and PLL) to stabilize and tune calcium phosphate clusters.
• Generated amorphous MCPC with ultrasmall size (1-2 nm) for tubule penetration.
• Observed aggregation and crystallization into larger, immobile particles within dentinal tubules.

Main Results:

• Achieved effective occlusion of exposed dentinal tubules via in situ mineralization.
• Demonstrated significant antibacterial performance against oral bacteria.
• Confirmed the metastable nature of the mineralization process for efficient tubule sealing.

Conclusions:

• Devised a regulatory approach for mineralization-active clusters.
• Established an efficient method for managing dentin hypersensitivity.
• The developed system shows potential for clinical application in treating dentin hypersensitivity.