Regenerative dentistry with multifunctional nanomaterials: Orchestrating immunomodulatory, pro-angiogenic, stem cell activating, and antibacterial responses.

Abstract

Oral and dental tissues are continuously challenged by a dynamic microbial milieu and recurrent inflammatory insults. Microbiota-driven dysbiosis establishes a self-reinforcing pathogenic cycle, and spontaneous reversion to homeostasis after injury is uncommon. Contemporary care is largely reparative, restoring only limited structure and function. Durable regeneration, by contrast, requires a staged and integrated program: (i) antimicrobial debulking of pathogenic biofilms, (ii) balanced immunomodulation to resolve inflammation, (iii) pro-angiogenic support to perfuse the remodeling matrix, and (iv) recruitment and lineage-directed differentiation of endogenous stem/progenitor cells. Multifunctional nanomaterials are uniquely positioned to deliver spatially and temporally programmed biochemical and biophysical cues for each phase. By integrating antibacterial components with immune-regulating, angiogenic, and stem cell-activating functions, nanoengineered platforms can reconstruct a pro-regenerative microenvironment that approximates native dental tissue. This review outlines the dental indications most in need of regeneration, delineates the synergistic mechanisms that underlie successful repair, and highlights emerging nanomaterial designs that activate these mechanisms. We also discuss design principles, efficacy readouts, and translational considerations to accelerate clinically durable restoration of dental structure and function, ultimately improving patients' quality of life.