Exosome-Based Therapy for Osseous Regeneration in Dental and Maxillofacial Applications.

Exosomes, nanoscale extracellular vesicles, have garnered substantial interest in biomedical research owing to their critical roles in intercellular communication, diagnostics, and regenerative therapeutics. Among biomolecules investigated in regenerative medicine, exosomes are one of the most intensively researched. While no clinical trials have yet been conducted to assess their regenerative efficacy in human dental applications, a rapidly growing body of preclinical research highlights their therapeutic potential in oral and maxillofacial regeneration. Dental tissue-derived exosomes, most notably from dental pulp stem cells, periodontal ligament stem cells, gingival fibroblasts, and stem cells from exfoliated deciduous teeth, have shown the ability to promote regeneration of bone, the periodontal ligament and other supporting tissues. Moreover, these exosomes have demonstrated potential roles in modulating orthodontic tooth movement and alleviating temporomandibular joint disorders. Preclinical studies included in this review consistently reported improved bone regeneration outcomes, such as increased bone volume, mineralization, and osteogenic marker expression following exosome application. Importantly, exosomes have also exhibited potent immunomodulatory effects, notably through inhibition of inflammation in bone defects and periodontitis models. The therapeutic versatility of exosomes is further reflected in their application across several fields of dentistry, such as periodontitis therapy, pulp regeneration, alveolar bone regeneration, and immune regulation. The majority of the studies highlighted the anti-inflammatory, pro-angiogenic, and osteoinductive features of exosomes, derived from diverse cellular sources. These promising preclinical outcomes collectively indicate that exosome-based therapies hold strong potential for translation into clinical dental practice, offering a novel, cell-free, and biologically targeted strategy to craniofacial tissue regeneration.