Odontoblast

Odontoblasts are specialized cells of mesenchymal origin, derived from the cranial neural crest, that form the outer layer of the dental pulp and are responsible for dentinogenesis (StatPearls, 2023). Their primary biological function is the secretion of the organic dentin matrix and its subsequent mineralization, a process mediated by proteins such as Dentin Sialophosphoprotein (DSPP) and Dentin Matrix Protein 1 (DMP1) (PubMed, PMID: 15347600). Odontoblasts also act as sensory receptors for pain and as the first line of immunological defense in the tooth, expressing Toll-like receptors (TLRs) to detect bacterial pathogens (Frontiers in Physiology, 2018). In clinical practice, they are the cellular targets for vital pulp therapy, where materials like Mineral Trioxide Aggregate (MTA) or calcium hydroxide are applied to stimulate the formation of reparative dentin (Journal of Endodontics, 2015). These materials work by creating an alkaline environment or releasing bioactive ions that trigger the differentiation of dental pulp stem cells into odontoblast-like cells. While not a single molecular target, the signaling pathways within odontoblasts, such as the TGF-beta/BMP pathway, are key areas of research for dental tissue engineering and regenerative medicine. Dysregulation of odontoblast function is linked to conditions like dentinogenesis imperfecta and the progression of dental caries. Understanding their interaction with biomaterials is crucial for developing therapies that preserve tooth vitality.

Other names

Dentin-forming cellDental pulp cell

Induction of reparative dentinogenesis via activation of the p38 MAPK and BMP/Smad signaling pathways in odontoblasts and dental pulp stem cells.