pulpdentine

Pulpdentine is a term used in some scientific discussions to describe a proposed transitional tissue at the boundary between dental pulp and dentin. The concept portrays a continuous dentin-pulp interface rather than two sharply separated tissues, reflecting the close developmental and functional relationship between odontoblasts and the pulp core.

Proponents describe pulpdentine as a zone that may contain cellular elements typical of pulp tissue alongside inorganic mineralized matrix characteristic of dentin. In this view, odontoblast processes extend into a predentin-like matrix within this interfacial region, creating a gradual transition from soft pulp tissue to mineralized dentin.

Pulpdentine has been referenced most often in the contexts of tooth development, injury response, and reparative dentinogenesis. Some authors propose that it could form during dentin formation or in response to pulpal exposure, helping to preserve vitality by smoothing the transition between living pulp and mineralized tissue.

However, pulpdentine is not universally accepted as a distinct anatomical or histological entity. It appears in a limited portion of the literature and is not included as a standard component of the dentin-pulp complex in mainstream dental texts. Ongoing research aims to clarify its existence, defining histological criteria, formation mechanisms, and potential implications for endodontic treatment and regenerative strategies.

Related terms include pulp, dentin, dentin-pulp complex, and predentin. The terminology reflects a broader interest in understanding interfacial tissues within the tooth and their roles in development and repair.