What structure creates the wall of the dentinal tubule?

The structure that creates the wall of the dentinal tubule is peritubular dentin. This type of dentin is highly mineralized and surrounds the dental tubules within a tooth's dentin layer. The dentinal tubules are tiny channels that run through the dentin and house the processes of odontoblasts, which are the cells responsible for dentin formation.

Peritubular dentin forms a sheath around each tubule and contributes to the overall structural integrity and function of the dentin. Its mineralized nature helps to protect the dental tubules and maintain the health of the tooth by providing a barrier to dental caries and other potential damage.

Understanding peritubular dentin is crucial for comprehending how the dentin supports tooth health, especially in terms of responding to stimuli such as temperature changes or pressure, which can affect the odontoblasts and the pulp within the tooth.