Dentin is arranged in what structure running from the pulp to the enamel?

Dentin is indeed organized in a structure known as tubules, which are microscopic canals that extend from the dental pulp to the enamel. These dentinal tubules play a critical role in tooth sensitivity and health. They contain the processes of odontoblasts, which are the cells responsible for dentin formation. The arrangement of these tubules allows them to transport nutrients and sensory information, connecting the dental pulp to the exterior layers of the tooth. This unique structure is essential for maintaining the vitality of the tooth and responding to external stimuli.

Understanding the role and arrangement of tubules in dentin can help in diagnosing and treating various dental conditions, such as sensitivity and decay, making it fundamental knowledge in small animal dentistry.