The interrelationship of microstructure and hardness of human coronal dentin using reference point indentation technique and micro-Raman spectroscopy

Tooth dentin is a hierarchical biocomposite composed of different structural elements, such as, dentinal tubules, highly-mineralized peritubular, intertubular dentin that is composed of type I collagen, and dentinal fluid [1]. The distribution of structural elements from superficial dentin, i.e., by the dentin-enamel junction (DEJ), to deep dentin, i.e., near the border of the coronal pulp chamber, results in an anisotropic biocomposite in which properties vary by location. Studies that have evaluated the structure and material properties of dentin suggest that the mechanical properties of dentin are dependent on its internal structure, composition, and external environment [2 –4].
Source: Dental Materials - Category: Materials Science Authors: Source Type: research