Читать книгу Caries Excavation: Evolution of Treating Cavitated Carious Lesions - Группа авторов - Страница 16

Dentine has a unique histological tubular appearance. The tubules close to the dental pulp are numerous and wide open. Their diameter decreases gradually as they get away from the pulp and become very narrow or completely obliterated upon approaching the dentine-enamel junction (Fig. 2).

This suggests that the superficial dentine hinders bacterial infiltration when they reach the dentine surface. On the other hand, when bacteria reach the open dentine tubules they can invade the dental pulp more rapidly through the tubules. This may suggest significant consequences to the underlying pulp only if we consider the bacterial invasion consequences. However, the dental pulp established efficient protective mechanisms against this invasion.