12 Questions
What is the primary role of odontoblasts in dentin formation?
Generating an extracellular collagen matrix
What gives dentin the capability of reacting to physiologic and pathologic stimuli?
Odontoblastic cell processes
Where are the cell bodies of odontoblasts located?
In the pulp cavity
What is the composition of mature dentin?
45% - 50% inorganic, 30% organic, 25% water
What are small lateral openings along the tubule walls called?
Canaliculi
When does dentin formation begin in relation to enamel formation?
Before enamel formation
What causes the formation of lateral canals in dentin?
Presence of secondary branches of adjacent odontoblastic processes
At which junction does the transition between enamel and dentin occur?
Dentinoenamel junction (DEJ)
What is the unmineralized zone of dentin next to the cell bodies of odontoblasts called?
Predentin
What is the name of the small canals that extend through the entire width of dentin, from the pulp to the DEJ?
Dentinal tubules
In mature dentin, how far does the odontoblastic process extend within the dentinal tubule?
About one-third the dentinal thickness
At what rate does dentin formation spread from areas subjacent to the cusp tip or incisal ridge to the apex of the root?
~4 μm/day
Test your knowledge about the formation of dentin, including mineralization of the collagen matrix, predentin, and the rate of dentin formation. This quiz covers the process of dentin formation in dentistry.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
