MCQs on Oral Histology - Dentin

# Dentinal tubules are :
A. Concave
B. Straight
C. S-Shaped
D. None of the above

# The cells that form secondary dentin are:
A. Cementoblasts
B. Fibroblasts
C. Odontoblasts
D. Osteoblasts

# Dead tracts in ground section appears as:
A. Dentinal tubules
B. Coarse fibril bundles arranged at right angle to the dentinal surface
C. Black in transmitted light and white in reflected light
D. White in transmitted light and dark in reflected light

# The organic lining of the calcified dentinal tubules is known as:
A. Lamina propria
B. Lamina lucida
C. Lamina limitans
D. Lamina densa

# Which of the following dentinal layers is more mineralized?
A. Peritubular dentin
B. Inter-tubular dentin
C. Dentinal tubules
D. Circumpulpal dentin

# The type of tertiary dentin which contains cellular inclusions is found in:
A. Sclerotic dentin
B. Mantle dentin
C. Predentin
D. Osteodentin

# The dentin adjacent to the dentinoenamel junction is called the :
A. Mantle dentin
B. Circumpulpal dentin
C. Predentin
D. Osteodentin

# Korffs fibres are seen in :
A. Mantle dentin
B. Secondary dentin
C. Reactionary dentin
D. Intradermal tubules

# Migration of odontoblasts into dentinal tubules occurs during :
A. Cavity preparation
B. Dehydration
C. Water irrigation
D. None of the above

# Tome's fibers are:
A. With out but not with in the dentin
B. Odontoblastic processes in dentinal tubules
C. Types of Sharpey's fibers
D. Originate from Tome's granular layer


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