Morphological Differences Between Primary and Permanent Teeth

What is the main reason for the exaggerated inflammatory response in primary teeth compared to permanent teeth?

Larger apical foramen in primary teeth (correct)
Higher density of innervation in primary teeth
Smaller apical foramen in primary teeth
Lower degree of cellularity and vascularity in primary teeth

What is the key difference in the enamel and dentin layers between primary and permanent teeth?

Primary teeth have the same thickness of enamel and dentin as permanent teeth.
Primary teeth have thicker enamel and dentin layers compared to permanent teeth.
Primary teeth have varying thicknesses of enamel and dentin compared to permanent teeth.
Primary teeth have thinner enamel and dentin layers compared to permanent teeth. (correct)

What is the typical pulp chamber anatomy of the maxillary first molar (Upper D)?

Pulp chamber has a rhomboidal shape
Pulp chamber has 4 pulpal horns
Pulp chamber has 2 pulpal canals
Pulp chamber has a triangular shape with rounded corners (correct)

How does the pulp chamber anatomy of the maxillary second molar (Upper E) differ from the maxillary first molar (Upper D)?

The maxillary second molar has 4 pulpal horns, while the first molar has 3 (C) Signup and view all the answers

What is the key difference in the mesiodistal width of anterior primary teeth compared to their permanent successors?

Primary anterior teeth have a narrower mesiodistal width than permanent anterior teeth. (C) Signup and view all the answers

Which of the following is NOT a characteristic of the mandibular first molar (Lower D) pulp chamber?

Occlusal view of pulp chamber is triangular (A) Signup and view all the answers

What is the key difference in the mesiodistal width of primary molars compared to their permanent successors (premolars)?

Primary molars have a wider mesiodistal width than permanent premolars. (B) Signup and view all the answers

What is the key difference in the crown shape between primary and permanent posterior teeth?

Primary posterior teeth have more pronounced cervical constriction and buccal cervical bulge compared to permanent posterior teeth. (A) Signup and view all the answers

What is the typical number of pulp canals in the mandibular second molar (lower E)?

3 canals (C) Signup and view all the answers

How does the sensitivity to pain differ between primary and permanent teeth?

Primary teeth are less sensitive to pain due to lower density of innervation (A) Signup and view all the answers

What is the key difference in the presence of mammelons between primary and permanent anterior teeth?

Mammelons are present in permanent anterior teeth but absent in primary anterior teeth. (A) Signup and view all the answers

What is the key difference in the color between primary and permanent teeth?

Primary teeth are lighter and whiter (bluish white) in color compared to permanent teeth. (B) Signup and view all the answers

What is a common difference between the occlusal surface of primary maxillary first molars and permanent teeth?

Primary molars have a rectangular occlusal surface, while permanent teeth have a triangular occlusal surface. (A) Signup and view all the answers

In primary mandibular first molars, what distinguishes the MB cusp from the DL cusp?

The MB cusp is rounded, while the DL cusp is sharp at the tip. (C) Signup and view all the answers

Which statement accurately describes the root differences between primary and permanent teeth?

Primary teeth have roots that are poorly defined, small, and rounded, while permanent teeth have long and slender roots. (B) Signup and view all the answers

What distinguishes the enamel rod direction in primary anterior teeth from that in permanent teeth?

Primary anterior teeth have enamel rods that run perpendicular to the outer surface, while permanent teeth have parallel-running enamel rods. (A) Signup and view all the answers

What is a distinguishing feature of the crown morphology of primary mandibular molars compared to permanent molars?

Primary mandibular molars have more lateral branching and apical ramifications in root canals than permanent molars. (C) Signup and view all the answers

Which statement accurately reflects a difference between the mesiodistal width of primary and permanent molars?

The mesiodistal width of primary molars is greater than that of permanent molars. (C) Signup and view all the answers