Podcast
Questions and Answers
What characteristic of the roots of the permanent molars creates space for the permanent premolar crown to develop?
What characteristic of the roots of the permanent molars creates space for the permanent premolar crown to develop?
- Less flare
- Straight roots
- Thicker roots
- More flare (correct)
Compared to the first molar, the roots of the deciduous second molar do what?
Compared to the first molar, the roots of the deciduous second molar do what?
- Grow longer
- Flare less
- Flare more (correct)
- Stay the same
What is the difference between the roots of the deciduous and permanent molars?
What is the difference between the roots of the deciduous and permanent molars?
- Deciduous molars have thicker roots
- Deciduous molars have more flare (correct)
- Permanent molars have straight roots
- Permanent molars have more flare
What is the result of the flare of the roots of the permanent molars?
What is the result of the flare of the roots of the permanent molars?
What is the relationship between the flare of the roots of the deciduous and permanent molars?
What is the relationship between the flare of the roots of the deciduous and permanent molars?
What forms the walls of the pulp chamber?
What forms the walls of the pulp chamber?
How many pulp chambers are found in each tooth?
How many pulp chambers are found in each tooth?
What is the function of the pulp horns?
What is the function of the pulp horns?
In a cusped tooth, how many pulp horns are typically found?
In a cusped tooth, how many pulp horns are typically found?
What is the location of the pulp chamber in a tooth?
What is the location of the pulp chamber in a tooth?
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Study Notes
Root Structure of Deciduous and Permanent Molars
- Permanent molars have more flare, or spreading, in their roots compared to deciduous molars.
- This additional flare in permanent molars creates space for the permanent premolar crown to develop.
- The roots of deciduous second molars flare more than those of the first molar.
- In contrast, the roots of permanent molars flare less than those of the deciduous molars.
Pulp Chamber Structure
- The pulp chamber is located in the most incisal portion of the pulp cavity.
- There is a single pulp chamber in each tooth.
- The walls of the pulp chamber are formed by the innermost surface of the dentin.
- Each pulp chamber has a roof at its incisal border, featuring projections called pulp horns.
- The number of pulp horns in each cusped tooth (molars, premolars, and canines) is typically one horn per sizeable cusp.
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