Questions and Answers
How many maxillary premolars are present in the human mouth?
Four
Which teeth are anterior to the maxillary premolars?
Canines
Which maxillary premolar is larger?
Maxillary first premolar
Why are premolars also called bicuspids?
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Which of the following teeth lacks functional cusp?
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Premolars are intermediate between molars and canines in which of the following aspects?
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Which characteristic is common to all posterior teeth?
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What is the relative facio-lingual measurement of posterior teeth compared to their mesio-distal measurement?
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Study Notes
Permanent Maxillary Premolars
- There are four maxillary premolars, two in the right and two in the left, located posterior to the canines and anterior to the molars.
- Maxillary premolars have shorter crowns and shorter roots compared to maxillary canines.
- The maxillary first premolar is larger than the maxillary second premolar.
- Premolars succeed deciduous molars and are named so because they are anterior to molars in permanent dentition.
Characteristics
- Labial aspect of canine and buccal aspect of premolar are similar in form.
- Premolars and molars are used to grind food, while canines are used to tear food.
- Premolars are positioned in the center of the dental arch.
Common Features of Posterior Teeth
General Characteristics
- Greater relative facio-lingual measurement compared to mesio-distal measurement.
- Broader contact areas.
- Contact areas are nearly at the same level.
- Less curvature of the cervical line mesially and distally.
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