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Questions and Answers
What is the primary function of the pulp in the tooth?
What is the term for the division of the root trunk into two or more roots?
What is the surface of the tooth that faces the tongue?
What is the term for the part of the pulp that is located inside the crown of the tooth?
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How many roots do maxillary molars typically have?
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What is the surface of the tooth facing towards the line median called?
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What is the surface of the tooth adjacent to another tooth called?
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How are the crown and root of a tooth divided for description purposes?
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What is the name of the angle formed by the junction of the labial and mesial surfaces?
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Which of the following teeth do not have mesial surfaces touching adjacent teeth?
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Study Notes
Tooth Structure
- The tooth has three hard tissues: enamel, dentine, and cementum.
- Dentine forms the bulk of the tooth structure and is produced by the pulp.
- The pulp is the soft tissue within the tooth that provides innervation and blood supply.
Pulp Chamber and Canal
- The pulp consists of two parts: the pulp chamber and the pulp canal.
- The pulp chamber is located inside the dental crown, while the pulp canal is located inside the root.
Roots of Teeth
- The number of roots varies: maxillary and mandibular premolars have one root, while maxillary premolars have two roots that bifurcate, and mandibular molars have three roots that trifurcate.
- A multirooted tooth has a trunk root that branches into roots.
Tooth Surfaces
- Teeth can have 4 or 5 surfaces: labial, buccal, lingual, occlusal, and proximal.
- The labial surface faces the lip, the buccal surface faces the cheek, and the lingual surface faces the tongue.
- The occlusal surface is the biting surface, and the proximal surface faces adjacent teeth.
- The mesial surface faces the median line, and the distal surface faces away from the median line.
Divisions of the Crown and Root
- The crown and root can be divided into thirds for descriptive purposes.
- Teeth can be divided into incisal, mesial, distal, buccal, and lingual surfaces.
Angle and Point
- The junction of two surfaces forms an angle, which can be named according to the surfaces that meet (e.g., labial-mesio angle).
- The junction of three surfaces forms a point, which can be named according to the surfaces that meet (e.g., Incisal-linguo-mesio point).
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Description
This quiz covers the different parts of a tooth, including the enamel, dentine, and cementum, as well as the pulp and its functions. Learn about the structure and composition of teeth and their tissues.
