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Questions and Answers
What is the composition of dentine?
What is the composition of dentine?
70% inorganic minerals, 20% organic materials, 10% water
Dentine tubules extend from the DEJ to the border of the pulp chamber.
Dentine tubules extend from the DEJ to the border of the pulp chamber.
True
What is the function of the dentine tubules?
What is the function of the dentine tubules?
Withstand forces, communicate with the pulp, and transmit sensations.
What are the three main types of dentine?
What are the three main types of dentine?
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Which of the following types of dentine is protective?
Which of the following types of dentine is protective?
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Which of the following is the most important clinical significance of dentine?
Which of the following is the most important clinical significance of dentine?
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What are the 3 main types of stimuli that initiate tertiary dentine?
What are the 3 main types of stimuli that initiate tertiary dentine?
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Tertiary dentin is a protective type of dentin.
Tertiary dentin is a protective type of dentin.
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Study Notes
Primary Dentine
- Bulk of dentine within the tooth that forms prior to completion of root formation.
- Made up of both mantle & circum-pulpal dentine
Secondary Dentine
- Begins after root formation is complete.
- Forms slowly throughout life.
- Does not form evenly - Concentrated over the roof & floor of the pulp.
- Over time, reduces the size of the pulp chamber - pulp recession.
- The structure is similar to primary dentine with tubules however it is less regular & less distinct.
Tertiary Dentine
- Reactionary or reparative forms in response to various stimuli.
- It is usually localised to the area of stimulus.
- The structure varies in accordance with the intensity & duration of stimulus.
- May affect the odontoblasts if strong enough.
- May have tubules continuous with secondary dentine or may not appear irregular in arrangement.
Clinical Significance of Tertiary Dentine
- Various stimuli initiating tertiary dentine:
- Caries
- Attrition
- Abrasion (from toothbrush)
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Description
Explore the different types of dentine in dental anatomy, including primary, secondary, and tertiary dentine. Understand their formation, structure, and clinical significance in response to various stimuli. This quiz will test your knowledge on the role of dentine in tooth development and health.
