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Questions and Answers
What are dental caries?
Dental caries are the loss of minerals from the tooth tissue due to acid from bacteria and fermented carbohydrates.
How do carbohydrates affect dental caries?
Frequent and prolonged exposure of teeth to dietary carbohydrates generates an acidic plaque environment, promoting demineralization of dental enamel and causing caries.
Caries can happen overnight.
False
What is plaque biofilm?
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Enamel can be remineralized after demineralization.
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Caries can lead to __________ destruction, which is irreversible.
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What happens if plaque is not removed over time?
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What factors can lead to rampant caries in children?
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Study Notes
Plaque Biofilm
- Plaque biofilm is a layer of bacteria, glycoprotein, and other substances that naturally forms on teeth.
- Saliva coats teeth, providing a sticky surface for bacteria and carbohydrates to adhere.
- Even after brushing, bacteria re-attach to teeth due to saliva's sticky nature.
- If plaque is not removed regularly, it can lead to dental caries.
Dental Caries
- Dental caries is the loss of tooth mineral due to acid attack.
- Acid is produced by bacteria in the plaque biofilm as they ferment carbohydrates.
- Caries can initially affect enamel, which has a small amount of protein, and may be reversible through remineralization.
- However, if the acid attacks the dentin (deeper layer of tooth), or if the plaque biofilm breaks down tooth protein, it can become irreversible.
Cavities
- When caries reach the irreversible stage, a cavity is formed.
- Cavities are visible as darker areas on teeth, and may be surrounded by stains.
- Cavities often occur in areas with grooves, where bacteria can easily lodge.
- Cavities can develop in previously affected teeth, making them more susceptible to further decay.
Caries in Children
- Children are particularly susceptible to early childhood caries, often termed “rampant caries”.
- Frequent and prolonged exposure to carbohydrates contributes to the acidic environment that promotes caries development.
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Description
This quiz covers essential topics regarding plaque biofilm, dental caries, and cavities. Learn how these factors affect tooth health and the importance of managing plaque to prevent serious dental issues. Test your knowledge on the formation and consequences of untreated plaque.
