Dental Defects and Caries
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Questions and Answers

What is the characteristic of the infected dentin in acute caries?

  • It has a light color (correct)
  • It has a dark color
  • It is hard
  • It is difficult to remineralize

What is the primary cause of dental caries?

  • A chronic and biofilm-mediated disease modulated by diet
  • A shift in the microbiome to acidophilic and acidogenic bacteria
  • An imbalance of the oral flora due to the presence of fermentable dietary carbohydrates (correct)
  • A decrease in the concentration of soluble calcium and phosphate in the tooth

What is the primary difference between tertiary dentin and primary dentin?

  • The response to stimuli
  • The number of dentinal tubules
  • The degree of mineralization (correct)
  • The location in the tooth

What is the function of sclerotic dentin in response to caries?

<p>To block dentinal tubules (C)</p> Signup and view all the answers

What is the pH level below which organic acids can cause demineralization of enamel?

<p>5.5 (C)</p> Signup and view all the answers

What age group is more likely to have chronic caries?

<p>Older adults (B)</p> Signup and view all the answers

What is the process by which mineral can be added back to partially demineralized enamel?

<p>Remineralization (C)</p> Signup and view all the answers

What is the characteristic of an active carious lesion?

<p>Whitish or yellowish in color and opaque (A)</p> Signup and view all the answers

What is the characteristic of the lesion in chronic caries?

<p>It is hard and dark (D)</p> Signup and view all the answers

What is the result of severe demineralization in dentin?

<p>Denaturation and degradation of the collagen matrix (C)</p> Signup and view all the answers

What is the primary function of tertiary dentin?

<p>To respond to stimuli (C)</p> Signup and view all the answers

What is the characteristic of sclerotic dentin clinically?

<p>It is hard and dark in color (D)</p> Signup and view all the answers

What is the characteristic of an inactive carious lesion?

<p>Is brown or black in color and shiny or glossy (B)</p> Signup and view all the answers

What is the primary factor that modulates dental caries?

<p>Diet (A)</p> Signup and view all the answers

What is the primary difference between acute and chronic caries?

<p>The rate of progression (C)</p> Signup and view all the answers

What is the result of ongoing demineralization in enamel?

<p>Collapse of the surface and cavitation (D)</p> Signup and view all the answers

What is the characteristic of tertiary dentin in terms of dentinal tubules?

<p>It has irregular dentinal tubules (D)</p> Signup and view all the answers

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