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Questions and Answers
Which substance is responsible for the color change and precipitate when NaOCl and CHX are combined?
Which substance is responsible for the color change and precipitate when NaOCl and CHX are combined?
- EDTA
- methemoglobin
- tooth staining
- 4-chloroaniline (PCA) (correct)
What is the effect of increasing the concentration of NaOCl when 2% CHX is used?
What is the effect of increasing the concentration of NaOCl when 2% CHX is used?
- Increase in precipitate size (correct)
- Change in color but no precipitate formation
- Decrease in precipitate size
- No effect on precipitate size
What concern has been raised regarding the color change caused by the combination of NaOCl and CHX?
What concern has been raised regarding the color change caused by the combination of NaOCl and CHX?
- Tooth sensitivity
- Tooth decay
- Tooth staining (correct)
- Tooth discoloration
What is the potential consequence of the resulting precipitate interfering with the seal of the root canal obturation?
What is the potential consequence of the resulting precipitate interfering with the seal of the root canal obturation?
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What toxic effect has been associated with short-term exposure to 4-chloroaniline (PCA)?
What toxic effect has been associated with short-term exposure to 4-chloroaniline (PCA)?
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