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The Moderate User (Around 300 puffs per day): This represents an average user who takes regular breaks but does not vape continuously

Intrinsic stains, which are deeper discolorations within the tooth structure, are more challenging to treat and may require more intensive whitening methods

This matrix highlights the models accuracy in making correct predictions and also identifies areas where errors occurred, which can be crucial for further improvement of the model

The FDA defends the lengthy review process, citing its mandate to study the potential impact of new or modified products on the population as a whole