The areas of the tooth where dental floss is likely to miss plaque biofilm are:

Question

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Dental floss is designed to remove plaque from the proximal surfaces of teeth, which are areas that are difficult to clean with a toothbrush alone. However, floss may not effectively reach into furcations (where the roots of multi-rooted teeth divide) and root concavities (depressions in the root surface), as these areas require more specialized cleaning tools and techniques for thorough plaque removal.

The Areas of the Tooth Where Dental Floss Is Likely