Dental floss is used to:
**Core Concept**
The use of dental floss is a crucial aspect of oral hygiene, aimed at removing interdental plaque, preventing gingivitis, and promoting periodontal health. Effective plaque removal is essential to prevent the accumulation of bacteria that can lead to periodontal disease.
**Why the Correct Answer is Right**
Dental floss is used to remove plaque and food particles from between teeth and under the gumline, where a toothbrush cannot reach. This is achieved through the mechanical action of floss, which dislodges and removes the accumulated plaque, thereby preventing the progression of gingivitis and periodontitis. The regular use of dental floss is recommended as part of a comprehensive oral hygiene routine.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because dental floss is not used to clean the tongue, which can be cleaned using a tongue scraper or a toothbrush.
**Option B:** This option is incorrect because dental floss is not used to whiten teeth, which can be achieved through professional teeth whitening or at-home whitening products.
**Option C:** This option is incorrect because dental floss is not used to remove tartar, which requires a professional dental cleaning.
**Clinical Pearl / High-Yield Fact**
It is essential to use a new section of floss for each tooth to prevent the re-depositing of bacteria and plaque from one tooth to another.
**Correct Answer: D. To remove plaque and food particles from between teeth and under the gumline.**