Linked from
The 5 pages that link to Interdental cleaning, each with the reason it gives.
Oral hygieneBroader topic: A toothbrush often misses plaque between closely spaced teeth.
GingivitisRelated: It reaches plaque-retaining areas that a toothbrush may not clean well.
Dental flossNarrower topic: Floss is one method within this broader form of oral hygiene.
ToothpickNarrower topic: Toothpicks are one simple tool for removing food trapped between teeth.