The phrase "between teeth" can be described using a variety of synonyms. Some popular options include "interdental," "interproximal," and "interstitial." These words all refer to the spaces between teeth, which can be vulnerable to bacterial buildup and plaque accumulation if not properly cared for. Other related phrases include "dental crevice," "tooth gap," and "tooth interstice." No matter how you choose to refer to the areas between your teeth, it's important to stay on top of your oral hygiene habits, including regular brushing, flossing, and rinsing with mouthwash to keep your smile healthy.