What are interproximal caries?

Cavities. Interproximal are cavities between the teeth. These are usually caused by lack of flossing.
Between teeth! These are cavities BETWEEN your teeth! I tell all my patients: before bedtime, after they brush their teeth (before they rinse their mouth) to FLOSS IMMEDIATELY! Then rinse with water and go to sleep. This should prevent further development of Interproximal caries!!!!
Decay between teeth. Interproximal caries is the tooth decay that happens inbetween teeth.