Oral-B iO Gentle Care - 4ct White

4000 FILAMENTS The Oral-B iO Gentle Care Refill Brush Head has 4000 filaments for a gentle and effective cleaning experience. ADAPTATION With a specially-designed overlay of concave and convex trim patterns, the Gentle Care Refill precisely adapts to the curvature of the tooth and gumline for your deepest and most thorough clean. INNER FIELD The inner bristle field contains gentle 5mil diameter bristles with a convex trim that adapts to the unique curvature of the tooth. OUTER TUFTS The outer bristle field contains even gentler 4.5 mm diameter bristles with a convex trim that adapts to the unique curvature of the tooth.