For optimal cleaning tilt the brush at a 45-degree angle, half on the tooth, half on the gum. Move in small, gentle circles almost without any pressure. With the CS Smart the CUREN Filaments are tightly packed together on a small brush head giving greater accuracy. CUREN Filaments are firm enough to penetrate deep into the sulcus, fissures and between teeth. 7600 Ultra Fine, Soft, Textured CUREN Filaments for a gentle, efficient cleaning action on both teeth and gums. Curaprox Toothbrush CS Smart Trio Pack - 3 x Soft Small Head Toothbrush for adults.