OptiShine Polishing Brushes x 3 Concave-shaped polishing brush. Efficient in practice: The concave shape of the brush is efficient on all tooth surfaces, as well as on less accessible surfaces like interproximal spaces and occlusal fissures. Universal use: Always produces excellent polishing results for all restorations due to the concave shape of the brush. Proven and efficient: Excellent polish for an optimum aesthetic appearance: The polishing effect is created by polishing particles embedded in the bristles (silicon carbide), so no paste is necessary. High gloss for all situations: Efficient gloss polish for restorations made of composite, compomer, resin-modified glass ionomer or ceramics, as well as for prophylactic treatment. Durable for multiple use: Autoclavable at 134°C for at least 3 minutes. No effect on the polishing performance.