The Oral-B Pro-Expert 35 Medium toothbrush removes surface stains from teeth and up to 90% of plaque in hard-to-reach areas. The CrissCross bristles angled at 16 degrees ensure effective plaque removal, while also promoting healthier and stronger gums. Thanks to the fine bristles, the toothbrush is gentle on the gums and also effectively removes bacteria from the tongue for fresh breath.