Buy toothbrushes with soft bristles. Medium and firm ones can damage teeth and gums. Use soft pressure, for 2 minutes, two times a day. Both powered and manual toothbrushes clean teeth well. Manual brushes with mixed bristle heights or angled bristles clean better than those with all flat, even bristles. Powered toothbrushes may be easier if you have trouble using your hands. Set a reminder to replace your toothbrush every 3-4 months. Toss it sooner if the bristles look bent or splayed out. Bent bristles don’t clean as well. (They’re also a sign you may be brushing too hard.)