<human>:  What are some tips for brushing teeth properly?
<bot>: 
1. Make sure to brush twice a day, at least two minutes each time.
2. Use a soft-bristled toothbrush and toothpaste with fluoride.
3. Angle your toothbrush 45 degrees towards your gums and brush in gentle, circular motions.
4. Don’t forget to brush the tongue and the roof of your mouth.
5. Change your toothbrush regularly, every three months at minimum.