optimize brushing

1. Choose a toothbrush soft feather brush
2. Replace your toothbrush when the hair brush is already blooming
3. Brush teeth at least 2x a day
4. Brush teeth properly:
- Teeth in the lower part, brushed from the bottom upwards
- Teeth in the upper part, brushed from the top down
- The duration of tooth brushing 2 minutes for all parts of the affordable