One of the first oral health care tip is to brush your teeth at least twice a day. One of those times should be just before you go to bed. When you sleep, your mouth gets drier. This makes it easier for acids from bacteria to attack your teeth. Then when you wake you will want to brush your teeth after breakfast. That way, bits of food are removed. But if you eat in your car or at work, or skip breakfast, brush first thing in the morning. This will get rid of the plaque that built up overnight.