If you'd like to prevent periodontal disease, it is crucial that you remember to brush at least twice a day.
 
You know that your dentist will always tell you to brush twice a day, preferably after every meal.

But what you may not know is that dentists say three-quarters of all adults over 35 have some sort of periodontal disease, and that weakens your gums and can make your teeth fall out.

Hopefully, that is motivation to remember that number -- two -- and faithfully brush at least twice a day.