You don’t need to brush all your teeth… only the ones you want to keep.
You may be interested in reading our free e-book I hate brushing my teeth! for a gentle introduction to this health and hygiene topic.
“Human teeth are small, calcified, hard, whitish structures found in the mouth […] Humans […] develop two sets of teeth, ” (en.wikipedia.org, Human tooth).
Brush your teeth after every meal, at least two times a day.
Visit the dentist at least twice a year.
Avoid alcohol, tobacco, snacks, sugary foods, and fizzy drinks at all cost.
Don’t pierce your lips or any part of your mouth. Many say that piercings is a way to express yourself as an individual, to be cool, attractive, etc., but it can be dangerous.
Your mouth contains millions of bacteria. When you get a piercing, you essentially have an open wound. It can lead to infection and swelling.
Bibliography: Colgate Kids