What can i do to get strong enough teeth so they never fell off or break?

You should...: Brush your teeth often and certainly after meals, floss regularly, avoid candies and gummy foods that stick in your teeth. Eat healthy, and make regular routine dental appointments.

Good bite: Besides good oral hygiene, flouride tx from your dentist, and use of mouthguard if there's some form of parafunctional habit can help preserve the integrity of dentition.