i think as long as you eat healthy,and dont have lot of sugary food and drinks.
and you clean your teeth ,twice a day properly so cut out sweets chocolate,well,moderation as you should have a treat here and there
but some people who dont eat lot of sugary food yet still have problems
but it would help though
weak teeth can also become weak if you lack calcium ,so drink plenty of milk
hiow about the idea of pulling string will biting down...does that strengthen teeth? i mean biting something and pulling on it...
well dentsits swear by flossing with string,but i dont like using floss ,as i think it can cut your gums and make things worse ,i used inbetween brushes
they go inbetween your teeth and on bottom of your gums does the same job and i think they are more better for your teeth and gums