I dont feel any pressure when i chewing gum instead i do bitin the teeth hard can this causr any problem i heard that biting the teeth causes teeth to become smaller whic is bad for the face overall thats what i heard is it true ?
Do not clench your teeth. And yes, that is a bad thing to do. If you don't feel pressure chewing gum get harder gum (mastiha, falim), maintain the bolus, flattened gum is easier to chew.