First you have to understand that there are some natural space between out tooth
which can not be filled as they are cleanse area nd 2nd thing if there are more than
normal space so the treatment depends, where is this space between like front tooth region or back
tooth apart from spacing is everything normal or not.
In case of only spacing in front tooth you can go for veeners but if there are other other type of mal occlusion then you need braces.