It depends upon where the gap is? If it is specifically to anteriors then you have to first get the etiology or cause diagnosed. Sometimes the gap is due to high frenum attachemnt. In that case you need to get the frenectomy.
Another option is to build the teeth usind tooth colored composite restorations to get the actual size of the teeth.
But if the gap is in all the teeth then you would be requiring an orthodontic appliance to close the gap. For more and detailed info you can read an article by clicking the link....
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