Gap Between Two Front Teeth?

Find a cosmetic dentist who will do a cosmetic wax-up try in to see how you would look with bonding.  Before you 'bond' your space closed make sure you like the color of your teeth.  Whiten now if you don't like the color because bonding just matches the color you have.  You can redo your bonding any time - eventually you might even do braces to redesign your smile or do veneers to upgrade.  Tooth colored bonding is perfect for you now!  Cost is  dependent on area and expertise.

Cosmetic Bonding is an excellent choice. Costs vary tremendously based on location as well as dentist's skill level.

Using bonding to close a gap between your two front teeth, especially at age 16 would be an excellent treatment.  Down the road you may eventually want to have veneers done as bonding tends to have a shorter longevity than veneers.  You may want to have a preview of how it is going to look before preceeding.  The dentist can place some bonding on the teeth to "mock up" how the final will look without actually bonding to the teeth.  The primary concern is that the teeth won't look too wide in relation to the rest of your teeth.  If your other teeth look too small in relation to the bonded ones, you may have to consider doing more than two teeth.  Costs very greatly between practices but an excellent cosmetic dentist would most likely begin minimally around 450 per tooth.