What are some procedures (besides braces) a dentist might do to close a half tooth width gap between two teeth?

Gap in smile: Talk to your dr about doing a quick live mock up for you with composite to see if bonding could be an option for you!

see answer below: There are many cosmetic procedures available including porcelain crowns and laminates as well as tooth colored fillings called bonding.

many options: You can have bonding done, veneers, and/or braces-- ortho... If you do braces, you may want to ask about your frenum (maxillary anterior) you may need frenectomy and faithful wearing of retainers after ortho. Thin veneers and bonding are also good options, but your central incisors may look wide after gap closed.

Laminates or crowns: The dentist will place crowns (caps) on the two front teeth, making them slightly larger, thus closing the space. Another alternative would be laminates, which are thing porcelain facings. But why not try invisalign, which is orthodontic treatment without braces.

Depends...: Some correction can be done with a retainer if the roots are closer together than the teeth themselves. The teeth can be enlarged somewhat to make the space smaller.

Restorations: To close space teeth must be moved into position, or prepared and restored, or both. A half-tooth wide space is significant, and restoring the adjacent teeth may make them look too wide. Talk to both your dentist and an orthodontist about what would be the best treatment plan for your individual problem. Know that all restorations require periodic repair or replacement.

Closing large space: If the space is truly a "half tooth" wide, you would probably be better off either leaving it alone or having conventional orthodontics to close the space. Using large bonded fillings, laminates or crowns in these cases, while possible, create other problems aesthetically as well as functionally (more prone to cavities, gum problems, occlusal forces, maintenance, etc). Rethink ortho option.

Depends: on how big the space is. If the space is a "half tooth" wide, then using large bonded fillings, laminates or crowns will have their own problems (cavities, gum issues, occlusal forces, maintenance). I would likely reconsider orthodontics