Hello,
Type of procedure best suited for you depends on amount of gap between teeth.
A) 1-3 mm gap can be closed by putting Composite on each tooth in middle ( 1200-1600/-). In our practice we see that composites usually last average 5-8 yrs. After that they discolor. Best Alternative is Emax veneers if correctly planned and done by a cap specialist using good quality material, patients don't feel problem for 10-15 yrs.
B) If gap is 5 mm or more, and teeth are already big in side and drifted apart from each other, better would be to plan for alignment using braces/ aligners.
Next Steps
visit a nearby dentist, preferably a cosmetic dentist- prosthodontist or braces specialist - orthodontist to find out what works best in your case for long term success.
Health Tips
You can search about the articles online to find treatment options for GAP IN TEETH .
Good luck