Orthodontic gap closure, if possible, is the best option. The main drawback is time, as it is a relatively slow process.
Cosmetic addition to the tooth is sometimes indicated, with chair side direct composites or indirect veneers. These are artificial materials which have a limited life.
The best option, as suggested by other doctors, will be decided after thorough evaluation and discussion of your needs and budget.
Next Steps
Consult an Orthodontist and a cosmetic dentist
Health Tips
Do not go into elaborate artificial tooth crowns. Cutting natural teeth should be a absolute no no!