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Front teeth gap can be treated orthodontically or cosmetically depending on the appearance of variety of dental problems. Some people wear teeth braces to let their teeth move together. Again your dentist
may recommend veneers, dental bonding and dental crowns to close teeth gap if he finds your lateral incisors too small. But if there is issue of missing teeth then you may require other dental repair procedures like dental implants, bridge or teeth bonding.
If the large labial frenum tissue is responsible for causing teeth gap, a surgery called frenectomy
is suggested to remove excess tissue.
Hope this helps you.
Wishing you good health...