Hello sir,
First find out the reason for diastema,
1. If it is due to frenal attachment, then it should be removed and diastema can be closed by braces.
2. If it is very severe go for braces
3. If it is mild then you have following options
- composites filling
- veneers or laminates
- Crowns ( Zirconia types)
Next Steps
please visit a dentist before you decide, they might explain the above options in detail
Health Tips
If it is not awkward, you can leave it as such .