Hi
Diastema closure can be done through various options.
One is to go for filling and fill up the space , second is to go for caps or veneers, incase the the space is more between the teeth then fillings or crown will increase your tooth size and will look unaesthetic,hence you might need to opt for braces. There also various types of braces that u can choose depending on your budget
Next Steps
please visit your dentist