Hi sir...   There are so many ways for the management of gaps between teeth.. It depends on gaps between the teeth..... If the gap is less than 2 mm, then  you can go for esthetics fillings like porcelain veneers, composite filling, lumineers... If the gap is more than  2 mm then orthodontic management should be done... It depends on type of braces material.. Metal braces: Rs.25,000 Ceramic braces: Rs.50,000... Lingual braces:Rs.1,50,000

Dental Bonding. Dental bonding is the easiest, quickest, and most economical way to fix the gap between your teeth. ...Veneers. Porcelain veneers are another cosmetic procedure that can fix the gaps in between your front teeth. ...Orthodontics. For more severe cases of diastema, we may need to refer you to an orthodontist. Cost varies from 26000-for metal, 36000-for ceramic but it all varies on clinical examination.

At your age it is advisable to opt for braces to close the gap. Cost depends on the Clinic and the type of braces you select. Can be from 35000-95000. Treatment takes 12-16 months to be completely normally