Age is a factor here for doing a successful orthodontic treatment. Before that you need an assessment of status of your gum and bone condition.

Hello, Lingual braces may cost around 1.5 Lacs-2 Lacs.Consult an orthodontist.

First it has to be checked whether the tooth movement is due to Ortho or a gum issue. If braces are required then you have to do the entire treatment for a year to a year and a half. You can opt for ceramic braces which would be approximately 85000- 1 lac for the entire treatment. Invisalign may also be an option but cost can be 2 lacs and above