Did mean that Ur gums are going down? It can be due to Many reasons,lik vigerous tooth brushing habits or cn be evn bone loss which can even lead up to shaking of Ur teeth.since the information given is very limited u shd kindly meet Ur doctor,so that he cn clinically see ur case and suggest the treatment... braces cn help to fix malaligned teeth, these issues are the problems of the gums and the bone so for this u need to meet a gum specialist (periodontist)

Wat makes U feel that Ur roots are exposed , If they are its signs of Gum Disease

It is difficult to provide you with the rational suggestion based only on the description that you have given. Either consult a dentist for proper clinical evaluation, or you can post a clinical picture of the affected areas on Practo for an online consultation with a specialist. Regards.