Hello Himasnhu !!

Yes, there are certain specified  health problems , diagnosed with which a candidate can be disallowed admission in medical college even under disability quoata .

As of now MCI has considered 21 such conditions including dyslexia , multiple sclerosis , equal to or more than 40% blindness , and the list continues.

But there are no such stops for candidates with dental problems . So, don't worry .

All the best.

Hope this helps .