Hello aspirant!!
Almost 90-95% private dental colleges do not have specific uniform for the students.However,the students should compulsory wear aprons or clinical coats.

The suggested attire for the students are as :
1. Trousers are preferred attire.
2. Dental should avoid wearing loose clothes as there are chances of these clothes getting caught in machinery.
3. Students should wear clinical coats or aprons and ensure that all buttons are closed. They should also wear masks  .

Hope it helps :)