Dear Shrinidhi,

Below are some of the medical colleges for dentistry in Tamil Nadu are-

• SRM University, Ramapuram Campus.
• Annamalai University, Annamalai Nagar.
• Sri Ramachandra University, Chennai.
• MGR Educational and Research Institute, Chennai.
• SRM Dental College, Ramapuram.
• Tamil Nadu Dreams MGR Medical University, Chennai.

Regards

Hi Shrinidhi below are some good colleges you need 

Tamil nadu government dental college and hospital

Saveetha Dental college and hospital 

SRM Dental college 

Ragas Dental college and hospital

Vinayka mission university

Sri Ramchandra University

Annamalai University

All of tye above mentioned colleges has good reviews .

I hope it will help.

Thanks.