Am I eligible to pursue BDS course after completion of Dental Hygienist two year certificate course???

Yes, you can pursue BDS after Dental Hygienist two year certificate course as minimum eligibility required to pursue this course is 10+2

Bachelor of Dental Surgery Eligibility
-Dental School Requirements include H.S.C. (10+2) with English, Physics, Chemistry and Biology with at least 50% marks.
-Admission to graduate courses in dentistry is through a general, nationwide competitive examination.
- You should be above 17 years at the time of admission.

Top Ranked BDS Colleges of India:

Maulana Azad Institute of Dental Sciences Delhi
Manipal College of Dental Sciences Manipal
Bapuji Dental College & Hospital Davangere
SDM College of Dental Sciences & Hospital Dharwad
Govt. Dental College & Hospital Mumbai
Tamilnadu Govt. Dental College Chennai
Bharati Vidyapeeth Dental College & Hospital Pune
SRM Dental College Chennai
Dr. R. Ahmed Dental College and Hospital Kolkata
Saraswati Dental College Lucknow