Dental Assistant Level 2 Upgrade Certificate Email to a Friend We are currently reviewing our Dental Assistant Level 2 Upgrade Certificate to make sure it continues to meet student and industry needs. Check back soon for the newly revised version. If you are already in the process of completing courses for this certificate or if you have any questions, contact the Continuing Education Community & Health Services department at 416-415-5000, ext. 2126, or at email@example.com. Interested in dental health? Check out our Dental Health subjects.