_. Peninsula Center of Cosmetic Dentistry is in need of a Registered Dental Assistant to cover Thursday, December 18th, 2025 from 7:45 AM - 5:00 PM. _. This is a 1 day assignment only. Qualifications: Must be a Registered Dental Assistant in the state of California. Our dental assistants. assist the doctor during treatment procedures. set up and break down operatories. take and process x rays. sterilize and maintain instruments. provide patients ...