Complete the Nitrous Oxide/O2 Analgesia expanded functions module for dental assistants. You will receive instructor-facilitated, 8-week online instruction with a registered hygienist. Your supervising dentist may provide initial skills training and on-the-job, clinical experience. Your final competency evaluation must be with a different dentist within your office or at another practice. Computer access with high-speed internet is essential to take this Expanded Function's module.