How to Become a Dental Hygienist in District of ColumbiaLicense Requirements & Costs (2026)

Program Details

Notes

DC dental hygienists can obtain Board authorization for local anesthesia and nitrous oxide, but both require direct supervision of a dentist. As of recent board data, 84 hygienists hold local anesthesia and nitrous oxide authorization, and 2 hold nitrous oxide only authorization. The Board limits the ratio of supervised hygienists: no less than 2 hygienists per 1 dentist (this limit does not apply to government employees).

Notes

DC requires dentist supervision. Board advises the Mayor on limiting the number of hygienists supervised by one dentist, with a minimum ratio of 2 hygienists to 1 dentist. This ratio limitation does not apply to government employees (DC or federal). Local anesthesia and nitrous oxide require direct supervision. DC is NOT a direct access jurisdiction.

CE Topics

Regulatory Board

Dental hygienist licenses must be renewed on schedule. Most states require continuing education covering infection control, CPR/BLS, ethics, and clinical topics relevant to dental hygiene practice.

Additional Requirements for Transfer

• •NBDHE passage
• •CDCA examination results
• •DC Written Take-Home Law Examination
• •Three character references (persons who have known applicant at least 1 year)
• •Moral Character Reference Form
• •Criminal background check
• •Official certificate of graduation

Dental hygienist license reciprocity varies by state. Many states offer licensure by credentials or endorsement for hygienists with active licenses in other states, though additional exams or documentation may be required.