Professional Ethics, Scope of Practice, and Patient Safety
What this domain tests
Delegation limits under the state dental practice act, informed consent and privacy, OSHA and radiation safety obligations, and the everyday ethical decisions that are easy to get wrong under time pressure.
Scope of practice
The orthodontic assistant works under the supervision of the treating dentist, and the state dental practice act defines exactly which functions may be delegated and at what supervision level. Radiographs, coronal polishing, sealants, and impression-taking may require certification. Assisting never includes diagnosing, treatment planning, prescribing, or independently adjusting appliances. If a patient asks what treatment they need, the answer is a referral to the orthodontist, plus a general explanation of process.
Consent, privacy, and records
- Informed consent for a minor comes from the parent or guardian, with the child's assent.
- Document informed refusal when a patient declines recommended care.
- HIPAA requires minimum necessary use and a signed authorization for release of records; verify who is legally entitled to the record before releasing anything to a step-parent or grandparent.
- No patient photos on personal phones or social media without written permission.
- Retain records per state law, commonly seven years past the age of majority.
Safety obligations
- OSHA bloodborne pathogens standard: written exposure control plan, hepatitis B vaccination offered, post-exposure evaluation, PPE, sharps handling.
- Hazard communication with safety data sheets for every chemical in the operatory.
- Radiation safety: ALARA, lead apron and thyroid collar, no unnecessary retakes.
- Antibiotic prophylaxis is reserved for specific cardiac conditions under current guidance - not for routine orthodontic procedures or prosthetic joints.
- Update the medical history at every visit: bisphosphonates, bleeding disorders, pregnancy, uncontrolled hypertension, and latex allergy all change what you do.
Worked example
A parent asks the assistant, "Just tell me whether my daughter needs four premolars out and what it will cost." Reasoning: extraction decisions and fees are outside the assistant's scope. Acknowledge the question, explain that the orthodontist will review the records and treatment options at the consultation, and offer to schedule that discussion. Do not offer a clinical opinion, even informally.
Traps that cost marks
Posting before-and-after photos without consent; giving clinical advice by phone without documenting it; releasing records to a family member without authorization; assuming a patient's verbal "okay" covers a records release; and skipping the medical history update because the patient "looks fine."