A patient presents with a history of HIV. When treating the patient with HIV, it is imperative that

you refer them to another office.
you get clearance from their medical doctor before moving forward with dental treatment.
you sterilize all instruments twice.
b and c.

you get clearance from their medical doctor before moving forward with dental treatment.

Rationale: you get a clearance from their medical doctor before moving forward with dental treatment – Patients with HIV are susceptible to illness and exposure much more readily than someone who is not infected with the virus. Their immune system is delicate, and care must be taken when treating them in the dental office. A medical clearance is mandatory.