Ace the California RDA Written Exam 2025 – Drill, Fill, and Thrill Your Way to Success!

It is important for the provider to review the patient's medical history before placing a dental dam as it allows them to identify any potential risks or contraindications that may affect the procedure. Option B, preparing dental instruments, should only be done after the dental dam has been placed. Option C, applying topical anesthetic, is not necessary prior to placing a dental dam. And option D, explaining the procedure to the patient, should be done after the dental dam has been placed as to not interfere with the procedure. Therefore, reviewing the medical history is the most important step prior to placing a dental dam on a patient.