Which of the following procedures requires certification for a Registered Dental Assistant (RDA)?

The procedure that requires certification for a Registered Dental Assistant (RDA) is coronal polishing. This task involves the removal of plaque and stains from the coronal surfaces of the teeth using a polishing agent and a handpiece. Because coronal polishing is considered an expanded function that can directly affect the level of patient care, it requires specific training and certification.

The California Dental Board mandates that RDAs complete a course in coronal polishing and obtain the appropriate certification before performing this procedure. This ensures that the RDA possesses the necessary knowledge and skills to perform coronal polishing safely and effectively.

In contrast, the other options—basic dental charting, patient education, and oral hygiene instruction—do not require such certification for an RDA. These tasks fall under the general duties of an RDA and do not involve the same level of technical expertise needed for coronal polishing. While they are important for comprehensive patient care, they can be performed without specialized training or certification.