How should a dental hygienist handle the mechanical polishing of teeth?

The correct approach for a dental hygienist regarding the mechanical polishing of teeth is to perform this task only after thorough scaling has been completed. Scaling is essential to remove plaque, tartar, and debris from the teeth surfaces, which prepares the enamel for effective polishing. If polishing were to occur before scaling, it could inadvertently polish over calculus and debris, potentially causing a smoother surface that harbors bacteria contributing to gum disease and cavities.

By first completing the scaling procedure, the hygienist ensures that the teeth are clean and free of any trapped substances, thus allowing the polishing process to enhance the appearance of the teeth and possibly protect them. This sequence not only promotes better oral health outcomes but also aligns with standard dental practices and protocols.

Other options suggest procedures that either do not relate directly to the efficacy of polishing or may not be necessary steps in the context of polishing teeth. For example, administering anesthesia might be applicable in certain situations but is not a prerequisite for polishing. Taking patient history, while important for overall care, does not specifically influence the mechanical polishing process itself. Similarly, applying fluoride treatment is a beneficial practice but should follow polishing, not precede it in the treatment sequence.