What is one use of disclosing agents prior to a prophylaxis?

Disclosing agents are used in dental practice primarily to provide a visual indication of plaque. These agents contain dyes that adhere to plaque, which allows both the dental professional and the patient to see areas where plaque accumulates on the teeth. By highlighting these areas, the disclosing agent helps in identifying spots that require more thorough cleaning during prophylaxis. This visual feedback is crucial for effective oral hygiene education and encourages patients to improve their brushing and flossing techniques in those areas.

The use of disclosing agents is particularly valuable as it not only enhances the effectiveness of the prophylaxis treatment but also assists in teaching patients about their oral hygiene practices. It creates an interactive experience that can motivate patients to maintain better dental care habits outside of the dental office.

The other choices do not accurately reflect the primary function of disclosing agents. Measuring the distance between gums and teeth, establishing a baseline for whitening, and aiding in cavity detection are not purposes served by disclosing agents. Instead, those tasks typically involve other instruments or methods in clinical dental practice.