One way to prevent the spread of germs by staff during an oral hygiene session is:

Wearing disposable gloves is a key practice in maintaining hygiene during an oral hygiene session. The primary reason for using gloves is to create a barrier that prevents the transfer of germs and bacteria between the staff and the individual receiving care. This is especially important in a setting where direct contact with bodily fluids, such as saliva, may occur. Gloves protect both the caregiver and the individual, significantly reducing the potential for cross-contamination and the spread of infections.

While other options like using dental floss, fluoride rinse, and rinsing after brushing are certainly important components of good oral hygiene, they do not specifically address the prevention of germ transmission during the interaction. Instead, the use of gloves directly contributes to a safer and more sanitary environment, ensuring that the practice of oral hygiene does not inadvertently lead to the spread of harmful pathogens.