Final answer:
The dental hygienist is following the principle of beneficence by participating in community-based oral health programs to benefit others.
Step-by-step explanation:
If a dental hygienist is actively participating in community-based oral health programs, this can be seen as an application of the principle of beneficence. The principle of beneficence is a commitment to acting in ways that benefit others and contribute to their well-being. By voluntarily providing health education and services within the community, a dental hygienist is working toward improving public health outcomes through preventive care, education, and treatments that are aimed at advancing the good of the community.