Hygienist (noun)

1. A person trained in the promotion and maintenance of health, especially in relation to cleanliness and sanitation.
2. A professional who specializes in oral hygiene and is responsible for cleaning teeth and providing education on oral care.

Origin:

Late 19th century: from french hygiéniste, from hygiène "hygiene".

Examples:

1. The hygienist cleaned my teeth and provided tips on how to maintain good oral hygiene.
2. Hygienists are trained to remove plaque, tartar and stains from the teeth.
3. Hygienist provide oral cancer screenings and periodontal charting.
4. Hygienist may work in dental office, hospitals or public health organizations.
5. Hygienist may also provide education on diet, smoking and oral hygiene practices.