Ключевые слова: adults, assistant, caucasian, clinic, dental, dentist, dentistry, doctor, equipment, examining, expertise, female, girl, health, healthcare, holding, hygiene, hygienist, indoors, instrument, interior, male, man, mask, medical, medicine, occupation, oral, orthodontic, orthodontist, patient, people, person, profession, professional, proficiency, sitting, skill, standing, tool, treatment, ultraviolet, uniform, vertical, woman, work,