Ключевые слова: alertness, allergy, alte, attention, bacteria, bacterium, bad, brush, brushing, brushing teeth, care, clean, cleaning, concept, concepts, danger, dental, dental equipment, dental health, dentist, dirty, discover, discovery, focus, focus concept, health, healthcare and medicine, healthy, healthy lifestyle, hygiene, ideas, infection, infectious disease, medical, medicines, microbes, mouth, oral, people, plastic, sanitation, teeth, tooth, toothbrush, unhygienic, used, virus, warning sign, wash, workers,