Ключевые слова: after, background, bathroom, before, blue, bristle, brush, care, change, clean, clear, close, color, comparison, cup, dental, dentist, dirty, equipment, fresh, green, health, healthcare, healthy, hygiene, lifestyle, medicine, new, nobody, old, oral, plastic, replace, rough, sanitary, shower, stand, standing, tap, tooth, toothbrush, two, unhealthy, up, used, vertical, wash, worn, yellow,