Ключевые слова: background, bacteria, bad, breath, care, cavity, clean, cleaner, color, copy, dental, dentist, dentistry, equipment, green, health, healthy, hygiene, hygienic, medicine, morning, mouth, new, nobody, object, one, oral, periodontal, personal, plastic, prevention, protection, remove, scrape, scraper, single, space, teeth, text, tongue, tool, tooth, top, view, yellow,