Ключевые слова: age, back, boy, cavity, child, childhood, class, classroom, cropped, day, dentistry, education, elementary, front, fun, funny, growth, happy, health, home, indoors, joy, kid, learn, learner, lesson, little, male, man, milk, mouth, preteen, primary, pupil, school, schoolboy, september, shirt, small, smile, son, stomatology, student, study, teeth, toothless, toothy, treatment, uniform, young,