Ключевые слова: age, background, boy, care, change, cheek, child, childhood, dentist, dentistry, development, emotions, expressions, fairy, finger, first, flashes, free, front, funny, gap, gray, grin, growth, hard, head, health, hole, hygiene, innocence, joy, laughter, lips, loss, lost, male, medicine, missing, mouth, open, oral, schoolboy, smile, tooth, toothless, wide, young, youth,