Ключевые слова: adult, background, beautiful, braces, brush, care, caucasian, childhood, clean, cleaning, closeup, dental, dentist, dentistry, equipment, expression, face, female, girl, happy, health, healthy, human, hygiene, lips, medical, metal, mouth, orthodontic, people, person, smile, teen, teenager, teeth, toothbrush, treatment, woman, young, youth,