Ключевые слова: bad ingestion, bending, canines, cheeks, dental, dentistry, dentition, diagnosis, disease, doctor, enamel, expander, fluoride, fluorosis, health, hypomineralization of tooth enamel, incisors, jaw, lips, medicine, membrane, metabolism, molars, mottled enamel, mouth, mucous, pathology, people, premolars, set of teeth, smile, spots, teeth, tongue, treatment, unhealthy skin, white, young girl,