Ключевые слова: ache, age, ageing, artificial, braces, bridge, care, chew, crown, dental, dentist, dentistry, denture, dentures, education, grandfather, grandma, grandmother, grandpa, gum, health, hygiene, jaw, laboratory, medicine, metal, mouth, new, old, oral, patient, plastic, precision, professional, prosthesis, replace, replacement, retirement, senior, substitute, teeth, tooth,