Ключевые слова: age, aged, artificial, beauty, bow, bridge, care, chalk, chromium, crown, dental, dentist, dentistry, denture, detail, elderly, equipment, female, flexible, hand, health, healthy, lithium, lower, mature, medical, medicine, metal, model, mouth, nylon, old, oral, partial, particularly, pensioner, people, person, plant, plastic, porcelain, prosthesis, prosthetic, removable, retired, retirement, senior, teeth, tooth, woman,