A 65-year-old male patient complains of crepitation and clicking in both temporomandibular joints, pain induced by displacement of the lower jaw to the right, ear noise, dry mouth, glossalgia. He has been using complete removable prosthesis of the lower jaw for 6 months. The patient denies having rheumatosis. Objectively: the lower third of face is shortened, mental fold is strongly pronounced, mouth corners are lowered, there are angular fissures and cracks. Palpation reveals crepitatnt rale observed during TMJ moving. What is the most likely diagnosis?