A 40-year-old female patient has made an appointment with a dentist. She complains of pain in her front teeth of the upper and lower jaws, which is caused by thermal, chemical and mechanical stimuli. Temporomandibular joint is also slightly painful. Objectively: the patient has deep occlusion; the enamel of lingual surface of the front upper teeth and vestbular surface of the front lower teeth is rubbed off exposing the glossy pigmented dentin. What is the most probable diagnosis?