A 25-year-old woman complains of an intense pain in her upper jaw. The pain increases when she eats hot food or drinks hot beverages, while cold liquid relieves the pain. Objectively, in tooth 24 there is a carious cavity filled with softened dentin. Probing of the cavity floor is sharply painful, percussion is positive. Electric pulp test - 50 microamperes. What method of treatment would be the most advisable"?