If the decay or trauma is confined to the crown of the tooth, a pulpotomy may be recommended. When a cavity gets really deep, close to the pulp of a tooth, or even into the pulp, the pulpal tissue becomes irritated and inflamed. A pulpotomy is when the inflamed pulp chamber, usually on a baby molar, is removed. The dentist will remove all the infected material in the pulp of the crown only, leaving the living tooth root intact. After a pulpotomy on a baby molar, the empty space will be filled with dental cement and a stainless steel crown will be placed to restore the tooth.