[150th Anniversary of general anaesthesia, applied in dental extraction]

Pain and idiomatic expressions referred to this subjet by all-time great figures are here related. The author also describes procedures to fight the pain off which had been used since antiquity; the disputable circumstances that originated opposite opinions about the primacy in applied anaesthesia. And these are the writings of Dr. Menczer vindicating Horacio Wells as the pioneer in discovering and using anaesthesia for surgical treatments.