Show Professor Finds Formula That Kills Dental Pain NEW YORK Jan 22 UP UP AlI All the civilized world dentally speaking hailed Dr Elroy L. L Hartman Harlman Columbia university school of dental and oral surgery surgery surgery sur sur- gery professor proCessor as s Its long Jong looked for benefactor today He revealed the formula of t a chemical discovery discovery ery cry which makes th the dentists dentist's drill painless The substance was given to humanity free of patent incumbrances The announcement was made before dentists at a special meeting of or the dental societies of ot New York Although University Patents Inc controlled by Columbia un uni uni- uni i- i holds the basic baste patent on the substance known as a 8 desensitizer desensitizer de Dr Hartman said the tho university h had d decided not to tot t take ke th the patent up but to give it free to the world Hartman Haitman said the desensitizer contains three simple chemical ingredients Ingredients ether ether alcohol and The discoverer of ot the substance said saW that for 18 years he conducted conduct conduct- ed research on tho the the th theory y oz-y ry that the dentin the bonelike substance underlying tooth enamel was not capable of communicating sen sen- Two ro o y years ars ago he dl discovered covered a anew anew new substance in In- dentine Ho He subsequently llev developed loped the chemIcal chemical chemical chem chem- chem chem- ical which when applied to the dentin denU will destroy a a. tooth's capacity capacity capacity ca ca- ca- ca for pain for 20 minutes to toan toan toan an hour during which h time vir virtually any lany cavity ty may be prepared pre prepared prepared pre pre- pared for or filling I |