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The two following quotations are from the discussion on a paper by the present author, entitled "What a Dentist saw in Examining 500 Crania," read before the Mississippi Valley Dental Association, April 18, 1895.
Dr. J. E. Cravens; "I believe that if the Doctor had examined the skulls in the living subjects he would have found his proposition a mistake. I believe that nature never pushed the apex of a tooth root into the Highmorian cavity, without a bony protection, however thin. She never completed the apex of the root of a tooth in the mucous membrane alone."
Dr. H. A. Smith: "I doubt very much the entire absence of bone. If the position taken by Dr. Fletcher is true it may account for certain lesions, phases of facial neuralgia. I doubt very much if the root of a tooth ever penetrates the antrum. You must have a thin covering
FLETCHER MH. A DISCUSSION ON ANATOMY OF THE ANTRUM OF HIGHMORE.. JAMA. 1897;XXVIII(1):18–19. doi:10.1001/jama.1897.02440010018001f