1859A.D Organization of American dental Associatiorona representative basis D
1859 A.D. Organization of American Dental Association on a representative basis
1890 W.D. Miller propose a chemical-bacteria Paraorganism theory to explain the mechanism of caries
1890 W.D. Miller propose a chemical-bacteria Paraorganism theory to explain the mechanism of caries
1891AD EXtension for prevention and scientific cavity preparation promulgated by G.v. Black. 1892 AD The establishment of a three-year course in dental colleges G. BLACE. D. D.s. M.D. L.L.D. S:D. s35.1:5
1891 A.D. Extension for prevention and scientific cavity preparation promulgated by G.V. Black. 1892 A.D. The establishment of a three-year course in dental colleges
1906AD Einhorn recommends novacaine and adrenalin combination for local anesthesia
1906 A.D. Einhorn recommends novacaine and adrenalin combination for local anesthesia
1915AD McKay and Black publish results of nvestigation of fluoride in drinking water
1915 A.D. McKay and Black publish results of investigation of fluoride in drinking water