. Il cosmo dentale. E examination heldat Fort Logan, Colos. Dr. Squires è stato bornnear Atlantic, Cass County, Iowa, January17, 1887, e si è laureato alla uni-versity di Denver, Colos., con la classe di 1910. Frank Coleman Cady, D.D.S., Fredonia, Kans., ha superato l'esame tenuto a Jef-ferson Barracks, Mo. Dr. Cady è nato atFredonia, Kans., 9 settembre 1888, e si è laureato all'Università del Michigan, con classe tiie di 1910. John Howard Snapp, D.D.S., Columbus, Ohio, ha superato l'esame tenuto a Colum-bus Barracks, Ohio. Il Dott. Snapp è stato sopportato inWashington, Ohio, 19 febbraio 1899, AN

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. The Dental cosmos. e examination heldat Fort Logan, Colo. Dr. Squires was bornnear Atlantic, Cass county, Iowa, January17, 1887, and was graduated from the Uni-versity of Denver, Colo., with the class of1910. Frank Coleman Cady, D.D.S., Fredonia, Kans., passed the examination held at Jef-ferson Barracks, Mo. Dr. Cady was born atFredonia, Kans., September 9, 1888, and wasgraduated from the University of Michigan, with tiie class of 1910. John Howard Snapp, D.D.S., Columbus, Ohio, passed the examination held at Colum-bus Barracks, Ohio. Dr. Snapp was born inWashington, Ohio, February 19, 1899, andwas graduated from the Starling-Ohio Med-ical College, with the class of 1911.—Armyand Navy Journal. United States Patents PERTAINING OR APPIiICABX.E TO DENTISTRY ISSUED DURING MAY 1912. May 7. No. 1, 025, 751, to A. O. Kretzschmar. Tooth-brush. May 1). No. 1, 020.213, to Joseph Kohn. Artificialtooth and crown. May 28. No. 1, 027, 443, to Heinrich Schweitzer.Hinge articulator. No. 1, 028, 017, to Leo Greenbaum. Den-ture.. DR. GEORGE J. FRIEDRICHS. THE Dental Cosmos Vol. L1V. AUGUST 1912. No. 8. Original Communications. EVOLUTION OF OKTHODONTFA-KECENT DEVELOPMENTS. By EDWARD H. ANGLE, M.D., D.D.S., New London, Conn. (Read before the Alumni Society of the Angle School of Orthodontia, Sept. 13, 1911.) THE expansion arch, since its intro-duction in 1728 by the great Frenchdentist, Fauchard, has undergone anumber of modifications, some showingprogress, others showing merely differ-ences without progress, others markingsteps backward, and still others repre-senting mechanical absurdities. THE EXPANSION ARCH FROM ITS EARLYTO THE PRESENT FORM. The principle of the arch has not beenchanged, but its improvements have beentoward its refinement, so that in its pres-ent form better control of the distributionof force has been gained, not only for themovement of malposed teeth, but in se-curing stability of anchorage. The resulthas been to enormously increase its effi-ciency and to greatly lesse

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• bookcentury1900
• bookdecade1910
• booksubjectdentist
• bookyear1912