File:Transactions of the odontological society of Great Britain (1868) (14595311167).jpg

Identifier: transactionsofod25lond (find matches)
Title: Transactions of the odontological society of Great Britain
Year: 1868 (1860s)
Authors:
Subjects: Dentistry
Publisher: London : Wyman and Sons
Contributing Library: Dentistry - University of Toronto
Digitizing Sponsor: University of Toronto

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the care of the physician in chargeof the Electrical Department. Dr. Wynters notes were as follows :—Aspect of patientis suggestive of congenital syphilis; lower lip everted, anddribbling present; right side of soft palate paralysed so thatair and fluids escape by the nose. There is clumsiness ofmovement of right arm and leg, and knee jerk on thisside is exaggerated. Pupils act to light, but are unequal.I Palate re-acts to fourteen cells ; Faradic contractibility ab- 142 CASUAL COMMUNICATIONS. sent. Patient is the youngest of three, and one of twins.The condition is probably due to thrombosis of a cerebralvessel with hemiplegia during childhood. Mr. Hern next showed and described a set of instrumentsfor preparing roots for pivots. He did not claim originahtyfor them ; they were merely modifications of pre-existingforms. They all knew how important it was, in preparingroots for pivots, to cut the anterior surface of the rootsufficiently under the gum margin without injuring it; many
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a) Alveolus and Gum. (b) Boot. (c) Gilberts Gutta Percha. (d) Pin and Root-tray. (e) Godiva. (f) Pewter Tray, instruments had been used for this purpose—files, corundumdiscs, &c.—but they all produced a certain amount of irrita-tion and wounded the gum margin ; these instruments cutthe root well under the gum without injury, as they cut onthe flat surface only, the periphery being smooth. Theywere made in sizes to correspond to the diameter of theroot they had to cut, and not only cut under the gummargin, but left the root such a shape that an artificial CASUAL COMMUNICATIONS. 143 tooth may be easily fitted to it. Mr. Hern further ex-hibited an appUance for taking a good model of the rootafter it was cut. It consisted of a small copper shieldabout the diameter of the root, soldered to a guide pin.When the root is properly shaped and fully prepared hetakes one of the shields or root trays and bends it to theangle of the root, and then puts some softened gutta perchaon to the up

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