Instruments, appliances, etc. for crown-, bridge- and metal work : Hollingsworth system of crown- and bridge-work. Various methods of setting Logan crowns / S.S. White Dental Manufacturing Co.

  • S.S. White Dental Manufacturing Company.
Date:
1911
Catalogue details

Licence: In copyright

Credit: Instruments, appliances, etc. for crown-, bridge- and metal work : Hollingsworth system of crown- and bridge-work. Various methods of setting Logan crowns / S.S. White Dental Manufacturing Co. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    IMPRESSION TRAYS—(Continued) PIER CROWN Nos. 41 and 42 Devised by De. C. P. Wilson )esigned to produce accurate impressions of single teeth which are to serve as piers for dental Jidges and plates, or for regulating attachments. There are two sizes, which have been numbered Ispectively 41 and 42. The illustration shows the exact size of Tray No. 41. The Tray No. 42 is ie-sixteenth inch larger. The device consists of a tray B, made in two parts, 6, 6, and a holder A, which telescopes over the ray, attached to a handle B. In use the two parts, b, b, are to be placed in the holder so that the 'tividing line of the tray may be mesio-distal when the handle is turned to a convenient angle for taking the impression; thick mixed plaster is then placed in the tray and pressed over the tooth. /hen the plaster has hardened, the holder is slipped off and the tray left on the tooth, then a thin Iknife or excavator is forced between the parts of the tray near its contact with the gum. This ef- fects a lateral separation of the two parts of the tray, and a fracture of the plaster which will allow the parts to be readily rejoined and replaced in the holder, forming a complete impression from which a perfect plaster model, or several of them, may be made. Price No. 41, small 42, large $0.40 .40 PLATE FILES (Grobet) 3 in. 3i in. 4 in. ii in. 5 in. 6 in. Half-round, Bastard, No. 0 Cut per doz. $2.90 $3.05 $3.20 $4.10 $4.35 $5.00 « Smooth, 2 « J each .29 .30 .32 .41 .43 .50 Round, Bastard, 0 « ] per doz. 2.05 2.25 2.50 3.25 3.35 3.70 tt Smooth, 2 « j each .20 .22 .25 .32 .33 .37 Flat, Bastard, o « 1 per doz. 2.80 3.00 3.15 4.15 4.35 4.80 61 Smooth, 2 « j each .28 .30 .31 .41 .43 .48 SPECIAL FILES (Grobet) FOR CROWN AND BRIDGE WORK Half-round, 3-inch Smooth, No. 6 Cut each $0.31; per doz. $3.15 Flat, 3 6 .31; 3.15 5 6 '. .50; 5.00