Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Dental
Classification
Dental
Accession Number
010020163 a-b
Description
Cylindrical clear glass bottle containing powdered silver; bottle (a) tapers inward at neck, round opening at top; yellow crescent-shaped label at front in middle printed with silver ink states manufacturing company; black plastic twist cap (b) is round with ridges around the edge; smaller black cy…
Cylindrical clear glass bottle containing powdered silver; bottle (a) tapers inward at neck, round opening at top; yellow crescent-shaped label at front in middle printed with silver ink states manufacturing company; black plastic twist cap (b) is round with ridges around the edge; smaller black cylinder, also with ridges around edge, on top; bottle is approximately half full.
Number Of Parts
2
Part Names
a - bottle - Size: Length 5.1 cm x Diam. 3.1 cm
b - cap - Size: Depth 2.4 cm x Diam. 3.2 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
(a) Printed on front: "CRESCENT DENTAL // MFG. CO. // TRADE MARK"; embossed on bottom: "3-5"
Permanent Location
Storage Room 0010
0010-A3-7
Condition Remarks
Paper label slightly faded
Copy Type
Original
Reference Types
Book
JPG
Reference Comments
"Material in Dentistry: Principles and Applications, 2nd ed.", Jack L. Ferracane, 2001, p. 4, 122
CD #10
Research Facts
Dr Ralph and Mrs Olga Crawford donated their extensive Canadian dental collection to the DCF to create the museum in 1997; further donations were received while Dr Crawford was Curator Emeritus at the Dental Canada Museum until its closure in 2008; dental silver is used in the creation of amalgam fillings, which consist of 40-50% liquid mercury mixed with one or more metals; amalgams were first used in France in the early 19th century, but the modern 'recipe' was perfected by Dr. G. V. Black in the 1890s in Chicago; the metal usually contains a high percentage of silver (around 70%) and a mix of tin, copper and zinc; high copper amalgams are also available, where the silver content is much lower (as low as 40%) and the copper much more prevalent