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lower dental impression tray

https://mhc.andornot.com/en/permalink/artifact13699
Dates
1875
1885
circa 1875-1885
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020531
Description
Lower dental impression tray is made of formed silver metal; tray is 'U' shaped with ends that curve downwards; the base of the tray is rounded except for a flat space for the incisors, canines and premolars; there is an empty space in the middle of the tray to accommodate the tongue; straight hand…
  4 images  
Accession Number
010020531
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental Impression Materials
Dental Equipment
Description
Lower dental impression tray is made of formed silver metal; tray is 'U' shaped with ends that curve downwards; the base of the tray is rounded except for a flat space for the incisors, canines and premolars; there is an empty space in the middle of the tray to accommodate the tongue; straight handle has been welded to the base of the 'U' and tapers to a rounded tip; there is a hole drilled through the handle near the base; the manufacturer's logo has been stamped around the hole in the handle; model number has also been stamped into the handle.
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Claudius Ash & Sons
Site Made (Country)
England
Dates
1875
1885
circa 1875-1885
Date Remarks
Based on supplier's catalogue
Material
metal: silver
Inscriptions
Stamped into handle: "IDEAL // 2 // C. ASH & SONS // ENGLAND"
Permanent Location
Storage Room 0010
0010-B
Dimension Notes
Length 9.2 cm x Width 6.9 cm x Depth 2.0 cm
Condition Remarks
Scratches and dents present all over the tray and handle; shows signs of use; pink residue is present on the top and bottom of tray, this is most likely remnants of moulding material.
Copy Type
Original
Reference Types
Internet
JPG
Reference Comments
"A Catalogue of Artificial Teeth, Dental Materials, Instruments, Tools, Furniture & [C.]", Claudius Ash & Sons, 1875, p.186 (similar to model # F No. 2); "University of Birmingham School of Dentistry" website; "Wikipedia" website; CD #4
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; Claudius Ash & Sons began in 1820 and was a major manufacturer of dentures and dental equipment; in 1924 the company merged with de Trey & Company forming the Amalgamated Dental Company; impression trays are used to make impressions of the teeth and soft tissue for many dental procedures including orthodontics, prosthetics, casts and models
Images
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