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Object Record

Catalog Number 02.0019.037
Object Name Tray, Impression
Title Detroit Dental Mfg. C. Impression Tray (Upper)
Description Steel. U-shaped with shallow tray and hump for tongue. Four holes and two brackets. Stamped with "Patented Mar. 14, 1911; Feb. 9, 1915, Detroit Dental Mfg. Co., 2 (.01), 1 (.02)." No number on .03 and no holder.

02.0019.037.01 - Narrow tray
02.0019.037.02 - Wide tray
02.0019.037.03 - Small tray (child’s ?)
Date early 20th century
Collection H. Trendley Dean Collection
Accession number 02.0019.037
Caption Detroit Dental Mfg. C. Impression Tray (Upper)
Catalog date 2004-10-06
Catalog type History
Provenance Used by Dr. H. Trendley Dean (1893-1962), the first dental scientist a the National Institute of Health (1931-1953). He was most known for his studies of mottled teeth, fluoride, and dental caries which resulted in the first city-wide addition of fluoride to drinking water in Grand Rapids, Michigan in 1945. He became the first director of the National Institute of Dental Research in 1948, where he remained until he retired.

Impression trays were filled with plaster, wax, or other modeling compound to make a mold of the teeth and palate. The molds were used for making bridges, dentures, etc.
Number of images 1
Updated 2012-09-25
Condition Good
Organizations NIH; NIDR (National Institute of Dental Research) (1948-1998)
NIH Property # none
Old NIH Property # none
Serial # none
People Dean, H. Trendley
Jaquet, Brent