Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Dental
Communication
Dentures
Classification
Dental
Communication
Dentures
Accession Number
010020146 a-c
Description
Dental shade guides for acrylic resin teeth for removable partial dentures; upper posterior guide (a) consists of 18 acrylic resin teeth screwed upside down into clear plastic holders; holders are attached at top to a rectangular grey plastic holder covered with clear plastic; each tooth has, under…
Dental shade guides for acrylic resin teeth for removable partial dentures; upper posterior guide (a) consists of 18 acrylic resin teeth screwed upside down into clear plastic holders; holders are attached at top to a rectangular grey plastic holder covered with clear plastic; each tooth has, underneath it, a number from 20-38, and a number from 1A-6D printed with gold and silver ink; lower posterior guide (b) has teeth right side up; article (c) from the August 1983 issue of The Journal of Prosthetic Dentistry written by Dr. Oskar Sykora and explaining why he made the guides and how he made them; white page printed with black and yellow ink.
Number Of Parts
3
Part Names
a - upper posterior guide - Size: Length 21.2 cm x Width 5.7 cm x Depth 0.8 cm
b - lower posterior guide - Size: Length 21.2 cm x Width 5.7 cm x Depth 0.8 cm
c - article - Size: Length 27.7 cm x Width 20.5 cm x Depth 0.1 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa).
(a, b) Printed on front: "IVOCLAR // SR-VIVODENT PE // "PERL-EFFECT""; embossed on back: "MADE IN LIECHTENSTEIN"
Permanent Location
(a, b): Storage Room 0010
0010- Diagnostic & Treatment Artifacts
(c): Storage Room 2005
2005-2-5 Box 21
Condition Remarks
Shade 6D missing on (a); edges of (c) are darkened
Copy Type
Original
Reference Types
Person
Reference Comments
Dr. Oskar Sykora
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.
this item was donated and created by Dr. Oskar Sykora from Halifax, Nova Scotia; he states that many shade guides came for porcelain teeth only, or they had more selection for anterior teeth than posterior teeth, or they ignored the posterior teeth altogether; these shade guides were created by Dr. Sykora to overcome those limitations; his method involved removing the incisors (anterior teeth) from the manufacturer's guide and replacing them with premolars selected from all the manufacturers; he did this by drilling a small hole in each tooth and screwing them into the original shade guide holder