General Information

Serial #

N/A

Part Number

1

Total Parts

3

AKA

N/A

Patents

N/A

General Description

STEEL

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

15.5 cm

Width

N/A

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Medical Technology

Category

Dentistry

Sub-Category

N/A

Manufacturer

AKA

Biddle

Country

United States of America

State/Province

New York

City

New York

Context

Country

Canada

State/Province

Ontario

Period

THIS TYPE OF INSTRUMENT PROBABLY USED C.1870S-1880S. THESE BURS MAY HAVE BEEN USED IN EARLY 20TH C.

Canada

PART OF A COLLECTION OF DENTAL & DENTURE MAKING EQ. ORIGINALLY USED/ ASSEMBLED BY P.HANNAFORD. MR. HANNAFORD WORKED IN THE DENTAL INDUSTRY FOR MANY YEARS. C.1916-17 HE WAS HIRED BY ALLEN & ROLLASTON LTD., TORONTO. OTTAWA LAB. EST'D. 1929; & LABS. OPERATED IN HAMILTON & MONTREAL. C.1967 A&R LTD. SOLD TO SHAW DENTAL LABS.

Function

FOR ENTRY INTO AND REMOVAL OF CARIOUS ENAMEL IN TEETH. SMALL-HEAD ROUND BURS ALSO USED TO PREPARE TOOTH FOR PLACEMENT OF PIN FOR CAP, CROWN, ETC.

Technical

EARLY HAND-CUTTING INSTRUMENT, PRECURSER TO MOTOR-DRIVEN OR ROTARY CUTTING BURS. MECHANICAL OR MOTOR DRIVEN DENTAL UNITS INTRODUCED IN 1870S, BUT NOT FULLY DEV'D UNTIL 1940S: THEY, IN COMBINATION WITH EFFECTIVE ANESTHETICS & IMPROVED FILLING & RESTORATION MATERIALS & TECHNIQUES, HERALDED MODERN PAINLESS DENTISTRY. THESE BUR HEAD SHAPES STILL USED C.1980S+. (TORRES, H.O. MODERN DENTAL ASSISTING, 2ND ED. 1980)

Area Notes

Unknown

Details

Markings

'J. BIDDLE N.Y.' STAMPED INTO HANDLE

Missing

NONE

Finish

FINE STRIATIONS INCISED IN INSTRUMENT HANDLE, HANDLE HAS BEEN CHEMICALLY TREATED TO PRODUCE A DARKER, DULLER SILVER-GREY COLOUR

Decoration

N/A