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Cavident Special Compound

https://mhc.andornot.com/en/permalink/artifact14856
Dates
1955
1960
circa 1955-1960
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020687
Description
Rectangular metal container with grey paper label on all sides with white text has an oval lid on one end and an opening covered by tan adhesive paper on the other; new, not opened.
  3 images  
Accession Number
010020687
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Rectangular metal container with grey paper label on all sides with white text has an oval lid on one end and an opening covered by tan adhesive paper on the other; new, not opened.
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa).
Maker
Cavitron Equipment Corporation
Site Made (City)
Long Island
Site Made (State)
New York
Site Made (Country)
United States of America
Dates
1955
1960
circa 1955-1960
Date Remarks
Based on donor's remarks
Material
metal: silver
paper: tan
ink: white, black
Inscriptions
Printed on label: "CAVIDENT // Special Compound // For use with the // CAVITRON // ULTRASONIC DENTAL UNIT // CAVITRON EQUIPMENT CORPORATION // LONG ISLAND CITY, N.Y."; printed on side of container: "DIRECTIONS // Initial charge - add one // pound of CAVIDENT (1/4 can) // to container three-quarters // filled with water. Check // concentration with plastic // Cavident Concentration // Checker. Add CAVIDENT // as needed. // Refill charge - fill container // with water to 3/4 level. Then // add small quantities of // CAVIDENT to bring concen- // tration up to required level // on Cavident Concentration // Checker. // NET WEIGHT 4 LBS."
Permanent Location
Storage Room 0010
0010-A1-1
Width
9.2 cm
Height
18.0 cm
Depth
6.7 cm
Unit Of Measure
centimeters
Condition Remarks
Paper labels shows wear, abraded with minor surface fading; metal on one end shows aging
Copy Type
original
Reference Types
Person
Reference Comments
Dr. George H. Stewart
Research Facts
Originally purchased by Dr. George H. Stewart from Thornbury, Ontario, who used it in the late 1950s onwards; it was purchased in 1957 for $1,800 and was well-received by his patients, as there was much less vibration than with the slower drills of the time; it cut only solid tooth, so decay was removed with excavators or burs. Dr. Stewart states that he was one of the few dentists who used this unit in a variety of ways, including in periodontal scaling, root canal filing, cavity preparation and amalgam condensation; the Cavitron system worked, in effect, as a rapid erosion process on teeth; Cavident, a cutting medium made up of specially graded aluminum oxide particles, was mixed with water and air in the unit, then applied between the tool and the surface of the tooth to create a precise, clean cut; the unit also had a water supply to cool the handpiece and to provide rinsing water.
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.
Images
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Cavident Special Compound

https://mhc.andornot.com/en/permalink/artifact14857
Dates
1955
1960
circa 1955-1960
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020688
Description
Rectangular metal container with grey paper label on all sides with white text has an oval lid on one end and an opening covered by tan adhesive paper on the other; new, not opened.
  3 images  
Accession Number
010020688
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Rectangular metal container with grey paper label on all sides with white text has an oval lid on one end and an opening covered by tan adhesive paper on the other; new, not opened.
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa).
Maker
Cavitron Equipment Corporation
Site Made (City)
Long Island
Site Made (State)
New York
Site Made (Country)
United States of America
Dates
1955
1960
circa 1955-1960
Date Remarks
Based on donor's remarks
Material
metal: silver
paper: tan
ink: white, black
Inscriptions
Printed on label: "CAVIDENT // Special Compound // For use with the // CAVITRON // ULTRASONIC DENTAL UNIT // CAVITRON EQUIPMENT CORPORATION // LONG ISLAND CITY, N.Y."; printed on side of container: "DIRECTIONS // Initial charge - add one // pound of CAVIDENT (1/4 can) // to container three-quarters // filled with water. Check // concentration with plastic // Cavident Concentration // Checker. Add CAVIDENT // as needed. // Refill charge - fill container // with water to 3/4 level. Then // add small quantities of // CAVIDENT to bring concen- // tration up to required level // on Cavident Concentration // Checker. // NET WEIGHT 4 LBS."
Permanent Location
Storage Room 0010
0010-A1-1
Width
9.2 cm
Height
18.0 cm
Depth
6.7 cm
Unit Of Measure
centimeters
Condition Remarks
Paper labels shows wear, abraded with minor surface fading; metal on one end shows aging; minor leak of powder through paper, store container right side up
Copy Type
original
Reference Types
Person
Reference Comments
Dr. George H. Stewart
Research Facts
Originally purchased by Dr. George H. Stewart from Thornbury, Ontario, who used it in the late 1950s onwards; it was purchased in 1957 for $1,800 and was well-received by his patients, as there was much less vibration than with the slower drills of the time; it cut only solid tooth, so decay was removed with excavators or burs. Dr. Stewart states that he was one of the few dentists who used this unit in a variety of ways, including in periodontal scaling, root canal filing, cavity preparation and amalgam condensation; the Cavitron system worked, in effect, as a rapid erosion process on teeth; Cavident, a cutting medium made up of specially graded aluminum oxide particles, was mixed with water and air in the unit, then applied between the tool and the surface of the tooth to create a precise, clean cut; the unit also had a water supply to cool the handpiece and to provide rinsing water.
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.
Images
Less detail

Cavident Special Compound

https://mhc.andornot.com/en/permalink/artifact14858
Dates
1955
1960
circa 1955-1960
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020689
Description
Rectangular metal container with grey paper label on all sides with white text has an oval lid on one end and an opening covered by tan adhesive paper on the other; new, not opened.
  3 images  
Accession Number
010020689
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Rectangular metal container with grey paper label on all sides with white text has an oval lid on one end and an opening covered by tan adhesive paper on the other; new, not opened.
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa).
Maker
Cavitron Equipment Corporation
Site Made (City)
Long Island
Site Made (State)
New York
Site Made (Country)
United States of America
Dates
1955
1960
circa 1955-1960
Date Remarks
Based on donor's remarks
Material
metal: silver
paper: tan
ink: white, black
Inscriptions
Printed on label: "CAVIDENT // Special Compound // For use with the // CAVITRON // ULTRASONIC DENTAL UNIT // CAVITRON EQUIPMENT CORPORATION // LONG ISLAND CITY, N.Y."; printed on side of container: "DIRECTIONS // Initial charge - add one // pound of CAVIDENT (1/4 can) // to container three-quarters // filled with water. Check // concentration with plastic // Cavident Concentration // Checker. Add CAVIDENT // as needed. // Refill charge - fill container // with water to 3/4 level. Then // add small quantities of // CAVIDENT to bring concen- // tration up to required level // on Cavident Concentration // Checker. // NET WEIGHT 4 LBS."
Permanent Location
Storage Room 0010
0010-A1-1
Width
9.2 cm
Height
18.0 cm
Depth
6.7 cm
Unit Of Measure
centimeters
Condition Remarks
Paper labels shows wear, abraded with minor surface fading; metal on one end shows aging; one corner on bottom is smushed a bit; minor leak of powder through paper, store container right side up
Copy Type
original
Reference Types
Person
Reference Comments
Dr. George H. Stewart
Research Facts
Originally purchased by Dr. George H. Stewart from Thornbury, Ontario, who used it in the late 1950s onwards; it was purchased in 1957 for $1,800 and was well-received by his patients, as there was much less vibration than with the slower drills of the time; it cut only solid tooth, so decay was removed with excavators or burs. Dr. Stewart states that he was one of the few dentists who used this unit in a variety of ways, including in periodontal scaling, root canal filing, cavity preparation and amalgam condensation; the Cavitron system worked, in effect, as a rapid erosion process on teeth; Cavident, a cutting medium made up of specially graded aluminum oxide particles, was mixed with water and air in the unit, then applied between the tool and the surface of the tooth to create a precise, clean cut; the unit also had a water supply to cool the handpiece and to provide rinsing water.
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.
Images
Less detail
Collection
Dr. Garfield Dormer Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
998012001 a-g
Description
Belt-driven dental drill, which consists of (a) a small cylindrical motor with an attached solid round base that has an on/off switch; the base also has an attached electrical cord and plug; the cord is plastic with paint on it; the plug is made of metal and bakelite; the top of the motor has an at…
  4 images  
Accession Number
998012001 a-g
Collection
Dr. Garfield Dormer Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Belt-driven dental drill, which consists of (a) a small cylindrical motor with an attached solid round base that has an on/off switch; the base also has an attached electrical cord and plug; the cord is plastic with paint on it; the plug is made of metal and bakelite; the top of the motor has an attached cylindrical metal piece that holds (b) a dental drill; the drill is cylindrical in shape and attached to three folding cylindrical solid metal arms that have round joints that allow the arms to move up, down and sideways; the end of the largest arm has a solid cylindrical metal piece that fits into the metal attachment on the motor; the round joints are joined together with (c) a cloth rope belt, which is made up of a single rope which was (now is not) sewn together at the ends to form a circle; a foot pedal (d) attaches to the motor's plug; the foot pedal consists of a rectangular-shaped metal box with an L-shaped base that has three round rubber feet; one side of the box has a semi-circular metal piece that moves up and down when stepped on; there is a plastic-coated electric cord coming out from the box; this cord has paint on part of it; the cord is a single line for 70.5 cm, then goes into a cyllindrical bakelite piece and comes out split into two cords; one of these split cords goes on for 110 cm, then ends with a two-prong plug; the other split cord goes on for 275.5 cm and ends with a bakelite cylindrical plug that fits with the plug that comes off the motor; the drill comes with an extra belt (e) which is also made of cloth rope; this belt is unused and the ends are sewn together; the belt is stored in (f) a small rectangular-shaped cardboard box with flaps at both ends and printing on all sides and the front; the box also contains (f) a folded printed paper sheet that has printed wording and illustrations for products available from Parkell Products, Inc.
Number Of Parts
7
Part Names
a - motor - Size: Length 23.3 cm. x Width 14.2 cm. x Depth 8.5 cm.
b - drill - Size: Length 273.4 cm. x Diam. 0.3 cm.
c - belt - Size: Length 271.8 cm. x Width 0.3 cm.
d - foot pedal - Size: Length 16.2 cm. x Width 12.9 cm.
e - belt - Size: Length 138.0 cm x Width 0.5 cm. x Depth 0.2 cm.
f - box - Size: Length 6.5 cm. x Width 3.6 cm. x Depth 2.0 cm.
g - instruction sheet (unfolded) - Size: Length 13.1 cm. x Width 20.9 cm.
Provenance
Originally owned and used by Dr. Garfield Dormer, who was the first to specialize in gums in Ottawa; Dr. Dormer was cousin to donor D.G. Mike Willis
Maker
Unknown
Site Made (Country)
United States of America
Material
metal: silver; grey
plastic: cream; black
fabric: grey
paint: black; green
Inscriptions
A label on the motor (a) reads, "EMESCO // TYPE 105 // VOLTS 110 H.P. 1/10 // R.P.M. 7.500 // MADE IN U.S.A."; the drill (b) is stamped, "Stain [logo] Less PAT // MADE IN U.S.A. BY // MIDWEST DENTAL MFG. CO."; the side of the foot pedal box (d) is stamped, "THE ELECTRICAL MFG. CO. // RACINE, WIS. // MADE IN U.S.A."; the box top reads, "4 PLY Hi-SPEED // SYNCRO-MESH // Dental Engine Belts // Endless - Heatless"; the box sides read "C [enclosed in circle] PARKELL Co., // Germany"; "4 PLY, Hi-SPEED // Length // 9'4''"; "SYNCRO-MESH construction // ensures longer life of smooth // operations."; and "4 PLY, Hi-SPEED // Length // 9'4""
Permanent Location
Storage Room 0010
0010-E5-3
Condition Remarks
All parts of the drill arrived very dirty and dusty; the motor (a) shows wear, especially where the electric cord attaches (a tape repair is visible); the base shows minor corrosion; (b) all moving parts of the drill still move; some corrosion is visible, especially on the smallest arm; (c) the belt shows wear and is no longer joined; some rust staining is visible; (d) paint on the foot pedal is very worn and minor corrosion is visible in exposed spots; (e) this belt appears to be unused and shows very little wear; (f) the box shows a great deal of wear and some staining; the top lid has torn off and one of the lower flaps has as well; all printing is legible; (g) the instruction sheet has been folded and shows very minor staining, but is not torn nor missing any areas; all printing is fully legible; #2: metal rusty in places; cord paint peeling
Copy Type
Original
Reference Types
JPG
Reference Comments
CD #4
Images
Less detail

dental drill controls

https://mhc.andornot.com/en/permalink/artifact11665
Dates
1957
1970
circa 1957-1970
Collection
Hotel Dieu Hospital Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
997010003
Description
Controls for Borden Airotor dental drill consists of vertical rectangular metal carcass supported by base on wheels; carcass has slot for retractable drill bit , metal handle, dial and gage at front and top, hook on side and handle at back which opens panel to interior compartment; interior has mec…
  4 images  
Accession Number
997010003
Collection
Hotel Dieu Hospital Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Controls for Borden Airotor dental drill consists of vertical rectangular metal carcass supported by base on wheels; carcass has slot for retractable drill bit , metal handle, dial and gage at front and top, hook on side and handle at back which opens panel to interior compartment; interior has mechanism including plastic and metal tubes, cloth braided cable, two glass jars and plastic bottle; carcass has cables at back; one cable ends in foot-operated pedal and another cable in metal nozzle attachment for external compressor.
Number Of Parts
1
Provenance
Used at Hotel Dieu Hospital in Kingston
Maker
Amalgamated Dental Engineering Industries Ltd.
Site Made (City)
Walton-On-Thames
Site Made (State)
Surrey
Site Made (Country)
England
Dates
1957
1970
circa 1957-1970
Date Remarks
Date based on date of first commercially manufactured and distributed Borden Airotor, style of "Sterling" label indicates c 1950s.
Material
metal: beige, silver, yellow
plastic: grey, black, clear
rubber: black, grey, clear
glass: clear
fabric: black, grey
liquid: yellow
Inscriptions
Embossed on nameplate affixed to carcass: "Sterling"; printed on metal plate: "STERLING CONTROLS // FOR // BORDEN AIROTOR // AN "AMALGAMATED DENTAL" PRODUCT // TYPE 4 // SERIAL NO 2477".
Permanent Location
Storage Room W1
W1-4-2
Dimension Notes
Length 99.0 cm x Width 32.0 cm x Depth 27.0 cm
Condition Remarks
Paint wearing off carcass; minor scratching on sides; organic residue on base and in slot; rubber edging is cracked and detaching from carcass at top; interior walls of carcass stained and rusting; rubber ring stiff; plastic bottle stained; glass jar showing fracture lines; cloth braided cable is frayed and cut at one end; cable to pedal is beginning to pulverize; rubber on pedal is torn.
Copy Type
Original
Reference Types
Internet
JPG
Reference Comments
Wikipedia; CD #6
Research Facts
Used as controls for Borden Airotor dental drill
Images
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dental drill unit

https://mhc.andornot.com/en/permalink/artifact13592
Dates
1955
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020448
Description
Stainless steel dental drill unit; rectangular cabinet with glass top on piece of fibreboard, bordered with black plastic and silver metal; silver metal pipe with metal coils holds grey rubber tube; metal drill handle at end; cabinet door opens to motor, pump and green rubber bucket on metal platfo…
Accession Number
010020448
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Stainless steel dental drill unit; rectangular cabinet with glass top on piece of fibreboard, bordered with black plastic and silver metal; silver metal pipe with metal coils holds grey rubber tube; metal drill handle at end; cabinet door opens to motor, pump and green rubber bucket on metal platform; water travels from bucket through pump and silver metal pipes inside cabinet into grey tubing at top of cabinet and ultimately into drill handle; control switch is on the side of cabinet; rubber wheels at bottom
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Bowen & Company, Inc.
Site Made (City)
Bethesda
Site Made (State)
Maryland
Site Made (Country)
United States of America
Dates
1955
Date Remarks
Based on donor's remarks
Material
metal: silver, brown
fibreboard: brown
paint: black, blue
fabric: yellow
rubber: grey, black
plastic: black
Inscriptions
(a) Printed on unit: "KERN // TURBO-JET DENTAL UNIT // PATENT APPLIED FOR // MANUFACTURED BY // BOWEN & COMPANY, INC. // BETHESDA, MARYLAND"; printed inside unit door: "MADE FROM // ALLEGHENY LUDLUM // STAINLESS STEEL"; painted inside unit: "CAUTION // DISCONNECT MACHINE // FROM SOURCE OF SUPPLY // BEFORE REMOVING THIS // COVER"
Permanent Location
Storage Room W2
W2-536-6-1
Dimension Notes
Length 1.74 m x Width 44.0 cm x Depth 43.0 cm
Condition Remarks
Insulation inside unit is pulling off wall; mineral deposits on internal tubing
Copy Type
Original
Reference Types
Document
Reference Comments
Previous Dental Canada Fund / Crawford Inventory List #: 108-A
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 originally owned by Dr. Donald Beauprie from Deep River, Ontario
Less detail

dental drill unit

https://mhc.andornot.com/en/permalink/artifact13102
Dates
1957
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020013 a-b
Description
Metal dental drill unit (a), enamelled in beige; rectangular cabinet with glass top on piece of fibreboard, bordered with black plastic and silver metal; silver metal pipe with metal coils holds grey rubber tube; metal drill handle at end; cabinet door opens to motor, pump and grey rubber bucket on…
  2 images  
Accession Number
010020013 a-b
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Metal dental drill unit (a), enamelled in beige; rectangular cabinet with glass top on piece of fibreboard, bordered with black plastic and silver metal; silver metal pipe with metal coils holds grey rubber tube; metal drill handle at end; cabinet door opens to motor, pump and grey rubber bucket on metal platform, which can be lowered then locked into place via brass handle; water travels from bucket through pump and silver metal pipes inside cabinet, into grey tubing at top of cabinet and ultimately into drill handle; control switch on side of cabinet; metal wheels at bottom; manufacturer's brochure (b) printed with orange and black ink on rectangular white paper, folded in four sections; demonstrates why dentists should choose a Turbo-Jet hydraulic handpiece, lists the high speed diamond instruments available and their prices
Number Of Parts
2
Part Names
a - unit - Size: Length 1.60 m x Width 44.3 cm x Depth 43.1 cm
b - brochure - Size: Length 15.7 cm x Width 8.4 cm x Depth 0.1 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Bowen & Company, Inc.
Site Made (City)
Bethesda
Site Made (State)
Maryland
Site Made (Country)
United States of America
Dates
1957
Date Remarks
Based on donors remarks
Material
metal: silver, brown
enamel: beige
fibreboard: brown
paint: black
fabric: yellow
rubber: grey
plastic: black
paper: white
ink: orange, black
Inscriptions
(a) Printed on unit: "KERN // TURBO-JET DENTAL UNIT // PATENT APPLIED FOR // MANUFACTURED BY // BOWEN & COMPANY, INC. // BETHESDA, MARYLAND"; printed inside unit door: "TURBO-JET // DENTAL UNIT // PATENT APPLIED FOR // MODEL No. 153 // VOLTS 115 // CYCLES 60 // AMP. 7.0 // MANUFACTURED BY // BOWEN & COMPANY, INC. // BETHESDA, MARYLAND"; painted inside unit: "CAUTION // DISCONNECT MACHINE // FROM SOURCE OF SUPPLY // BEFORE REMOVING THIS // COVER"; (b) printed on cover: "TURBO- // JET // Patent Applied For // HYDRAULIC // TURBINE // HANDPIECE // Manufactured by // BOWEN & // COMPANY, INC. // P.O. BOX 5818 // BETHESDA 14, MD."; stamped on cover: "PATERSON & PATERSON INC."
Permanent Location
(a) Storage Room W2
W2-536-1-1
(b) Storage Room 2005
2005-2-5 Box 20
Condition Remarks
Rubber sticky but malleable; plastic and metal border around top of cabinet loose at back; electric wire frayed; parts of dental drill handle corroded
Copy Type
Original
Reference Types
Book
Person
JPG
Reference Comments
“The development of the dental high-speed air turbine handpiece”, J.E. Dyson and B.W. Darvell, 1993, p. 58; Dr. George Allison
CD #9
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 originally owned by Dr. George Allison from Hanover, Ontario, who purchased it in 1957; the unit is a simple pump and turbine and used water to operate; it operates via a foot control but has only one speed - 50 000 rpm; G.R. Kern was a mechanic from Arlington, VA who filed the original patent, but by 1956 Bowen was manufacturing the units under the 'Kern Turbo-Jet' name; these units were made obsolete after the introduction of air turbine-powered drills, specifically the Airotor unit
Images
Less detail

dental drill unit

https://mhc.andornot.com/en/permalink/artifact13104
Dates
1955
1960
circa 1955-1960
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020015 a-b
Description
Metal Cavitron dental drill unit, enamelled in beige (a); rectangular unit with sloping top; control panel has two lights at top, labelled "TUNE" and "OPERATE", small gauge with white paper labelled "MILLIAMPERES" in black ink, on/off switch, two black knobs labelled "OUTPUT" and "TUNE"; silver met…
  2 images  
Accession Number
010020015 a-b
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Metal Cavitron dental drill unit, enamelled in beige (a); rectangular unit with sloping top; control panel has two lights at top, labelled "TUNE" and "OPERATE", small gauge with white paper labelled "MILLIAMPERES" in black ink, on/off switch, two black knobs labelled "OUTPUT" and "TUNE"; silver metal handles on either side of unit; metal holder for handpiece on right side; generator in top half of unit; door to unit on front lower half; water supply and air injection systems found inside, including metal container for water and Cavident abrasive powder, pump motor, water and air gauges, pipes and valves to mix the Cavident and water, to inject air into the mixture and to pump it towards the handpiece; pipes and wires coming out bottom of unit at back; cylindrical silver metal foot control with lever attached via black rubber wire operates pump; four rubber wheels at bottom of unit; manufacturer's pamphlet (b) with two staple closure, white pages printed with black ink, blue cover with black ink; 20 pages.
Number Of Parts
2
Part Names
a - unit - Length 92.0 cm x Width 51.0 cm x Depth 40.5 cm
b - pamphlet - Length 27.9 cm x Width 21.6 cm x Depth 0.2 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa).
Maker
Cavitron Equipment Corporation
Site Made (City)
Long Island
Site Made (State)
New York
Site Made (Country)
United States of America
Dates
1955
1960
circa 1955-1960
Date Remarks
Based on donor's remarks
Material
metal: silver, brown, black, yellow
enamel: beige, black
paper: brown
rubber: black
plastic: clear
ink: grey, black, white
Inscriptions
(a) Printed on top of unit: "CAVITRON // ULTRASONIC // DENTAL EQUIPMENT"; printed on controls: "MARION ELECTRICAL INSTRUMENT CO., U.S.A. // MILLIAMPERES // CAVITRON"; printed on unit door: "CAVITRON // MODEL 0210 SERIAL # 2412 // VOLTS 115 AMPS 5.8 // FREQ. 60CPS PHASE 1 // THIS EQUIPMENT AND IT'S ACCESSORIES // ARE LICENSED BY CAVITRON CORPORATION // UNDER CANADIAN PATENT 496.396 // THE PURCHASER OF THIS EQUIPMENT IS // LICENSED TO USE THE SAME IN CARRYING // OUT THE PROCESS OF THE AFORESAID // PATENT. BUT ONLY IN THE PRACTICE // OF DENTISTRY IN THE DOMINION // OF CANADA"; printed on piece of paper taped to back of unit: "DENTAL SURGEON // PHONE 270 THORNBURY", written in blue ink: "
Permanent Location
(a) Storage Room Warehouse 2 Unit 536
W2
(b) Storage Room 2005
2005-2-5 Box 20
Condition Remarks
Some enamel chipping on unit; rubber coming loose on handpiece holder; metal corroded on screws on top of unit, electrical socket on side of unit, pipes on back of unit, handpiece holder; paper labels faded and slightly ripped in places on (b, c, d); ink stains on cover of (e); brown marks on cover and pages of (e)
Copy Type
Original
Reference Types
Person
Reference Comments
Dr. George H. Stewart
Research Facts
Originally purchased by Dr. George H. Stewart from Thornbury, Ontario, who used it in the late 1950s onwards; it was purchased in 1957 for $1,800 and was well-received by his patients, as there was much less vibration than with the slower drills of the time; it cut only solid tooth, so decay was removed with excavators or burs. Dr. Stewart states that he was one of the few dentists who used this unit in a variety of ways, including in periodontal scaling, root canal filing, cavity preparation and amalgam condensation; the Cavitron system worked, in effect, as a rapid erosion process on teeth; Cavident, a cutting medium made up of specially graded aluminum oxide particles, was mixed with water and air in the unit, then applied between the tool and the surface of the tooth to create a precise, clean cut; the unit also had a water supply to cool the handpiece and to provide rinsing water.
Three metal containers of Cavident catalogued separately as 010020687, .688, .689
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.
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dental drill unit

https://mhc.andornot.com/en/permalink/artifact13110
Dates
1960
1965
circa 1960-1965
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020021
Description
Metal dental drill unit, enamelled in grey; rectangular unit sits atop grey metal square base; top is flat then slopes down and has a thin grey rubber border; grey plastic knob and small clear glass indicator at top; round gauge with black dial pointing to green and red borders on slope; silver met…
  2 images  
Accession Number
010020021
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Metal dental drill unit, enamelled in grey; rectangular unit sits atop grey metal square base; top is flat then slopes down and has a thin grey rubber border; grey plastic knob and small clear glass indicator at top; round gauge with black dial pointing to green and red borders on slope; silver metal handpiece comes out of rectangular opening, attached via black fabric-covered wire; metal foot pedal with black rubber ridged covering attached via three grey wires, stuck together; black fabric-covered electrical wire attached at back; unit mounted on wheels
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Amalgamated Dental Engineering Industries Ltd.
Site Made (City)
Walton-On-Thames
Site Made (State)
Surrey
Site Made (Country)
England
Dates
1960
1965
circa 1960-1965
Date Remarks
Based on donor's remarks
Material
metal: silver
enamel: grey, green, red
rubber: black, grey
fabric: black
glass: clear
plastic: grey, white
Inscriptions
Printed on back of unit: "STERLING CONTROLS // FOR // BORDEN AIROTOR // AN "AMALGAMATED DENTAL" // PRODUCT // TYPE 4 SERIAL No. 2549 // VOLTS ~ // AMPS WATTS // MADE IN ENGLAND BY // AMALGAMATED DENTAL // ENGINEERING INDUSTRIES LTD. // WALTON-ON-THAMES, SURREY"; embossed on front of unit: "Sterling"; printed on knob on top of unit: "INCREASE //
Permanent Location
Storage Room W2
W2-536-4-1
Dimension Notes
Length 97.0 cm x Width 32.0 cm x Depth 26.9 cm
Condition Remarks
Enamel chipping at base; rubber wires are sticky but malleable; black electrical wire missing end, fabric is faded; rubber border around top broken at back
Copy Type
Original
Reference Types
Person
Book
JPG
Reference Comments
Dr. P. Ralph Crawford; “The development of the dental high-speed air turbine handpiece”, J.E. Dyson and B.W. Darvell, 1993, p. 58
CD #9
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 by Allan Quackenbush from Thunder Bay, Ontario; it was used by his father, Dr. Howard Quackenbush, who graduated from the University of Toronto in the early 1920s; the Airotor drill unit, using a high-speed air turbine system, replaced earlier drills that used a water turbine system; it ushered in a new era of 'sit-down' dentistry due to the high speed of the drill; this technology is still used into the present day
Images
Less detail

dental drill unit

https://mhc.andornot.com/en/permalink/artifact13206
Dates
1960
circa 1960
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020117
Description
Rectangular silver metal dental drill unit with rounded edges at top; two round knobs with ridged sides at top, one for water, one for air; three rubber wires, one red, one black, one white, and two black fabric-covered wires come out of black rubber-coverd hole at side; wires are bundled together …
  3 images  
Accession Number
010020117
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Rectangular silver metal dental drill unit with rounded edges at top; two round knobs with ridged sides at top, one for water, one for air; three rubber wires, one red, one black, one white, and two black fabric-covered wires come out of black rubber-coverd hole at side; wires are bundled together with black and yellow fabric covering and black electrical tape; white and black wires have white plastic ends; two oval cut-outs on other side of unit; black rubber wire with silver metal end comes out metal attachment in top oval; on/off switch beside it
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
S.S. White Dental Mfg. Co.
Site Made (City)
Philadelphia
Site Made (State)
Pennsylvania
Site Made (Country)
United States of America
Dates
1960
circa 1960
Date Remarks
Based on donors remarks
Material
metal: silver
rubber: black, white, red
fabric: black, yellow
plastic: white
Inscriptions
Printed on side: "S.S. WHITE // CONTROL FOR OPERATING // AIROTOR HANDPIECE // S.S. WHITE // TRADE MARKS // REG. IN U.S. PAT. OFF. AND ELSEWHERE // MODEL A SERIAL NO. 8498 // VOLTS CYCLES AMPS. WATTS // 110-130 50-60 1 25 // S.S. WHITE DENTAL MFG. CO. // MADE IN U.S.A."; engraved near knobs at top: "INCREASE // AIR"; "INCREASE // WATER"; engraved near switch at side: "ON // OFF"
Permanent Location
Storage Room 0007
0007-D2-5
Dimension Notes
Length 21.6 cm x Width 19.3 cm x Depth 11.9 cm
Condition Remarks
Fabric covering group of wires fraying; black grease on fabric; knob for water at top no longer spins; knob missing at side
Copy Type
Original
Reference Types
Person
Book
JPG
Reference Comments
Dr. P. Ralph Crawford; “The development of the dental high-speed air turbine handpiece”, J.E. Dyson and B.W. Darvell, 1993, p. 58
CD #9
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 by George Oterbauer from Toronto, Ontario; it would have been attached to a dental unit, as opposed to standing alone; this was the first Airotor drill unit produced; the Airotor, using a high-speed air turbine system, replaced earlier drills that used a water turbine system; this technology introduced the era of 'sit-down' dentistry due to the high speed (up to 300 000 RPM) of the drill; it is still used in the present day
Images
Less detail

19 records – page 1 of 2.