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lower denture model

https://mhc.andornot.com/en/permalink/artifact14540
Dates
1940
1950
circa 1940-1950
Category
Dentures
Classification
Dentures
Accession Number
010020623 a-c
Description
Shaped lower denture model base (a) in yellow plastic with pink tones and integrated front teeth and two back molars has two separate partial dentures (b-c) with gold base; partials with two sections of gold base with cream porcelain molars and decorative gold bridge fits on base model; Dental info…
  5 images  
Accession Number
010020623 a-c
Category
Dentures
Classification
Dentures
MeSH Heading
Dental Models
Dental Prosthesis -- models
Description
Shaped lower denture model base (a) in yellow plastic with pink tones and integrated front teeth and two back molars has two separate partial dentures (b-c) with gold base; partials with two sections of gold base with cream porcelain molars and decorative gold bridge fits on base model; Dental information: RPD-L: two seperate RPD-L's; all gold frames and bases; C1.III. design on right side and C1.II. design on the left side.
Number Of Parts
3
Part Names
a - base
b-c - partial
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa); original donor was dentist Dr. Oskar Sykora of Halifax, Nova Scotia.
Dates
1940
1950
circa 1940-1950
Material
plastic: pink, yellow, cream
metal: gold
Inscriptions
On base: "A. R MONTREAL // 7"
Permanent Location
Storage Room 0010
0010-B2-11 Row D
Length
7.3 cm
Width
5.4 cm
Height
2.2 cm
Unit Of Measure
centimeters
Condition Remarks
Base shows ink pen marks from demonstrations; surface grime
Copy Type
original
Images
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upper denture model

https://mhc.andornot.com/en/permalink/artifact14542
Dates
1940
1950
circa 1940-1950
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Dentures
Classification
Dentures
Accession Number
010020625
Description
Upper denture model with pink toned vulcanite as the base with silver metal washer type of ring on the upper portion and cream porcelain teeth except one is missing and two have gold teeth; Dental information: CUD vulcanite base with a metal ring for a suction cup with rubber part missing; two gold…
  4 images  
Accession Number
010020625
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Dentures
Classification
Dentures
MeSH Heading
Dental Models
Dental Prosthesis -- models
Description
Upper denture model with pink toned vulcanite as the base with silver metal washer type of ring on the upper portion and cream porcelain teeth except one is missing and two have gold teeth; Dental information: CUD vulcanite base with a metal ring for a suction cup with rubber part missing; two gold teeth swaged type; lateral tooth is missing.
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa); original donor was dentist Dr. Oskar Sykora of Halifax, Nova Scotia.
Dates
1940
1950
circa 1940-1950
Material
vulcanite: pink
porcelain: cream
metal: gold, silver
Permanent Location
Storage Room 0010
0010-B
Length
6.1 cm
Width
4.5 cm
Height
2.3 cm
Unit Of Measure
centimeters
Condition Remarks
Missing one front tooth
Copy Type
original
Images
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lower denture model

https://mhc.andornot.com/en/permalink/artifact15271
Dates
1960
2015
circa 1960-2015
Category
Dental
Dentures
Classification
Dental
Dentures
Education
Accession Number
015039001
Description
Lower denture made of resin with pink gums and white teeth, attached to a clear, yellow-tinted plastic base using metal dental implants consisting of four metal screws; there are fourteen teeth, and on the bottom of the clear resin base, there are words handwritten in black marker.
  5 images  
Accession Number
015039001
Category
Dental
Dentures
Classification
Dental
Dentures
Education
MeSH Heading
Dental Care
Dental Equipment
Dental Implants
Dental Models
Dental Prosthesis
Dentistry
Dentistry -- models
Denture, Complete -- models
Denture, Complete, Lower
Description
Lower denture made of resin with pink gums and white teeth, attached to a clear, yellow-tinted plastic base using metal dental implants consisting of four metal screws; there are fourteen teeth, and on the bottom of the clear resin base, there are words handwritten in black marker.
Number Of Parts
1
Provenance
Belonged to donor.
Maker
Locator
Dates
1960
2015
circa 1960-2015
Date Remarks
Based on date that this type of implant was invented
Material
resin: clear/yellow, pink, white
metal: grey
ink: black
Inscriptions
Embossed on back: "LOCATOR®"; handwritten on bottom: "Lower Full // denture // secured with // Implants".
Permanent Location
Storage Room 0010
0010-B2-9 Row B
Length
8.0 cm
Width
5.0 cm
Height
3.3 cm
Unit Of Measure
centimeters
Copy Type
original
Reference Types
Exhibit
Reference Comments
The Museum of Health Care at Kingston's "Toothless: A History of Dentures" exhibit.
Research Facts
This denture is made from acrylic resin, a material introduced into denture-making in the 20th century and still dominates today; it is light, easy to shape, and realistic looking. This type of implant, the metal screws which connect the denture to the base, were developed by Swedish surgeon Per-Ingvan Branemark in the 1960s, and they were a revolution in the field.
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lower denture model

https://mhc.andornot.com/en/permalink/artifact15272
Dates
1960
2015
circa 1960-2015
Category
Dental
Dentures
Classification
Dental
Dentures
Education
Accession Number
015039002
Description
Plaster model of lower partial metal denture frames before the teeth are placed; the upper half of the plaster, including the teeth, is light green, and the bottom half is cream; there are words handwritten in black marker on the bottom.
  5 images  
Accession Number
015039002
Category
Dental
Dentures
Classification
Dental
Dentures
Education
MeSH Heading
Dental Care
Dental Equipment
Dental Implants
Dental Models
Dental Prosthesis
Dentistry
Dentistry -- models
Description
Plaster model of lower partial metal denture frames before the teeth are placed; the upper half of the plaster, including the teeth, is light green, and the bottom half is cream; there are words handwritten in black marker on the bottom.
Number Of Parts
1
Provenance
Belonged to donor.
Dates
1960
2015
circa 1960-2015
Date Remarks
Based on other denture models of the same lot
Material
plaster: green, cream
metal: grey
ink: black
Inscriptions
Handwritten on bottom: "Lower // Partial denture // Frames // before teeth // placed".
Permanent Location
Storage Room 0010
0010-B2-9 Row A
Length
7.5 cm
Width
6.4 cm
Height
3.8 cm
Unit Of Measure
centimeters
Copy Type
original
Reference Types
Website, Denturist
Reference Comments
Danielle Arsenault, DD (Denturist)
Colgate Oral Care Centre, "What Are Dentures Made Of?", by Tracey Sandilands, last updated 2019: https://www.colgate.com/en-us/oral-health/cosmetic-dentistry/dentures/what-are-dentures-made-of-0415
Research Facts
This is a Mandibular Partial Cast framework on die stone model (lower jaw)
Clasification #3 Modification #1 (bilateral space between the molar and front teeth, on different sides of the same arch)
Die stone Green (High-strength or improved stone): can withstand up to 5,000 lbs of pressure. This is normally used for partal castings or crown and bridge work for its high strength as well as preserving details within the impression. The base of model in photos 1-6 is made of regular stone (type 3) which can withstand up to 3,000 lbs of pressure. This was used as the base of the model for cost effectiveness.
Molars: because of the classification mentioned previously the molars will be used as anchors for the denture. The anchors in this casting are called akers clasps which are most commonly used because of their design. They are strong, and resistant clips that help hold the denture in place while the patient is chewing or talking.
Front teeth: normally for this design there would be clasps on the teeth that are closest to the space. However, having no clasps increases the patients esthetics but can reduce the resistance while the patient is chewing or talking.
Front teeth, metal plate: the metal plate at the back of the front teeth is known as "lingual apron" this is the major connector which means it connects one side of the arch to the other. There are many types of major connectors however this one is more commonly used. This will protect the back of the remaining teeth as well as prevent the denture from tipping during chewing or talking. This is also used incase the patient looses one of the front teeth for easy addition of another denture tooth.
Metal between the front tooth and molar: this is the area where the denture teeth will be placed. The metal is known as mesh and is used to retain the plastic base (acrylic). This is also used to connect the front part of the denture to the back teeth. Unfortunately metal and acrylic do not bond together properly so the mesh (holes) will aid in the strengh of the bond.
Cast framework: The majority of castings are made from chromem-colbalt unless specifided by dentist or denturist. Other metals such as; gold, platinum, pallidum, nickel, titanium, ticonium can be used based on the patients needs.
A framework is needed to support dentures, and can be made of resin or metal (often chrome cobalt). Metal plates are less likely to break, and are good for partial plates to be hidden behind remaining teeth, as in this model.
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upper denture model

https://mhc.andornot.com/en/permalink/artifact15273
Dates
1960
2015
circa 1960-2015
Category
Dental
Dentures
Classification
Dental
Dentures
Education
Accession Number
015039003
Description
Cream-coloured plaster denture model with three implanted teeth and one implant platform; between the teeth and the plaster base there is a pink rubbery substance acting as the gums; there is a slot in the plaster at the back about four centimeters long, and there are handwritten words in black mar…
  5 images  
Accession Number
015039003
Category
Dental
Dentures
Classification
Dental
Dentures
Education
MeSH Heading
Dental Care
Dental Equipment
Dental Implants
Dental Models
Dental Prosthesis
Dentistry
Dentistry -- models
Denture, Complete -- models
Description
Cream-coloured plaster denture model with three implanted teeth and one implant platform; between the teeth and the plaster base there is a pink rubbery substance acting as the gums; there is a slot in the plaster at the back about four centimeters long, and there are handwritten words in black marker on the bottom of the plaster.
Number Of Parts
1
Provenance
Belonged to donor.
Dates
1960
2015
circa 1960-2015
Date Remarks
Based on invention of this type of implants
Material
plaster: cream
metal: grey
porcelain: tan
rubber: pink
ink: black
Inscriptions
Handwritten on bottom of plaster: "Upper incisor // crowns on // Implants // UL cuspid implant // 15".
Permanent Location
Storage Room 0010
0010-B2-9 Row A
Length
6.8 cm
Width
5.9 cm
Height
3.6 cm
Unit Of Measure
centimeters
Copy Type
original
Reference Types
Exhibit, Denturist
Reference Comments
Danielle Arsenault, DD (Denturist)
The Museum of Health Care at Kingston's "Toothless: A History of Dentures" exhibit.
Research Facts
Maxillary implant retained crowns on stone model
Implants: titanium(biocompatible metal) made screw like anchor placed in the jaw bone to support crown, bridge or denture. The dentist will place the implant in a specific place in the jaw after a series of X-rays and CT scans to determind the best placement. After bone remodels around the implant it is safe to use as a functional anchor. Using an implant prior to the bone remodeling process can result in an failing implant. Which then will have to be removed. After implant is safe as a functional anchor: the dentist will place an "abutment" which will attach to crown, bridge or denture. At which time the fabrication of prosthesis will begin.
Maxillary (upper jaw) model: has four implant locators embedded in the stone. This is a precise way of knowing the angle at which the implant is placed.
Porcelain teeth: the three front teeth that are embedded in the pink material are procelin fused to metal crowns. These will be attached to the implant in the patient's mouth. (These crowns became more popular during the 1950s as gold crowns where not aesthetically pleasing. Gold crowns can be dated back to ancient Italy, and was a symbol of wealth)
The pink material is a gingiva (gum) simulated silicone which the dentist or denturist uses to replicate the tissues surrounding the implant to aid in the fabrication of the crown or bridge for esthetics or in dentures for more accurate and comfortable placement of the attachments.
Metal attachment with no tooth: this is the stage prior to the fabrication of the crown, bridge, or denture. The dental technician will now add the attachment choosen by the dentist and will fabricate a crown made of the material of the dentists choosing.
Types of crowns: porcelain fused to metal, porcelain, metal (gold, pallidum, nickel), ceramic. Ceramic crowns are more estheticly pleasing and are more used today than porcelain fused to metal.
Roughly around 1965 was the first titananium implant placement in a human, since then thousands of improvements and placements have been successful. The age of these implants are hard to say, however; it is a more recent case roughly within the last 10-15 years.
This type of implant, the metal screws which connect the denture to the base, were developed by Swedish surgeon Per-Ingvan Branemark in the 1960s, and they were a revolution in the field.
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lower denture model

https://mhc.andornot.com/en/permalink/artifact15274
Dates
2000
2015
circa 2000-2015
Category
Dental
Dentures
Classification
Dental
Dentures
Education
Accession Number
015039004
Description
Grey plaster lower denture model with two implants on one side at the back, which are on a red plaster base; there are words handwritten in black marker on the bottom of the plaster.
  5 images  
Accession Number
015039004
Category
Dental
Dentures
Classification
Dental
Dentures
Education
MeSH Heading
Dental Care
Dental Equipment
Dental Implants
Dental Models
Dental Prosthesis
Dentistry
Dentistry -- models
Denture, Complete -- models
Denture, Complete, Lower
Description
Grey plaster lower denture model with two implants on one side at the back, which are on a red plaster base; there are words handwritten in black marker on the bottom of the plaster.
Number Of Parts
1
Provenance
Belonged to donor.
Dates
2000
2015
circa 2000-2015
Date Remarks
Based on invention of this type of implants and Denturist's remarks.
Material
plaster: grey, red
metal: grey
ink: black, blue
Inscriptions
Handwritten in pen below backside of front teeth and on front of front teeth slightly to the right: "119"; handwritten in black marker on bottom: "Implants on // Back lower teeth // 4.6 // 4.7".
Permanent Location
Storage Room 0010
0010-B2-9 Row A
Length
6.5 cm
Width
5.3 cm
Height
3.2 cm
Unit Of Measure
centimeters
Copy Type
original
Reference Types
Exhibit, Denturist
Reference Comments
Danielle Arsenault, DD (Denturist)
The Museum of Health Care at Kingston's "Toothless: A History of Dentures" exhibit.
Research Facts
Mandibular (lower jaw) implant locators in a die stone model with simulated gingiva (gum) silicone.
As in the previous photos, the "grey" stone is known as die stone. For this model, the implant locators are again covered in silicone to preserve the details of the implant base. These implants could possibly be used for an anchor for a bridge, using the implants and the remaining closest tooth for anchors.
The difference between a bridge and a crown: a bridge will use neighboring teeth for support and a crown gets the support from the tooth it is placed on or an implant.
On the back of the front teeth looks to be a cemented retainer that was picked up in the impression. This is used to keep the teeth in their proper position after braces (orthodontic treatment)
This type of implant, the metal screws which connect the denture to the base, were developed by Swedish surgeon Per-Ingvan Branemark in the 1960s, and they were a revolution in the field.
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dental implant samples

https://mhc.andornot.com/en/permalink/artifact15275
Dates
1960
2015
circa 1960-2015
Category
Dental
Dentures
Classification
Dental
Dentures
Education
Accession Number
015039005
  5 images  
Accession Number
015039005
Category
Dental
Dentures
Classification
Dental
Dentures
Education
MeSH Heading
Dental Care
Dental Equipment
Dental Implants
Dental Models
Dental Prosthesis
Dentistry
Dentistry -- models
Denture, Complete -- models
Denture, Complete, Lower
Number Of Parts
1
Provenance
Belonged to donor.
Dates
1960
2015
circa 1960-2015
Date Remarks
Based on invention of this type of implants
Material
lucite: yellow
metal: brass
ink: black
Inscriptions
Handwritten on bottom: "Samples of male // and female units // (Implants)".
Permanent Location
Storage Room 0010
0010-B1-15
Length
5.2 cm
Width
2.5 cm
Height
4.0 cm
Unit Of Measure
centimeters
Copy Type
original
Reference Types
Exhibit
Reference Comments
The Museum of Health Care at Kingston's "Toothless: A History of Dentures" exhibit.
Research Facts
This type of implant, the metal screws which connect the denture to the base, were developed by Swedish surgeon Per-Ingvan Branemark in the 1960s, and they were a revolution in the field.
Images
Less detail

upper denture model

https://mhc.andornot.com/en/permalink/artifact15276
Dates
2000
2015
circa 2000-2015
Category
Dental
Dentures
Classification
Dental
Dentures
Education
Accession Number
015039006
Description
Upper denture model made of cream-coloured plaster with handwriting in black marker on the bottom; there are six teeth, three on each side, and beside each row of teeth towards the front, there is a metal implant platform which appears as a small metal circle; on the bottom of the plaster there are…
  5 images  
Accession Number
015039006
Category
Dental
Dentures
Classification
Dental
Dentures
Education
MeSH Heading
Dental Care
Dental Equipment
Dental Implants
Dental Models
Dental Prosthesis
Dentistry
Dentistry -- models
Denture, Complete -- models
Description
Upper denture model made of cream-coloured plaster with handwriting in black marker on the bottom; there are six teeth, three on each side, and beside each row of teeth towards the front, there is a metal implant platform which appears as a small metal circle; on the bottom of the plaster there are three divots, one in each corner and one at the front.
Number Of Parts
1
Provenance
Belonged to donor.
Dates
2000
2015
circa 2000-2015
Date Remarks
Based on invention of this type of implants and Denturist's remarks.
Material
plaster: cream
metal: grey
ink: black
Inscriptions
Handwritten on back: "378 // [illegible]"; handwritten on bottom: "Upper Implant // Platforms".
Permanent Location
Storage Room 0010
0010-B2-9 Row A
Length
6.4 cm
Width
4.2 cm
Height
2.8 cm
Unit Of Measure
centimeters
Copy Type
original
Reference Types
Exhibit, Denturist
Reference Comments
Danielle Arsenault, DD (Denturist)
The Museum of Health Care at Kingston's "Toothless: A History of Dentures" exhibit.
Research Facts
Maxillary implant locators in regular stone model.
The model is made of regular stone, which is an adequate material for fabrication of an implant retained prosthesis.
In the model they have scribed a "post dam or finishing line" we do this to the model to know where the denture will end as well as compensation for the acrylic material shrinking while the acrylic is processing.
This looks like it might become an transitional/ temporary denture, which is made for the use of a few months to a year while the implant bone growth is occuring. After the necessary healing time has passed, a new denture or in this case most likely a bridge will be fabricated for a more permanent and aesthetic solution.
This type of implant, the metal screws which connect the denture to the base, were developed by Swedish surgeon Per-Ingvan Branemark in the 1960s, and they were a revolution in the field.
Images
Less detail
Dates
1850
1900
1850-1900
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Dental
Dentures
Classification
Dental
Accession Number
010020077
Description
Lower denture; white porcelain teeth affixed to curved silver metal mould of gums
  3 images  
Accession Number
010020077
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Dental
Dentures
Classification
Dental
MeSH Heading
Dental Prosthesis
Denture, Complete, Lower
Description
Lower denture; white porcelain teeth affixed to curved silver metal mould of gums
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Dates
1850
1900
1850-1900
Material
metal: silver
porcelain: white
Permanent Location
Storage Room 0010
0010-B
Dimension Notes
Length 6.4 cm x Width 4.7 cm x Depth 2.0 cm
Condition Remarks
Small scratches on metal
Copy Type
Original
Reference Types
Internet
JPG
Reference Comments
"British Dental Association Museum" website
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 would have been quite cumbersome in the mouth, considering the weight of the metal; in 1864 the Goodyear Dental Vulcanite Co. was founded in the United States, producing dentures made with hardened rubber and helping them to become cheaper to make, lighter, easier to use, and thus more popular; they became more readily available once the Goodyear patent expired in the 1880s
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9 records – page 1 of 1.