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…
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
Belonged to donor.
Based on invention of this type of implants
Handwritten on bottom of plaster: "Upper incisor // crowns on // Implants // UL cuspid implant // 15".
Storage Room 0010
0010-B2-9 Row A
Unit Of Measure
Danielle Arsenault, DD (Denturist)
The Museum of Health Care at Kingston's "Toothless: A History of Dentures" exhibit.
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.