Steps for Denture Duplication — A Visual Essay

Denture duplication is a very common process in implant prosthetics. It can serve the treating team as either:

  • a customized impression tray
  • a radiographic template
  • a surgical template

This visual essay will walk the reader through the basic steps of denture duplication. 

image
Original denture is cleaned and ready to go for duplication.
image 1
Duplicating flask
how to duplicate dentures
Duplicating flask
image 3
Duplicating flask
image 4
Alginate is placed in the lower half of the duplicating flask.
image 5
The denture is then submerged so that the denture borders and intaglio aspect is uncovered, letting the alginate set.
image 6
Alginate is then carried to the counterpart.
image 7
The duplicating flask is then closed so that the intaglio is then copied in the counterpart.
image 8
The denture is removed and denture indentation can now be seen in both parts of the flask.
image 9
The denture is removed and denture indentation can now be seen in both parts of the flask.
image 10
Clear acrylic is then syringed into the impression aspect.
image 11
The flask is then closed to ensure that the acrylic copies all details of the impressed denture.
image 12
As the acrylic sets, the flask is opened and inspected to see that the duplication was done successfully.
image 13
The duplicate is then removed and flash is evident in the periphery of the denture.
image 14
Using a laboratory fissure bur, the flash is then removed.
image 15
Once all the excess contours are trimmed, the duplicate is polished in a rag wheel
with pumice powder and water.
image 16
Facial aspect of the denture and duplicate.
image 17
Lateral aspects of the denture and the duplicate.

A step-by-step technique of the duplication of an existing denture has been shown. This is a straightforward process that enables the restorative dentist to have a quick device that may serve as either a customized tray or a new denture fabrication, a radiographic template or a surgical template that may provide the surgeon with bone reduction parameters and ideal implant placement parameters.

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By: Ricardo Mitrani
Date: April 15, 2018


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