2-Step Protocol for Digital Denture Fabrication
There are many proponents of the 2-step digital denture fabrication protocol. These protocols promote the elimination of the try-in procedure which may result in poor esthetics and patient dissatisfaction. The 2-step protocol requires considerable experience in the clinical and laboratory aspects of digital workflow.
The 2-step protocol is not suited for all patients; however, it can be successfully used for patients with immediate/transitional dentures that need an improvement in fit but have acceptable esthetics, occlusion, and occlusal vertical dimension with the existing prostheses. During the first appointment:
❒ The interocclusal record is registered.
❒ The intaglio surface of the denture is relieved.
❒ The interocclusal record is placed in the mouth and a functional reline impression of the existing prosthesis is made with soft lining material/vinyl polysiloxane (VPS) impression material.
❒ The denture (with the functional impression) and the records are scanned with an IOS scanner (Figure 23).
Figure 23. The denture (with the functional impression) and the
records are scanned with an IOS scanner.
Image courtesy Dr. Goodacre
❒ The data is electronically sent to the laboratory for printing/milling of the new denture.
During the second appointment, the milled/printed dentures are adjusted, finished, polished, and placed in the patient’s mouth.