Digital workflow for designing an interim implant-supported restoration with an optimal emergence profile in an open-source software program

Elsevier

Available online 6 December 2022

The Journal of Prosthetic DentistryAuthor links open overlay panelAbstract

The esthetics and emergence profile design of implant-supported restorations in the anterior zone can be challenging. This dental technique describes a digital approach to designing an optimal emergence profile from the implant head to the definitive prosthetic volume with facial cutback for an esthetic implant-supported interim crown. A printed interim implant-supported restoration with an adequate emergence profile and a facial cutback for composite resin layering is obtained.

Section snippetsTechnique1.

Obtain a digital scan of the patient with an intraoral scanner (IOS) (TRIOS; 3Shape A/S) and export the standard tessellation language (STL) files. Import the STL files into an open-source CAD program (Autodesk Meshmixer 3.5; Autodesk Inc) and create a wax pattern. Import the initial scans and the waxing (Fig. 1A, B) into an open-source implant planning software program (BlueSky-Plan 4; BlueSky Bio).

2.

Virtually plan the prosthetically driven implant placement in the 3D optimal position according

Discussion

Placement of an immediate implant-supported interim prosthesis can be challenging. Different steps must be followed to optimize the esthetic and functional outcome.4,16 With the availability of new technologies, these steps have been modified to decrease the chair time and to improve the outcome. For example, the interim crown can be designed by using the cone beam computed tomography (CBCT) image obtained for the implant planning to replicate the shape of the tooth to be extracted.12,13

The

Summary

The described dental technique is a modification of the registration technique with a conventional approach. The digital planning and design of the interim crown including its transmucosal part reduces the time dedicated to conforming the emergence profile based on the EBC concept and achieves a more predictable result according to the original planning. In patients with high esthetic demands, the cutback for composite resin layering technique is a good option. By digitally designing the

CRediT authorship contribution statement

Pablo Hernández-Margarit: Conceptualization, Methodology, Writing. Ricardo Palacios-Bañuelos: Supervision, Writing – review & editing. Miguel Roig: Writing – review & editing. Pablo Altuna: Writing – review & editing. Álvaro Blasi: Supervision, Writing – review & editing, All authors have made substantial contributions to conception and design of the dental dechnique.

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© 2022 by the Editorial Council for the Journal of Prosthetic Dentistry.

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