Four solution approaches for aesthetic restorations on divergent implants

Four solution approaches for aesthetic restorations on divergent implantsAn overview of new implant components and working techniques to correct screw channels oriented towards the vestibular or palatal area – also in cases of complete edentulism.

This article addresses new implant components and working techniques available in the Zirkonzahn.Modellier design software. This permits the production of aesthetic restoration in cases of implants oriented towards the vestibular or palatal area.

New implants components: titanium bases K80 (ASC) and individual Raw-Abutments

The new Titanium Bases K80 Angled Screw Channel combine two advantages in one product. On the one hand, the shaft height can be shortened individually according to the patient’s specific tooth height.

On the other hand, these titanium bases are provided with a side opening permitting to tilt the access channel individually between 0°-30° according to the implant inclination.

This permits to compensate for non-optimal implant positions with no impact on the final aesthetic result. They are available with either conical or parallel shafts as well as with or without an anti-rotation device according to the restorative indication.

Raw-Abutments, made of a high-quality medical titanium alloy (Ti-6Al-4V ELI according to ASTM F136 and DIN EN ISO 5832-3), are prefabricated titanium abutment blanks conceived for the production of individual abutments. Their industrially prefabricated implant connection ensures high precision and fit accuracy.

In cases of edentulous maxilla with divergent implants, the design software permits to generate a consistent insertion direction for all abutments, designing the abutment geometry individually. In this way, it is possible to prevent the vestibular orientation of the screw channels.

Titanium Bases k80 Angled Scew Channel (ASC)
Example of a restoration on individual Raw-Abutments
Example of a restoration on individual Raw-Abutments

The Bartplatte and the Double Screw Bar: new working techniques for highly stable, bar-supported rehabilitations in complex cases with edentulism

The Bartplatte permits the creation of aesthetic full arches on palatal-inclined implants. Through the advanced function of the Zirkonzahn.Modellier software, the primary structure can be adapted geometrically to the anatomy of the superstructure by means of the free-forming function. Further bar retentions can then be generated with the Attachment module before milling the bar.

The Double Screw Bar, on the other hand, is a special technique consisting in the integration of additional screws in the bar design: the innovative concept is that the bar is screwed to the implants and the superstructure to the bar.

Example of a Bartplatte

Example of a BartplatteExample of a Bartplatte

Examples of double screw metal bars
Examples of double screw metal bars

This avoids non-aesthetic vestibular channels especially in the anterior region and, at the same time, improves post-operative maintenance and hygiene. The design software is provided with a new function to perform the Double Screw Metal technique.

This is where the user can visualise the screw positions and generate the screw threads within the bar design.

Through the 3D rendering, it is possible to identify the optimal position of the screw channel in the primary structure, as well as the ideal fit of the screw head in the superstructure.

The digital screws are provided with several discs indicating the ideal insertion depth, in order to avoid any ruptures in the zirconia framework. The software function also permits the design of the channel thread, which is milled using special burs.

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