Thursday, November 23rd 2017 2:11AM EST

Porcelain Fused to Metal: Non-Shouldered Abutment

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Temporization with Emergence Cuff

1. Choose the widest abutment that supports but does not encroach upon the interdental papillae and whose height can satisfy all occlusal considerations. Seat the abutment with its corresponding emergence cuff into the implant well. Abutment diameter dictates the diameter of the emergence cuff.

2. Incorporate the emergence cuff into the transitional crown such that it becomes the apical third of the transitional crown. The circumferential groove on the emergence cuff allows the transitional crown material to mechanically lock to the emergence cuff. The emergence cuff may be easily modified to achieve a desired sulcus contour. Trim and polish the transitional crown prior to cementing it to the abutment with temporary cement.

3. Allow the soft tissue to mature for at least 6 weeks after a stage two surgical uncovering prior to making an impression.

4.Remove the transitional crown with the emergence cuff before making the final impression.

5. Make a direct impression of the modified or unmodified abutment and pour a conventional stone model. The laboratory procedures are the same as for the fabrication of a crown or fixed bridge for a natural tooth.

6. After any needed occlusal, interproximal, or aesthetic contouring, cement the crown conventionally with minimal cement at the cervical aspect of the crown to avoid adverse hydraulic forces. Care must be taken to remove all extraneous cement.

 

 

Measurement Guide

The design of the Bicon abutment system is such that the hemispherical base of the abutment does not sit flush with the neck of the implant. By design, there is a space below the abutment post when the abutment is fully seated. When viewing this on a radiograph, it can be seen as a radiolucency. Please note that the post of any abutment may not be modified. Altering the abutment post in any manner or using a cementing medium will affect the frictional fit of the locking taper resulting in a potentially non-retentive abutment. The following diagrams depict the final seating of the 2.0mm and 3.0mm non-shouldered abutments as well as the method for measuring each abutment.
The width of the abutment is measured at the widest part of the abutment. The height of the non-shouldered abutment is measured from the widest portion to the occlusal aspect of the abutment. The abutment post height is constant and is not variable. The width of the abutment is measured at the widest part of the abutment. The height of the non-shouldered abutment is measured from the widest portion to the occlusal aspect of the abutment. The abutment post height is constant and is not variable.

 

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