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Laboratory Techniques: Implant Construction

This series of images shows the initial steps taken in constructing an implant restoration: Soft tissue duplication, abutment selection, and corrective angulation procedures.

 

The final steps taken in constructing an implant restoration (as shown in these images) are:
Constructing a metal alloy framework. This must comply to the aesthetics of the remaining teeth, and to the opposing dentition, whilst working within the parameters of the implant placements

 

Impression with implant copings.

Impression

An implant impression with pick-up copings in situ. This is cleaned and prepared for model casting.

Model with replicas in place.

Cast Model

A cast working model with soft tissue and replicas in place. The replicas (or analogues) replicate the exact position of the implants in the patients jaw.

Model with abutments fitted.

Abutments

Angulated abutments are screwed onto model. These are all the same length so they must be adjusted to suit.

Checking abutment anglulation.

Correct Angle of Abutments

Here we see the proposed corrective anglulation of the abutments.

Trimming abutments.

Trim Abutments

The abutments are trimmed down to a predetermined height using special burrs.

Mock-up model for planning.

Mock Up

A wax mock up of final restoration is prepared to further assess the placement of the ceramic dentition.

Further adjustment of abutments.

Trim Abutments

The mock-up demonstrated that further adjustments are necessary in order to allow for an aesthetic result. The abutments are adjusted accordingly.

Wax preparation for framework.

Wax Preparation

A wax bridge framework or pattern is sculpted by hand. This will form the metal cast for the substructure. There must be sufficient room allowed for the layers of ceramic material that will be added later.

Framework cast and fitted.

Cast Metal Framework

The metal alloy framework is cast and then screwed into place for inspection of fit.

Framework prepared for layering of porcelain.

Layer Porcelain

The metal alloy framework is prepared for application of ceramic overlay. Many layers are applied and hardened to achieve that realistic look.

Polished restoration fitted in place on the model.

Prepare Final Finish

A final glaze is applied and the restoration is polished and fitted back on the model. Note here the soft tissue replica is not in place but some gingiva colouring has been applied between the teeth to give an aesthetic result.

Finished restoration with opposing upper model in place.

Finished Restoration

The finished implant restoration with its opposing model in place.

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