Immediate loading on Multi-Unit Abutment

Clinical Cases

A patient in their fifties lost all their upper teeth due to poor dental hygiene over a long period of time. The patient came in after their tooth number 21 (8) broke and fell out. In the first phase, the upper arch was restored – extractions were performed on the upper arch, implants were placed, and the most suitable multi-units were chosen. For the anterior area, four angled multi-units were selected. As can be seen, the screw channels are parallel and oriented on the occlusal plane after correction. The support of the multi-unit helps predict the angle of the future screw channel. Each angled multi-unit is equipped with such a support.

Parallel positioning of the screw channel after angle correction.

Insertion of the scanbody and impression taking.

Evaluation

The V-type has a smaller cone and the hexagon is inside the multi-unit, which is a more suitable option when there is not enough interocclusal space and gives more thickness to the zirconia, thus reinforcing the crown. The D-type has a larger cone and an angled version with the same sleeve.

To determine the VDO (Vertical Dimension of Occlusion) for the patient, impressions were taken twice: the first time before extractions and the second time with the impression abutments. The second impression was placed on top of the first one.