Dual AO6 with subsequent replacement of prosthesis to zirconia 7 years post op

Dr. G. Rafalovitz

Main complaint

In 2013 patient complained of discomfort due to full upper and partial lower removable dentures. patients asked for a fixed restoration.

Medical history

• Female, was 67 years old in 2013.
• Generally healthy, allergic to Resprim (sulpha).

Case description

• In 2013, 3 remaining teeth in the lower jaw were extracted and dual, upper and lower AO6 were performed.
• It was immediately temporarily loaded within 24 hours.
• 4 months later, once all implants were osseointegrated and soft tissue stabled, restoration was replaced by definite restoration.
• The restoration was a screw-retained hybrid prosthesis (i.e. made of composite and acrylic reinforced with a cast metal framework).

• Periodic checkups showed stable bone level.
• The patient reported great satisfaction both with function and esthetics.

• In 2020, after 7 years of function, the hybrid prosthesis showed wear and tear, such as some erosion and slight discoloration.
• It was decided to replace the prosthesis with a new monolithic screw-retained zirconia restoration.

• Upper jaw implants were scanned against the old lower restoration and a new upper restoration was created. Once the upper restoration was put in place, lower implants were scanned against it and a new lower restoration was created.

• The end result was a new set of upper and lower screw-retained monolithic zirconia restoration. Digital workflow allowed for accurate, esthetic and quick results.

Products & materials used:

• Implants:

12 AB Dental devices i5 implants were used right to left:

Upper 4.2/16, 4.2/13, 4.2/13, 4.2/13, 4.2/13, 4.2/11.5

Lower 4.2/11.5, 4.2/13, 4/2/13, 4.2/14, 4/2/13, 4.2/11.5

• Prosthetic products:

In 2013, 4 upper mesial implants (14,12,22,24) were fitted with P14 multi-units and the rest of the implants with P12 flat connection abutments.

• In 2020 the P12 in the upper distal implants (16,26) were replaced with a P64 multi-unit.

Scan posts: regular implant-level scan posts were used with all lower implants.

P14 scan posts were used with the 4 upper mesial implants (14,12,22,24) and a P64 scan post with the upper distal implant (16,26).

Appropriate Ti-bases were used.

Dental lab:

Mr. Shimon Soval

Smile tec dental lab