Implant Dentures – All-on-4

Implants – All-on-4 Implant Dentures

What is All-on-4?

Dentists and Prosthodontists have been making implant dentures for many years. The compromise between total cost and number of individual implants required to mechanically stabilize a Fixed Denture Prosthesis has now been calculated. It is 4 implants and therefore, all of the denture is fixed to 4 implants. There are always exceptions for example if a patient has soft bone and is a Bruxer (bites extremely heavily) six implants are often required

The Ultimate Hygienic Implant Denture System is both ‘fixed and removable’ and is called SynCone® 5°. This denture is made from either acrylic resin, internally reinforced with cast metal or Prettau Zirconia with aesthetic porcelain facings.

All-on-4 Implant Dentures are made from the Ultimate Hygienic and Aesthetic material – Prettau Zirconia with Porcelain facings. Made right here in Brisbane, Australia by Ceramist (Technician) Werner Sauer located on Park Road, Milton.

The contemporary implant dentures All-on-4 system is ‘fixed’, and only removable by the dentist making it far less hygienic than the ‘fixed and removable’ system that is SynCone® 5°.

Please view the PDF of the Ultimate Hygienic Implant Denture System. Take a look at the examples compiled below of the different processes and procedures.

The Ultimate HYGIENIC Implant Denture – All-on-4 SynCone® 5°

Four SynCone abutments are suitable for the Ultimate Hygienic Implant Denture.

The internal view of 4 gold caps in a SynCone Implant Denture. The fit of these dentures is by friction, similar to the fit of a matchbox lid. That is, ‘Fixed’, stable and retentive but ‘Removable’ and therefore immediately hygienic. This is called a Fixed-Removable prosthesis.

Biting view of the implant denture made of acrylic resin.

Finished case of the lower implant denture but unfinished upper teeth.

Six implant healing caps in the upper arch and four in the lower arch.

Six implant healing caps in the upper arch.

Four implant healing caps in the lower arch.

Internal view of SynCone lower implant denture made of acrylic resin.

Internal view of SynCone upper implant denture.

This implant denture is made from the ultimate in hygienic and aesthetic material called Prettau Zirconia, which is a super-strong ceramic. Prettau Zirconia can be used for Fixed and Fixed/Removable prostheses. This particular denture shown is a fixed, screw-retained implant denture that can only be removed by the dentist via the four access holes. (Ceramist, Werner Sauer, Brisbane)

External view showing another All-on-4 screw retained Prettau Zirconia prosthesis. (Ceramist, Werner Sauer, Brisbane)

Internal view showing the highly glazed hygienic surface of Prettau Zirconia. (Ceramist, Werner Sauer, Brisbane)

Front view showing the amazing aesthetics that is possible with the addition of porcelain to the front of the zirconia. (Ceramist, Werner Sauer, Brisbane)

Biting surface view with four access holes showing minimum coverage of the palate. (Ceramist, Werner Sauer, Brisbane)

This is a substructural titanium base for an All-on-4 Prettau Zirconia implant denture for ultimate strength for a bruxism patient. (Ceramist, Werner Sauer, Brisbane)

This is a substructural titanium base for an All-on-4 Prettau Zirconia implant denture for ultimate strength for a bruxism patient. (Ceramist, Werner Sauer, Brisbane)

This is the super structure made from Prettau Zirconia that will be HotBonded to the titanium base. (Ceramist, Werner Sauer, Brisbane)

These abutments are multi-directional used for securing the All-on-4 zirconia/titanium Prettau Zirconia implant denture. (Ceramist, Werner Sauer, Brisbane)

The undersurface of the implant denture in titanium. (Ceramist, Werner Sauer, Brisbane)

The two parts of the implant denture are shown prior to HotBonding. (Ceramist, Werner Sauer, Brisbane)

The HotBonded titanium/zirconia All-on-4 Prettau Zirconia implant denture. (Ceramist, Werner Sauer, Brisbane)

The fitting surface of the All-on-4 Prettau Zirconia implant denture titanium base has been anodized for optimal hygiene. (Ceramist, Werner Sauer, Brisbane)

Front view of the zirconia shows optimal aesthetics because it has been layered with porcelain at the front of all the teeth. Completed All-on-4 Prettau Zirconia implant denture has optimal aesthetics, hygiene and strength. (Ceramist, Werner Sauer, Brisbane)

This is a photograph of two zirconia bars attached to All-on-4 implants to achieve a removable Prettau Zirconia implant denture. (Ceramist, Werner Sauer, Brisbane)

Internal view of the Prettau Zirconia All-on-4 implant denture showing the intricate fit required to the previously shown bars. (Ceramist, Werner Sauer, Brisbane)

Articulator duplicating jaw movement with upper and lower plaster models of implants for implant dentures. (Ceramist, Werner Sauer, Brisbane)

Plaster model of the upper jaw with six implant abutments for All-on-6 implant denture because of bone not dense and the patient is a ‘huge biter’ and bruxer. (Ceramist, Werner Sauer, Brisbane)

Acrylic resin implant dentures designed with Characterization of teeth and gums to appear natural looking. (Ceramist, Werner Sauer, Brisbane)

Biting view of the upper implant denture showing two access holes for the dentist to create a fixed prosthesis. These holes will be filled at a later date with tooth coloured filling material. (Ceramist, Werner Sauer, Brisbane)

Front view of the implant dentures showing a very natural looking and characterized teeth and gums (Ceramist, Werner Sauer, Brisbane)

The ULTIMATE implant prosthesis is called an “Implant Crown Pair Prosthesis”. This was designed by Dr Michael Darveniza and published in the Australian Dental Journal in 1995. click here

The ULTIMATE implant prosthesis is called an “Implant Crown Pair Prosthesis”. This was designed by Dr Michael Darveniza and published in the Australian Dental Journal 1995. There are 10 implants in the upper arch and 10 in the lower arch. This is the ultimate alternative to implant dentures. However, it is only appropriate when the patient has NOT lost a lot of bone and gum from their jaw bone. An implant denture replaces gum and bone mass and hence supports the lips and cheeks. Please click here for further information.

Therefore there are 5 pairs of 2 implant crowns splinted together in the upper arch. The two front teeth are joined, followed by the lateral incisor and canine and the first premolar and first molar. Splinting or pairing crowns is for strength and longevity purposes. Please click the photo for further information.

Other Types of Implant Denture

This photograph shows only two implants and the abutments are suitable for o-ring retentive attachments.

The internal view of the denture shows black o-rings which can be replaced when they wear out.

Final view of upper and lower acrylic resin implant dentures.

This photograph shows two implants with internal retentive mechanism for the abutment.

This photograph shows the two implants with abutments.

The locating attachment with o-rings for the denture.

The internal view of the implant denture shows the inside view of the locating attachments with o-rings, these can be replaced when they wear out.

Final view of upper and lower acrylic resin implant dentures.

This is a retentive gold bar linking two implants in an attempt to make the implant denture more secure.

Close up view of the gold bar on the plaster model.

The internal surface of the implant denture with a retentive gold sleeve to fit on a gold bar.

Intraoral view of the gold bar secured to two implants.