Teeth Replacement Options and Zirconia as a Long-term Solution

Aesthetically-sound teeth replacement solutions — implanted and immediately loaded — are the specialty of the All-On-4 Clinics. The results are comfortable and functional, and include affordable upgrades to Porcelain and Zirconia for long-term convenience.


Immediately after surgery, the replacement teeth made of highly resilient acrylic are fitted into the implants. This is the sole choice for patients wanting immediate results, as the processing of the acrylic makes it conducive to All-On-4’s quick turnaround protocol. The bridge is designed to provide optimum function and aesthetics, and although it is constructed with an internal metal bar support it may not last a lifetime. Normal wear and tear on the acrylic teeth dictates that they must be replaced once every three to five years.

This is not always the case, however, as some clients have been known to wear their original prosthetic teeth for up to seven years before needing to replace them. The titanium implants are permanent, and only the actual acrylic teeth are the components that get replaced with the All-On-4 method. This is a simple, uncomplicated procedure requiring no additional surgery. Patients who grind their teeth or bite and chew with exceptional force may find that the acrylic material can not tolerate the stress created by their normal oral function. In this case, an upgrade to Zirconia may be in order when the time comes to replace the original prosthesis.




The All-On-4 method has revolutionised the teeth replacement industry, allowing patients to achieve permanent dental implants and replacement teeth within just two to three days.

The innovative clinical procedures and protocols of the All-On-4 method are what facilitate the immediacy of the process. The acrylic bridges are constructed on-site in the clinic laboratory in a process which is completed in just one day. This enables almost immediate restoration of oral function and enhanced aesthetics, although the natural aging of the acrylic material means that this aesthetic appeal can diminish over time. Replacement of the acrylic teeth generally happens every five years unless fractures and heavy signs of wear appear earlier. As the bite force is greatly improved by the dental implants, it may exceed the durability of the replacement teeth, causing this kind of premature erosion.

The photos here demonstrate the high-impact acrylic bridge in normal light (left), and an X-ray image of the implants (right).


Al-On-4 Clinics offer improved longevity and durability when the need arises. It is important that the immediately fitted acrylic teeth are monitored intermittently in the period just after restoration to determine if stronger long-term solutions will be necessary. Sometimes the base structure will need reinforcing, while other times more durable prosthetic teeth are in order.

Earlier dental methods of strengthening and reinforcing utilised a gold substructure for supporting the teeth. Today, modern dental technology uses titanium or zirconia substructures for support. These substructures are precision milled and are far more biocompatible than gold, allowing for improved tissue health and better integration with the implants. Acrylic teeth can be supported by titanium substructures while ceramic teeth can be directly layered upon zirconia substructures for long-term aesthetics and lighter, more improved transmission.

There are several options to consider when the time comes to replace the acrylic bridge. The body or frame of the new bridge can be constructed out of zirconia or titanium, while the new prosthetic teeth can be made of porcelain or acrylic. As always with acrylic teeth, it is important to consider the inevitable ageing and wear and tear over time.

Below: The photo on the right shows the appearance of acrylic teeth set in a milled titanium frame, while the image on the left shows what the assembly looks like on an X-ray.


Below: The photo on the left shows what porcelain teeth set in a milled titanium frame (PFM) look like, while the image on the right shoes how the assembly looks on a X-ray. Note: Image on left was taken before application of the gum material.


Unlike acrylic, zirconia is a material with properties similar to those found in steel while existing in a coulour that makes it ideal for restorations with a highly aesthetic appeal. Oral plaque does not bond to zirconia at the same rate it does to acrylic, making it the more hygienic of choices for long-term appeal. Also, the material is highly biocompatible and quite dense unlike the very porous constitution of acrylic. Density as opposed to porousness means a cleaner, fresher smelling oral restoration as mouth fluids do no seep into the zirconia.

Titanium frames, while effective do not offer the same range of aesthetic characterisation experienced with porcelain frames. Porcelain can be directly fitted onto the zirconia providing optimal aesthetic capabilities.

Below: The photo on the right shows the physical appearance of a milled zirconia bridge while the image on the left shows what the assembly looks like on an X-ray.

All-On-4_Upgrades_ZIRCONIA (1)

The zirconia prosthesis looks and feels like natural teeth in regard to weight and texture, and is more likely to perform better than acrylic over a longer period of time. When creating the bridge, a wax mould is taken of the inside of your mouth, then used as a template to CAD-mill the bridge to fit every individual nuance of your mouth. This process allows All-On-4 clinicians to fine-tune the prosthesis for optimal aesthetics and arrangement. High aesthetics can be achieved from a monolithic block by using modern techniques to colour the material after it has been milled. This provides optimal durability without the layering of any other materials.



  • Longer Lasting Prosthetic Teeth
  • Optimal Comfort
  • Ergonomic and Naturalistic Feel
  • Long-lasting Aesthetics
  • Better Hygiene

All-On-4 Clinic New Zealand Information Video’s

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