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The All-on-4 prosthesis — the visible bridge of teeth attached to the four implants — is not a single material category. It is fabricated in different materials with genuinely different clinical properties, and the choice between them affects aesthetics, longevity, bite force transmission, and what maintenance is required.
Provisional Acrylic Bridge
In most All-on-4 protocols at Dazzle, the provisional bridge placed on the day of surgery is a reinforced acrylic prosthesis. Acrylic is used at this stage because it is lighter than zirconia (reducing load on healing implants), can be adjusted chairside if the bite settles differently during healing, and provides a reasonable aesthetic result. The provisional is not the restoration patients will live with long-term.
Acrylic-on-Titanium Framework (Permanent Acrylic Bridge)
The first category of permanent prosthesis is an acrylic tooth arrangement supported by a milled titanium framework. The titanium provides structural rigidity; the acrylic teeth provide aesthetics. Advantages: lighter weight than monolithic zirconia, easier to repair (acrylic teeth can be replaced without remaking the entire prosthesis), lower cost. Limitations: acrylic teeth wear and stain more than ceramic; the prosthesis typically requires replacement or significant refurbishment at 8–12 years.
Monolithic Zirconia Bridge
Zirconia is the premium material for All-on-4 permanent prostheses. Milled from a solid block of zirconia in our in-house digital laboratory, the bridge is a single-piece ceramic restoration of exceptional durability. Advantages: natural-looking translucency, stain-resistant, flexural strength approximately 1000–1200 MPa, realistic lifespan of 15–20 years. For the material comparison between zirconia and other prosthetic options, see our zirconia vs E.max guide.
Which Material Does Dazzle Recommend?
For patients without significant budget constraints, zirconia is the preferred permanent prosthesis material. The aesthetics are superior, the longevity is greater, and the maintenance burden over 15–20 years is lower despite the higher upfront cost. For patients managing cost, or where specific bite force or repair considerations favour the hybrid approach, acrylic-on-titanium is a clinically sound option with appropriate expectations for the replacement timeline.
FAQs
Q1: Can I choose the material after surgery?
Yes. The permanent prosthesis selection is finalised at the final impression appointment, which occurs after osseointegration is confirmed at 3–6 months. Patients have time between surgery and the final prosthesis appointment to revisit the material discussion.
Q2: Does zirconia look natural?
Modern multi-layer zirconia can closely replicate the translucency gradient and subtle colour variation of natural teeth. Your clinician will discuss realistic aesthetic expectations for your specific case.
Q3: How much heavier is a zirconia bridge than acrylic?
A full-arch zirconia bridge is typically 30–50% heavier than a comparable acrylic-on-titanium hybrid. In practice, patients adapt to this weight difference quickly and rarely find it significant after the first few weeks.
Q4: Can the All-on-4 bridge be whitened?
No. Ceramic and acrylic prosthetic materials do not respond to bleaching agents. The shade is determined at the design stage. If you are planning teeth whitening, it should be completed before the final prosthesis shade is selected.
