Replacing Acrylic Bridges - Do They Typically Only Last 6-8 Years?

Question

Several years ago, I had all-on-4 (actually all-on-6) of uppers, the bottom teeth are my teeth. The bridge was acrylic, the procedure was stressful but it went very well and overall while expensive it was all worth it. My gums and implants have been exceptionally maintained and there have been no cracks or any troubles at all. The dental center mentioned that they see wear on the bridge and I’ll need to replace the bridge. They no longer do acrylic bridges only zirconium. While I expected to replace them in the future, needing another bridge less than 7 years later seems very short for how expensive this procedure is, and also how expensive the new bridge would be. Is this a normal timeline to replace acrylic bridge? Do they typically only last 6-8 years and then you need to spend another huge amount of money on a new bridge. Are there other options to the zirconium that are affordable and last long.

Prashant Nanda, MDS, FICOI · Answer

Your experience is quite typical. Acrylic (acrylic teeth on a metal or reinforced frame) full-arch bridges often need replacing or significant refurbishment within something like 5 to 10 years. Acrylic is softer than natural teeth or ceramic, so the teeth wear, flatten and can stain, especially when they bite against natural lower teeth as yours do. The fact that your implants and gums are healthy after seven years is the important part: the foundation is sound, and only the "superstructure" is wearing out.
Options to discuss:
1. Refurbish rather than replace. If the underlying frame is in good condition, many labs can remove the worn acrylic teeth and process new ones onto the existing frame. This is usually considerably cheaper than a new bridge. Ask your dental centre whether this is possible, or ask another clinic that still works with acrylic.
2. A new acrylic or composite bridge. Still an option at many clinics. It is more affordable up front, easier to repair, and kinder to opposing natural teeth, but it will need refreshing again in future.
3. Monolithic zirconia. Much more wear- and stain-resistant and likely to last considerably longer, but more expensive and harder to repair if it chips. Against natural lower teeth, it must be well polished and the bite carefully adjusted.
4. Hybrid designs. A milled titanium or zirconia frame with individual ceramic or composite crowns on it, so a single damaged tooth can be replaced without remaking the whole bridge.
When comparing quotes, ask about the expected lifespan, how repairs are handled, and what maintenance is included. Whatever you choose, a night guard and continued maintenance visits will extend its life. Since your foundation is so well maintained, it is worth taking time to get a couple of opinions before deciding.

Replacing Acrylic Bridges - Do They Typically Only Last 6-8 Years?

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