All-on-4, acrylic or or zirconia porcelain?

Gone are the days of sacrificing top-tier beauty, precision, and price in order to gain the strength offered from full-contour Zirconia restorations. We’d like to introduce you to the future of highly aesthetic Zirconia bridges, The Zirkonzahn Prettau bridge. Prettau Zirconia is far more translucent than Zirconias of the past. Combine this with staining techniques applied by world class dental technicians, and you’ll see a bridge the likes of which were unimaginable in regards to strength and aesthetics. By eliminating veneered porcelain, you are not only sure to avoid chipping, but also eliminating wear on opposing teeth. Whether you opt for the Prettau bridge or our in-house milled PMMA/Titanium bridge, our experience allows for an even higher level of predictability for your restoration.

The acrylic option is usually for a more budget conscious person, but what isn't often discussed is durability.  Monolithic zirconium doesn't chip like a layered feldspathic porcelain but also is not porous like acrylic.  After 8-10 years, the acrylic tends to harbor a smell/taste that requires replacement in order to remove.  Zirconium does not.  Also, the acrylic will wear out over time, faster if chewing against porcelain or natural teeth.  Some places design the case with porcelain on top teeth and acrylic on the lowers, knowing that in 10 years the lowers will be replaced due to wearing out (similar to how tires become "bald" the teeth become very smooth and worn down).

There are two good options for prosthesis after All-on-4 implant placement. Both prosthetic options has its own advantages and disadvantages. It's better the clinician takes the final call on what is suitable for you.
Acrylic wrap around is very lighter and cosmetically appealing too, but it wears out slowly over a period of 5-10 years and needs only the acrylic part replacement, which isn't expensive at all. The titanium framework inside doesn't need replacement. People with poor bone quality, shorter implants and very elderly, I personally suggest acrylic hybrid as an option.
Zirconium porcelain prosthesis is definitely stronger and long lasting. They look natural too, but they are heavier, ceramic chip-offs do happen and it can also cause wearing-off of the opposing natural teeth or acrylic teeth many a times.But my personal suggestion is that for people who are more concerned about aesthetics and also younger age group should opt for this Zirconium Ceramic option.