Is zirconia bridge too heavy for 4 upper implants?

A zirconia bridge is generally not too heavy for four upper implants, but it depends on a few factors:
1. Implant positioning: The implants need to be properly placed to distribute the load evenly.2. Implant quality and strength: High-quality implants can handle the stress of a zirconia bridge. Zirconia is strong and durable but also heavier than other materials like acrylic.3. Bone density and volume: If the bone around the implants is strong and sufficient, it will better support the bridge.4. Design of the bridge: The size, length, and design of the bridge can influence the pressure placed on the implants.
If the implants are placed correctly and the bone is healthy, a zirconia bridge should not be too heavy for four upper implants. However, it’s important to consult with your dentist or oral surgeon to ensure that your specific situation is suitable.

Zirconia implant bridges are being used more and more for All-on-4 implant restorations, especially in the upper arch. They are heavy in comparison to titanium frameworks with acrylic teeth, but are strong and durable.

Gravity is not an issue, so the weight isn't the problem. It comes down to the bite forces and where bone is available, so the location of the implants may not be ideal for the load (bite forces). This is why many providers will do 6 or more implants instead of just 4, or use very long implants to handle these forces.