A translucent rod made of glass or quartz fibers embedded in a resin matrix. It is cemented into the canal of a tooth that has undergone Root Canal Treatment.

Why It Matters

After a root canal, a tooth is often hollow and brittle. If too much natural structure is missing, a filling cannot stay in place. The fiber post acts as an anchor (similar to rebar in concrete) to hold the filling material (the Core), which then supports the final Crown.

Clinical Details

• Flexibility: Unlike older metal posts, fiber posts have a "modulus of elasticity" similar to natural dentin. This allows them to flex slightly under pressure, significantly reducing the risk of the tooth root fracturing.
• Aesthetics: Being translucent, they do not create a dark shadow at the gumline, making them ideal for all-ceramic crowns.

FAQ

What is a fiber post?

It is a non-metallic pin placed inside the tooth root to provide structural support for a crown.