How to Cement a Fiber Post

Proper cementation of a fiber post is essential to ensure a stable, lasting restoration. Follow these detailed steps for effective cementation.

Preparing the Post

1. Clean the Post Surface: Start by cleaning the post with a cotton pellet soaked in alcohol to remove any contaminants.
2. Apply Silane Agent: Coat the post with multiple layers of a silane agent to enhance bonding, then gently air-dry to evaporate any solvents.

Bonding Procedures on the Tooth Surface

1. Protect Adjacent Teeth: Place a Mylar strip around adjacent teeth to avoid accidental contact with phosphoric acid.
2. Etching the Root Canal:
   • Apply phosphoric acid at the full depth of the root canal to ensure thorough etching and minimize air bubbles.
   • Make sure to etch all areas that will receive adhesive, cement, and composite resin for the core build-up.
3. Rinse and Dry:
   • Rinse the canal thoroughly to remove all acid remnants, using irrigation tips if needed to reach full depth.
   • Use absorbent paper points to remove excess moisture, ensuring the canal is dry but not desiccated.
     
     
     

Adhesive Application

1. Apply Dual-Cure Adhesive: Use a micro-brush to apply a dual-cure adhesive to the dental substrate, covering the entire bonding area and the post surface.
2. Volatilize Solvents: Use a gentle air jet to evaporate solvents.
3. Remove Excess Adhesive: Use absorbent paper points to remove any adhesive surplus and ensure even distribution.

Cement Application

1. Apply Dual Resin Cement:
   • Using a syringe or lentulo drills, apply the resin cement to the canal walls.
   • Apply cement to the post and insert it quickly to the full depth to avoid premature polymerization, which could hinder full seating of the post.
2. Positioning the Post: Place the post into the canal and apply digital pressure to secure it at the predetermined height.
   
   
   
3. Light Cure: Remove any unpolymerized cement, then light-cure to set the cement fully.

Core Build-Up

Once the post is cemented, construct the core build-up by incrementally adding light-cured composite or using another preferred technique. This core build-up supports the final restoration.

a video demonstration explaining the full procedure