Removing Cast Posts
Ultrasonics allow you to remove cast posts in a fast, efficient and safe way.
During endodontic retreatment, the removal of a cast metal post can be a difficult procedure which carries risk of perforation and fracture of the tooth. Ultrasonic vibration breaks the bond between the post and the canal walls, facilitating its removal. There are many advantages of using ultrasonics for this procedure, including speed, conservation of tooth structure, and minimizing risk of tooth fracture.
Step-by-Step Cast Post Removal
Protocol 1
1 – Using a transmetal or diamond bur, abrade the coronary portion of the post until the cement line is visible (high speed turbine with water cooling).
2 – In case of monoblock casting, use the bur to split it in two separate posts.
3 – After the cement line is visible, use the E8 ultrasonic tip (30% power and water cooling on) to break/remove the cement around the metal post.
4 – Next, place the E12 ultrasonic tip in the most cervical portion of the post and apply vibration (80% power and water cooling on) in order to brake the cement and pull out the post.
1. Reduce the coronal portion.
2. Expose the cement line.
3. Break/remove the cement line using the E8 insert.
4. Vibrate the E12 insert at the base of the post.
Protocol 2
1 – Using a transmetal or diamond bur, abrade the coronary portion of the post until the cement line is visible (high speed turbine with water cooling).
2 – In case of monoblock casting, use the bur to split it in two separate posts.
3 – After the cement line is visible, use the E8 ultrasonic tip (30% power and water cooling on) to break/remove the cement around the metal post.
4 – Next, use the SIUS technique (Simultaneous and Integrated Ultrasonic System), placing two E12 ultrasonic tips in the most cervical portion of the post – place them opposite to each other – and applying vibration (80% power and water cooling on) in order to brake the cement and pull out the post.
1. Reduce the coronal portion.
2. Expose the cement line.
3. Break/remove the cement line using the E8 insert.
4. Vibrate both E12 inserts at the base of the post.
Upper right central with metal post visible after crown removal.
Transmetal bur used to expose the cement line.
Ultrasonic tip placed at the most coronary portion.
Final Result
Journal Articles & Research
Efficacy of Ultrasound in Removal of Intraradicular Posts Using Different Techniques.
– Journal of Oral Science, 2005
Starter Packs to get you going.
Starter Packs to get you going.
We’ve assembled three separate starter packs packaged with a procedure field guide to get you started supercharging ultrasonics in your practice.
Endo Starter Pack
The Endo Starter Pack includes 6 Ultrasonics Tips to get you started with Pulp Chamber, Middle Third and Activation procedures.
Endo Master Pack
The Endo Master Pack includes 12 Ultrasonics Tips for Pulp Chamber, Middle Third, Activation, Post Removal and Retreatment procedures.
Endo Guru Pack
The Endo Guru Pack includes 18 Ultrasonics Tips for maximum flexibility with Pulp Chamber, Middle Third, Activation,Post Removal, Apical Surgery and Retreatment procedures.
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