What may be inserted to stabilize a crown or restoration?

What may be inserted to stabilize a crown or restoration?

• A. A rubber dam
• B. A dental crown
• C. A spacer
• D. A small supporting post

Answer: (D)

When a crown or other restoration needs extra retention, inserting a small supporting post provides an internal anchor. The post is placed into the root canal or prepared into the root to give a solid foundation for a core buildup, which the crown sits on. This setup helps resist dislodgement under chewing forces and distributes stress along the tooth, especially when much of the natural structure is missing. A rubber dam is used to isolate the tooth during treatment, but it doesn’t stabilize the crown. A spacer’s role isn’t to retain a crown, and a dental crown is the final restoration rather than something inserted to stabilize it.

When a crown or other restoration needs extra retention, inserting a small supporting post provides an internal anchor. The post is placed into the root canal or prepared into the root to give a solid foundation for a core buildup, which the crown sits on. This setup helps resist dislodgement under chewing forces and distributes stress along the tooth, especially when much of the natural structure is missing. A rubber dam is used to isolate the tooth during treatment, but it doesn’t stabilize the crown. A spacer’s role isn’t to retain a crown, and a dental crown is the final restoration rather than something inserted to stabilize it.