Restorative Case Report: Flexibility of Fibre-Posts

Area of Science:

• Restorative Dentistry
• Dental Materials Science

Background:

• Restoring anterior teeth with limited coronal tissue after root canal treatment often involves posts to support the core restoration.
• Traditionally, metal posts (cast or prefabricated) were used, but fibre-posts are now favored for their potentially better fracture resistance.
• Fibre-posts are promoted for their favorable failure mechanism, which may prevent catastrophic root fracture.

Observation:

• This case report presents a failure of a fibre-post's structural integrity in a maxillary lateral incisor.
• The failure occurred despite the theoretical advantages of fibre-posts in preventing root damage.

Findings:

• The structural integrity of the fibre-post was compromised, necessitating retreatment.
• A proposed explanation for the fibre-post failure is discussed within the report.

Implications:

• This case highlights the possibility of fibre-post failure, even when used as intended.
• Successful retreatment involved ultrasonic removal of the fractured fibre-post and subsequent restoration with a cast-post and metal-ceramic crown.
• Clinicians should be aware of potential fibre-post failures and have alternative retreatment strategies available.