Fracture Resistance of Extensively Compromised Anterior Teeth Restored With Fiberglass Posts and Biomimetic...

Area of Science:

• Dentistry
• Biomaterials Science
• Restorative Dentistry

Background:

• Fiber posts (PF and FG) are used for intraradicular anchorage in teeth with significant coronal structure loss.
• Limited research exists on their efficacy in anterior teeth with direct restorations as a crown alternative.

Purpose of the Study:

• To compare the fracture resistance and failure modes of endodontically treated anterior teeth.
• Evaluated restorations using fiberglass (FG) posts, polyethylene fiber (PF) posts (biomimetic technique), and direct resin composite (RC).

Main Methods:

• Forty endodontically treated central incisors were divided into four groups: intact control, RC, PF post, and FG post.
• Fracture resistance was tested under compressive load.
• Failure modes were analyzed and classified as repairable or catastrophic.

Main Results:

• The intact control group showed the highest resistance (840 N), followed by PF (740 N) and FG (700 N).
• The direct resin composite (RC) group had significantly lower resistance (480 N).
• No significant differences in failure modes were observed among the groups.

Conclusions:

• Fiberglass (FG) and polyethylene fiber (PF) posts significantly improve fracture resistance in endodontically treated anterior teeth.
• These posts lead to more repairable fractures compared to direct resin composite restorations.
• PF and FG posts present a more favorable outcome than exclusive RC restorations.