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Comparative Evaluation of Fracture Resistance and Failure Patterns Among All-Resin Post and Core Designs: In vitro

Mosa Altassan1, Ruwaida Z Alshali2, Osamah Abdulelah Alsulimani3

  • 1Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia.

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PubMed
Summary

Shorter all-resin posts show comparable fracture resistance to fiber posts in endodontically treated teeth. These posts offer a conservative, repairable option for dental restorations.

Keywords:
all resin postcore-X flowfiber reinforced postsfracture resistancepost and core

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Area of Science:

  • Dental Materials Science
  • Restorative Dentistry
  • Endodontics

Background:

  • Fiber-reinforced posts are commonly used for restoring endodontically treated teeth.
  • All-resin posts offer a potential alternative, but their performance requires evaluation.

Purpose of the Study:

  • To compare the fracture resistance of all-resin posts (Core-X Flow) of varying lengths with fiber-reinforced posts.
  • To analyze the failure patterns associated with these post systems.

Main Methods:

  • Thirty human single-rooted teeth were endodontically treated and divided into three groups.
  • Groups received either a 10 mm fiber post or 10 mm/5 mm all-resin posts, all with Core-X Flow.
  • Fracture resistance was tested under compression; failure modes were examined microscopically.

Main Results:

  • No significant difference in fracture resistance was found among the groups (p>0.05).
  • Mean fracture resistance values were similar across fiber posts and both lengths of all-resin posts.
  • Shorter (5 mm) all-resin posts exhibited a higher incidence of favorable, repairable fractures.

Conclusions:

  • All-resin posts demonstrate comparable fracture resistance to fiber-reinforced posts.
  • Shorter all-resin posts may provide a more conservative and clinically favorable restoration option.
  • Further in vitro research with larger sample sizes is warranted.