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Related Experiment Videos

Does an intracanal composite anchorage replace posts?

Gabriel Krastl1, Andres Izquierdo, Leonard Büttel

  • 1Department of Periodontology, Endodontology and Cariology, University of Basel, Switzerland, Hebelstrasse 3, CH-4056, Basel, Switzerland, gabriel.krastl@unibas.ch.

Clinical Oral Investigations
|March 19, 2013
PubMed
Summary

This study found that using only composite resin for intracanal anchorage, even at a shallower depth, offers similar fracture resistance to titanium posts. However, root cracks may still occur, potentially impacting tooth longevity.

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Area of Science:

  • Dental Materials Science
  • Restorative Dentistry
  • Endodontics

Background:

  • Conventionally cemented titanium posts and bonded glass fiber posts are common methods for restoring endodontically treated teeth.
  • Assessing alternative intracanal anchorage methods is crucial for improving restorative outcomes.

Purpose of the Study:

  • To evaluate the effectiveness of intracanal composite anchorage as a substitute for traditional post systems.
  • To compare the fracture resistance of composite-only anchorage versus titanium and glass fiber posts.

Main Methods:

  • Post space preparation in root-filled mandibular premolars to different depths (6mm and 3mm).
  • Cementation of titanium posts (Group 1), adhesive cementation of glass fiber posts (Group 2), and sole use of dual-cure composite for anchorage (Group 3).

Related Experiment Videos

  • Thermo-mechanical loading followed by static load to failure, with fracture pattern and crack analysis.

    • Main Results:

    • Glass fiber posts (Group 2) showed significantly higher fracture resistance (408 N) compared to titanium (Group 1: 290 N) and composite-only (Group 3: 234 N) groups.
    • No significant difference in fracture resistance was found between titanium posts and composite-only anchorage.
    • Composite-only anchorage (Group 3) exhibited more favorable fracture patterns, but most teeth had additional root cracks.

    Conclusions:

    • Adhesive intracanal anchorage using only resin composite (3mm depth) provides comparable fracture resistance to conventionally cemented titanium posts (6mm depth).
    • The presence of additional dentinal root cracks, even in teeth with repairable fractures, is a concern.
    • These additional cracks may compromise the long-term survival of restored teeth.