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Related Experiment Videos

[New research on endodontic carbon-fiber posts]

L Rovatti1, P N Mason, A Dallari

  • 1Instituto di Clinica Odontoiatrica, Università degli Studi, Modena.

Minerva Stomatologica
|December 1, 1994
PubMed
Summary

This study highlights improved retention of fiber-carbon posts using specially designed posts with circumferential grooves. Certain composite cements, like Super Bond and All Bond II, offer superior tensile strength and dentinal tubule penetration for enhanced cement-root channel interface.

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Area of Science:

  • Dental materials science
  • Prosthodontics
  • Biomaterials engineering

Background:

  • Fiber-carbon posts are widely used in dental restorations.
  • Clinical experience and university studies support their use, focusing on mechanical resistance and retention.
  • Luting procedures are identified as a critical area for improvement in post retention.

Purpose of the Study:

  • To evaluate the retention of fiber-carbon posts.
  • To compare the effectiveness of different composite cements and post designs.
  • To identify factors influencing the cement-post and cement-root channel interface.

Main Methods:

  • Clinical experience over 4 years with fiber-carbon posts.
  • Mechanical resistance and retention testing of posts and cements.

Related Experiment Videos

  • Evaluation of luting procedures and cement-post junction integrity.
  • Testing of a novel fiber-carbon post (Composipost Retentive) with circumferential grooves.
  • Tensile strength testing of composite cements using an Instron machine.

    • Main Results:

    • Standard fiber-carbon posts showed no significant retention increase with Sealbond and Flexi-Flow cements; failure occurred at the cement-post junction.
    • The Composipost Retentive, featuring circumferential grooves, demonstrated significantly superior retention.
    • Five composite cements (Sticky Post, Flexi-Flow, Sealbond, Super Bond, All Bond II) were tested.
    • Super Bond and All Bond II exhibited high tensile strength (>120 kg) and substantial penetration into dentinal tubules.

    Conclusions:

    • Luting procedures are a critical factor influencing fiber-carbon post retention.
    • The Composipost Retentive design with circumferential grooves markedly enhances post retention.
    • Composite cements like Super Bond and All Bond II provide excellent retention and interface bonding due to their penetration into dentinal tubules.