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Related Experiment Videos

Tensile adhesion evaluation in a new universal test.

M Staninec1, Y Torii, L G Watanabe

  • 1Department of Restorative Dentistry, UCSF School of Dentistry 94143.

American Journal of Dentistry
|August 1, 1992
PubMed
Summary

A new tensile testing jig effectively measured dental material adhesion to dentin. Photobond demonstrated the highest adhesion to enamel, while other materials showed varying bond strengths to dentin.

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Adhesion Science

Background:

  • Dental restorative materials require strong adhesion to tooth structures for longevity.
  • Evaluating the bond strength of various restorative materials to dentin is crucial for clinical success.

Purpose of the Study:

  • To design and validate a tensile testing jig for assessing dental material adhesion.
  • To compare the adhesion of different types of direct and indirect restorative materials to dentin.

Main Methods:

  • A novel tensile testing jig was developed to measure bond strength.
  • Various flowable and condensable, light-cured and chemically-cured restorative materials were tested.
  • Bond strength to dentin was evaluated in tension after 24 hours.

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Main Results:

  • Photobond demonstrated the highest adhesion (15.84 MPa) to enamel.
  • Superbond C&B to metal inlay (6.20 MPa) and amalgam (5.76 MPa) showed comparable, moderate bond strengths.
  • Vitrebond (2.06 MPa) and Ketac-Bond (0.73 MPa) exhibited lower adhesion to dentin.

Conclusions:

  • The developed tensile testing jig is a useful method for evaluating dental material adhesion.
  • Adhesion strength varies significantly among different restorative materials and substrates.
  • Further research can utilize this jig to optimize material formulations and application techniques.